void pulsesequence()
{
double pwx;
char rcvrsflag[MAXSTR];
pwx = getval("pwx");
getstr("rcvrs",rcvrsflag);
/* check decoupling modes */
if ( (dm[C] == 'y') || (dm[D] == 'y') || (h**o[0] == 'y') )
{
printf("dm[C], dm[D] should be set to 'n' and/or h**o should set to 'n'");
psg_abort(1);
}
if (strcmp(rcvrsflag,"yy"))
printf("rcvrs parameter should be set to 'yy'\n");
settable(t1,4,ph1);
getelem(t1,ct,v1);
assign(v1,oph);
settable(t2,4,ph2);
status(A);
obspower(tpwr);
decpower(dpwr);
delay(d1);
status(B);
delay(d2);
rgpulse(pw, t2, rof1, rof2);
status(C);
setactivercvrs("yn");
startacq(alfa);
acquire(np,1.0/sw);
endacq();
status(B);
delay(d2);
decrgpulse(pwx, t2, rof1, rof2);
status(D);
setactivercvrs("ny");
startacq(alfa);
acquire(np,1.0/sw);
endacq();
}
pulsesequence() {
// Define Variables and Objects and Get Parameter Values
MPSEQ dec = getblew("blewH",0,0.0,0.0,0,1);
strncpy(dec.ch,"dec",3);
putCmd("chHblew='dec'\n");
CP hx = getcp("HX",0.0,0.0,0,1);
strncpy(hx.fr,"dec",3);
strncpy(hx.to,"obs",3);
putCmd("frHX='dec'\n");
putCmd("toHX='obs'\n");
//--------------------------------------
// Copy Current Parameters to Processed
//-------------------------------------
putCmd("groupcopy('current','processed','acquisition')");
// Dutycycle Protection
DUTY d = init_dutycycle();
d.dutyon = getval("pwH90") + getval("tHX") + getval("rd") + getval("ad") + at;
d.dutyoff = d1 + 4.0e-6;
d = update_dutycycle(d);
abort_dutycycle(d,10.0);
// Set Phase Tables
settable(phH90,4,table1);
settable(phXhx,4,table2);
settable(phHhx,4,table3);
settable(phRec,4,table4);
setreceiver(phRec);
// Begin Sequence
txphase(phXhx); decphase(phH90);
obspwrf(getval("aXhx")); decpwrf(getval("aH90"));
obsunblank(); decunblank(); _unblank34();
delay(d1);
sp1on(); delay(2.0e-6); sp1off(); delay(2.0e-6);
// H to X Cross Polarization
decrgpulse(getval("pwH90"),phH90,0.0,0.0);
decphase(phHhx);
_cp_(hx,phHhx,phXhx);
// Begin Acquisition
_mpseqon(dec, phHhx);
obsblank(); _blank34();
delay(getval("rd"));
startacq(getval("ad"));
acquire(np, 1/sw);
endacq();
_mpseqoff(dec);
obsunblank(); decunblank(); _unblank34();
}
void pulsesequence()
{
double tro;
char gread,gphase,gslice;
char grdname[MAXSTR];
gread = 'z';
if (getorientation(&gread,&gphase,&gslice,"orient") < 0)
abort_message("illegal value in orient parameter");
gro = getval("gro");
tro = getval("tro");
getstr("gname",grdname);
/* equilibrium period */
status(A);
hsdelay(d1);
/* --- tau delay --- */
status(B);
pulse(p1, zero);
hsdelay(d2);
/* --- observe period --- */
status(C);
pulse(pw,oph);
delay(0.0001);
shapedgradient(grdname,tro,gro,gread,1,1);
hsdelay(d2);
startacq(alfa);
acquire(np,1.0/sw);
endacq();
}
pulsesequence()
{
double pd, seqtime;
initparms_sis(); /* initialize standard imaging parameters */
seqtime = at+pw+rof1+rof2;
pd = tr - seqtime; /* predelay based on tr */
if (pd <= 0.0) {
abort_message("%s: Requested tr too short. Min tr = %f ms",seqfil,seqtime*1e3);
}
status(A);
delay(pd);
xgate(ticks);
/* --- observe period --- */
obspower(tpwr);
shapedpulse(pwpat,pw,oph,rof1,rof2);
startacq(alfa);
acquire(np,1.0/sw);
endacq();
}
void pulsesequence() {
// Define Variables and Objects and Get Parameter Values
DSEQ dec = getdseq("H");
strncpy(dec.t.ch,"dec",3);
putCmd("chHtppm='dec'\n");
strncpy(dec.s.ch,"dec",3);
putCmd("chHspinal='dec'\n");
//--------------------------------------
// Copy Current Parameters to Processed
//-------------------------------------
putCmd("groupcopy('current','processed','acquisition')");
// Dutycycle Protection
DUTY d = init_dutycycle();
d.dutyon = getval("pwX90");
d.dutyoff = d1 + 4.0e-6;
d.c1 = d.c1 + (!strcmp(dec.seq,"tppm"));
d.c1 = d.c1 + ((!strcmp(dec.seq,"tppm")) && (dec.t.a > 0.0));
d.t1 = getval("rd") + getval("ad") + at;
d.c2 = d.c2 + (!strcmp(dec.seq,"spinal"));
d.c2 = d.c2 + ((!strcmp(dec.seq,"spinal")) && (dec.s.a > 0.0));
d.t2 = getval("rd") + getval("ad") + at;
d = update_dutycycle(d);
abort_dutycycle(d,10.0);
// Set Phase Tables
settable(phX90,4,table1);
settable(phRec,4,table2);
setreceiver(phRec);
// Begin Sequence
txphase(phX90); decphase(zero);
obspwrf(getval("aX90"));
obsunblank(); decunblank(); _unblank34();
delay(d1);
sp1on(); delay(2.0e-6); sp1off(); delay(2.0e-6);
// X Direct Polarization
rgpulse(getval("pwX90"),phX90,0.0,0.0);
// Begin Acquisition
_dseqon(dec);
obsblank(); _blank34();
delay(getval("rd"));
startacq(getval("ad"));
acquire(np, 1/sw);
endacq();
_dseqoff(dec);
obsunblank(); decunblank(); _unblank34();
}
void pulsesequence()
{
double pd, seqtime;
double n,r,bigtau;
double restol, resto_local;
init_mri();
restol=getval("restol"); //local frequency offset
roff=getval("roff"); //receiver offset
init_rf(&p1_rf,p1pat,p1,flip1,rof1,rof2); /* hard pulse */
calc_rf(&p1_rf,"tpwr1","tpwr1f");
init_rf(&p2_rf,p2pat,p2,flip2,rof1,rof2); /* hard pulse */
calc_rf(&p2_rf,"tpwr2","tpwr2f");
/* calculate 'big tau' values */
bigtau = getval("bigtau");
n = bigtau/(2.0*d2);
n = (double)((int)((n/2.0) + 0.5)) * 2.0;
initval(n,v3);
seqtime = at+p1+rof1+rof2;
seqtime += 2*d2+p2+rof1+rof2; /* cpmg pulse and delay */
pd = tr - seqtime; /* predelay based on tr */
if (pd <= 0.0) {
abort_message("%s: Requested tr too short. Min tr = %f ms",seqfil,seqtime*1e3);
}
resto_local=resto-restol;
status(A);
delay(pd);
xgate(ticks);
/* calculate exact delay and phases */
r = d2-p2/2.0-rof2; /* correct delay for pulse width */
mod2(oph,v2); /* 0,1,0,1 */
incr(v2); /* 1,2,1,2 = y,y,-y,-y */
obsoffset(resto_local);
obspower(p1_rf.powerCoarse);
obspwrf(p1_rf.powerFine);
rgpulse(p1,oph,rof1,rof2); /* 90deg */
obspower(p2_rf.powerCoarse);
obspwrf(p2_rf.powerFine);
starthardloop(v3);
delay(r);
rgpulse(p2,v2,rof1,rof2); /* 180deg pulse */
delay(r);
endhardloop();
startacq(alfa);
acquire(np,1.0/sw);
endacq();
}
pulsesequence()
{
double pd, seqtime;
double minte,ted1,ted2;
double restol, resto_local;
int vph180 = v2; /* Phase of 180 pulse */
init_mri(); /****needed ****/
restol=getval("restol"); //local frequency offset
roff=getval("roff"); //receiver offset
init_rf(&p1_rf,p1pat,p1,flip1,rof1,rof2); /* hard pulse */
calc_rf(&p1_rf,"tpwr1","tpwr1f");
init_rf(&p2_rf,p2pat,p2,flip2,rof1,rof2); /* hard pulse */
calc_rf(&p2_rf,"tpwr2","tpwr2f");
seqtime = at+(p1/2.0)+rof1+d2;
pd = tr - seqtime; /* predelay based on tr */
if (pd <= 0.0) {
abort_message("%s: Requested tr too short. Min tr = %f ms",seqfil,seqtime*1e3);
}
minte = p1/2.0 + p2 + 2*rof2 + rof1;
if(d2 > 0) {
if(d2 < minte+4e-6)
abort_message("%s: TE too short. Min te = %f ms",seqfil,minte*1e3);
}
ted1 = d2/2 - p1/2 - p2/2 + rof2 + rof1;
ted2 = d2/2 - p2/2 + rof2;
resto_local=resto-restol;
status(A);
xgate(ticks);
delay(pd);
/* --- observe period --- */
obsoffset(resto_local);
obspower(p1_rf.powerCoarse);
obspwrf(p1_rf.powerFine);
shapedpulse(p1pat,p1,oph,rof1,rof2);
/* if d2=0 no 180 pulse applied */
if (d2 > 0) {
obspower(p2_rf.powerCoarse);
obspwrf(p2_rf.powerFine);
settable(t2,2,ph180); /* initialize phase tables and variables */
getelem(t2,ct,v6); /* 180 deg pulse phase alternates +/- 90 off the rcvr */
add(oph,v6,vph180); /* oph=zero */
delay(ted1);
shapedpulse(p2pat,p2,vph180,rof1,rof2);
delay(ted2);
}
startacq(alfa);
acquire(np,1.0/sw);
endacq();
}
pulsesequence()
{
double sign,currentlimit,RMScurrentlimit,dutycycle;
int calcpower;
/* Initialize paramaters **********************************/
init_mri();
calcpower=(int)getval("calcpower");
dutycycle=getval("dutycycle");
currentlimit=getval("currentlimit");
RMScurrentlimit=getval("RMScurrentlimit");
if (gspoil>0.0) sign = 1.0;
else sign = -1.0;
init_rf(&p1_rf,p1pat,p1,flip1,rof1,rof2);
if (calcpower) calc_rf(&p1_rf,"tpwr1","tpwr1f");
if (tspoil>0.0) {
gspoil = sqrt(dutycycle/100.0)*gmax*RMScurrentlimit/currentlimit;
init_generic(&spoil_grad,"spoil",gspoil,tspoil);
spoil_grad.rollOut=FALSE;
calc_generic(&spoil_grad,WRITE,"gspoil","tspoil");
}
xgate(ticks);
rotate();
status(A);
mod4(ct,oph);
delay(d1);
/* TTL scope trigger **********************************/
sp1on(); delay(4e-6); sp1off();
if (calcpower) {
obspower(p1_rf.powerCoarse);
obspwrf(p1_rf.powerFine);
}
else obspower(tpwr1);
delay(4e-6);
if (tspoil>0.0) {
obl_shapedgradient(spoil_grad.name,spoil_grad.duration,0,0,spoil_grad.amp*sign,WAIT);
delay(d2);
}
shapedpulse(p1pat,p1,ct,rof1,rof2);
startacq(alfa);
acquire(np,1.0/sw);
endacq();
}
pulsesequence() {
// Define Variables and Objects and Get Parameter Values
initval(getval("periods"),v2);
//--------------------------------------
// Copy Current Parameters to Processed
//-------------------------------------
putCmd("groupcopy('current','processed','acquisition')");
// Set Phase Tables
settable(phX90,4,table1);
settable(phRec,4,table2);
setreceiver(phRec);
// Begin Sequence
txphase(phX90); decphase(zero);
obspwrf(getval("aX90"));
obsunblank(); decunblank(); _unblank34();
delay(d1);
xgate(1.0);
sp1on(); delay(2.0e-6); sp1off(); delay(2.0e-6);
// Apply a Rotorsync Delay
rgpulse(getval("pwX90"),phX90,0.0,0.0);
rotorsync(v2);
rgpulse(getval("pwX90"),phX90,0.0,0.0);
xgate(getval("xperiods"));
rgpulse(getval("pwX90"),phX90,0.0,0.0);
delay(10.0e-6);
// X Direct Polarization
rgpulse(getval("pwX90"),phX90,0.0,0.0);
// Begin Acquisition
obsblank(); _blank34();
delay(getval("rd"));
startacq(getval("ad"));
acquire(np, 1/sw);
endacq();
obsunblank(); decunblank(); _unblank34();
}
pulsesequence() {
// Define Variables and Objects and Get Parameter Values
double pw1Xstmas = getval("pw1Xstmas");
double pw2Xstmas = getval("pw2Xstmas");
double tXzfselinit = getval("tXzfsel");
double tXzfsel = tXzfselinit - 3.0e-6;
if (tXzfsel < 0.0) tXzfsel = 0.0;
double d2init = getval("d2");
double d2 = d2init - pw1Xstmas/2.0 - pw2Xstmas/2.0;
if (d2 < 0.0) d2 = 0.0;
DSEQ dec = getdseq("H");
strncpy(dec.t.ch,"dec",3);
putCmd("chHtppm='dec'\n");
strncpy(dec.s.ch,"dec",3);
putCmd("chHspinal='dec'\n");
// Set Constant-time Period for d2.
if (d2_index == 0) d2_init = getval("d2");
double d2_ = (ni - 1)/sw1 + d2_init;
putCmd("d2acqret = %f\n",roundoff(d2_,12.5e-9));
putCmd("d2dwret = %f\n",roundoff(1.0/sw1,12.5e-9));
//--------------------------------------
// Copy Current Parameters to Processed
//-------------------------------------
putCmd("groupcopy('current','processed','acquisition')");
// Dutycycle Protection
DUTY d = init_dutycycle();
d.dutyon = getval("pw1Xstmas") + getval("pw2Xstmas") + getval("pwXzfsel");
d.dutyoff = d1 + 4.0e-6;
d.c1 = d.c1 + (!strcmp(dec.seq,"tppm"));
d.c1 = d.c1 + ((!strcmp(dec.seq,"tppm")) && (dec.t.a > 0.0));
d.t1 = d2_ + tXzfsel + getval("rd") + getval("ad") + at;
d.c2 = d.c2 + (!strcmp(dec.seq,"spinal"));
d.c2 = d.c2 + ((!strcmp(dec.seq,"spinal")) && (dec.s.a > 0.0));
d.t2 = d2_ + tXzfsel + getval("rd") + getval("ad") + at;
d = update_dutycycle(d);
abort_dutycycle(d,10.0);
// Set Phase Tables
settable(ph1Xstmas,4,table1);
settable(ph2Xstmas,4,table2);
settable(phXzfsel,8,table3);
settable(phRec,8,table4);
if (phase1 == 2) {
tsadd(ph1Xstmas,1,4);
}
setreceiver(phRec);
// Begin Sequence
txphase(ph1Xstmas); decphase(zero);
obspower(getval("tpwr"));
obspwrf(getval("aXstmas"));
obsunblank(); decunblank(); _unblank34();
delay(d1);
sp1on(); delay(2.0e-6); sp1off(); delay(2.0e-6);
// H Decoupler on Before STMAS
_dseqon(dec);
// Two-Pulse STMAS
rgpulse(getval("pw1Xstmas"),ph1Xstmas,0.0,0.0);
txphase(ph2Xstmas);
delay(d2);
rgpulse(getval("pw2Xstmas"),ph2Xstmas,0.0,0.0);
// Z-filter Pulse
txphase(phXzfsel);
obsblank();
obspower(getval("dbXzfsel"));
obspwrf(getval("aXzfsel"));
delay(3.0e-6);
obsunblank();
delay(tXzfsel);
rgpulse(getval("pwXzfsel"),phXzfsel,0.0,0.0);
// Begin Acquisition
obsblank(); _blank34();
delay(getval("rd"));
startacq(getval("ad"));
acquire(np, 1/sw);
endacq();
_dseqoff(dec);
obsunblank(); decunblank(); _unblank34();
}
void pulsesequence()
{
/* DECLARE AND LOAD VARIABLES */
char f1180[MAXSTR], /* Flag to start t1 @ halfdwell */
mag_flg[MAXSTR], /*magic angle gradient*/
f2180[MAXSTR], /* Flag to start t2 @ halfdwell */
stCdec[MAXSTR], /* calls STUD+ waveforms from shapelib */
STUD[MAXSTR]; /* apply automatically calculated STUD decoupling */
int icosel1, /* used to get n and p type */
icosel2,
t1_counter, /* used for states tppi in t1 */
t2_counter, /* used for states tppi in t2 */
ni2 = getval("ni2");
double tau1, /* t1 delay */
tau2, /* t2 delay */
del = getval("del"), /* time delays for CH coupling evolution */
BPdpwrspinlock, /* user-defined upper limit for spinlock(Hz) */
BPpwrlimits, /* =0 for no limit, =1 for limit */
del1 = getval("del1"),
del2 = getval("del2"),
/* STUD+ waveforms automatically calculated by macro "biocal" */
/* and string parameter stCdec calls them from your shapelib. */
stdmf, /* dmf for STUD decoupling */
studlvl, /* coarse power for STUD+ decoupling */
rf80 = getval("rf80"), /* rf in Hz for 80ppm STUD+ */
bw, ofs, ppm, /* temporary Pbox parameters */
pwClvl = getval("pwClvl"), /* coarse power for C13 pulse */
pwC = getval("pwC"), /* C13 90 degree pulse length at pwClvl */
rf0, /* maximum fine power when using pwC pulses */
/* p_d is used to calculate the isotropic mixing on the Cab region */
spinlock = getval("spinlock"), /* DIPSI-3 spinlock field strength in Hz */
p_d, /* 50 degree pulse for DIPSI-2 at rfd */
rfd, /* fine power for 7 kHz rf for 500MHz magnet */
ncyc = getval("ncyc"), /* no. of cycles of DIPSI-3 */
/* the following pulse lengths for SLP pulses are automatically calculated */
/* by the macro "ghcch_tocsy" . SLP pulse shapes, "offC10" etc are called */
/* directly from your shapelib. */
pwC10, /* 180 degree selective sinc pulse on CO(174ppm) */
pwZ, /* the largest of pwC10 and 2.0*pwN */
rf10, /* fine power for the pwC10 ("offC10") pulse */
compC = getval("compC"), /* adjustment for C13 amplifier compression */
pwNlvl = getval("pwNlvl"), /* power for N15 pulses */
pwN = getval("pwN"), /* N15 90 degree pulse length at pwNlvl */
sw1 = getval("sw1"),
sw2 = getval("sw2"),
gt1 = getval("gt1"), /* coherence pathway gradients */
gzcal = getval("gzcal"), /* G/cm to DAC coversion factor*/
gzlvl1 = getval("gzlvl1"),
gzlvl2 = getval("gzlvl2"),
gt3 = getval("gt3"), /* other gradients */
gt5 = getval("gt5"),
gzlvl3 = getval("gzlvl3"),
gzlvl4 = getval("gzlvl4"),
gzlvl5 = getval("gzlvl5"),
gzlvl6 = getval("gzlvl6");
getstr("STUD",STUD);
getstr("mag_flg",mag_flg);
getstr("f1180",f1180);
getstr("f2180",f2180);
strcpy(stCdec, "stCdec80");
stdmf = getval("dmf80");
studlvl = pwClvl + 20.0*log10(compC*pwC*4.0*rf80);
studlvl = (int) (studlvl + 0.5);
P_getreal(GLOBAL,"BPpwrlimits",&BPpwrlimits,1);
P_getreal(GLOBAL,"BPdpwrspinlock",&BPdpwrspinlock,1);
/* LOAD PHASE TABLE */
settable(t3,2,phi3);
settable(t6,1,phi6);
settable(t5,4,phi5);
settable(t10,1,phi10);
settable(t11,4,rec);
/* INITIALIZE VARIABLES */
if (BPpwrlimits > 0.5)
{
if (spinlock > BPdpwrspinlock)
{
spinlock = BPdpwrspinlock;
printf("spinlock too large, reset to user-defined limit (BPdpwrspinlock)");
psg_abort(1);
}
}
if( dpwrf < 4095 )
{ printf("reset dpwrf=4095 and recalibrate C13 90 degree pulse");
psg_abort(1); }
/* maximum fine power for pwC pulses */
rf0 = 4095.0;
setautocal(); /* activate auto-calibration flags */
if (autocal[0] == 'n')
{
/* "offC10": 180 degree one-lobe sinc pulse on CO, null at Ca 139ppm away */
pwC10 = getval("pwC10");
rf10 = (compC*4095.0*pwC*2.0*1.65)/pwC10; /* needs 1.65 times more */
rf10 = (int) (rf10 + 0.5); /* power than a square pulse */
if( pwC > (24.0e-6*600.0/sfrq) )
{ printf("Increase pwClvl so that pwC < 24*600/sfrq");
psg_abort(1);
}
}
else /* if autocal = 'y'(yes), 'q'(quiet), r(read), or 's'(semi) */
{
if(FIRST_FID) /* call Pbox */
{
ppm = getval("dfrq");
bw = 118.0*ppm; ofs = 139.0*ppm;
offC10 = pbox_make("offC10", "sinc180n", bw, ofs, compC*pwC, pwClvl);
if(dm3[B] == 'y') H2ofs = 3.2;
ofs_check(H1ofs, C13ofs, N15ofs, H2ofs);
}
rf10 = offC10.pwrf; pwC10 = offC10.pw;
}
/* dipsi-3 decoupling on CbCa */
p_d = (5.0)/(9.0*4.0*spinlock); /* DIPSI-3 Field Strength */
rfd = (compC*4095.0*pwC*5.0)/(p_d*9.0);
rfd = (int) (rfd + 0.5);
ncyc = (int) (ncyc + 0.5);
/* CHECK VALIDITY OF PARAMETER RANGES */
if( gt1 > 0.5*del - 1.0e-4)
{
printf(" gt1 is too big. Make gt1 less than %f.\n", (0.5*del - 1.0e-4));
psg_abort(1);
}
if( dm[A] == 'y' )
{
printf("incorrect dec1 decoupler flag! Should be 'nny' or 'nnn' ");
psg_abort(1);
}
if((dm2[A] == 'y' || dm2[C] == 'y'))
{
printf("incorrect dec2 decoupler flags! Should be 'nnn' ");
psg_abort(1);
}
if((dm3[A] == 'y' || dm3[C] == 'y'))
{
printf("incorrect dec3 decoupler flags! Should be 'nnn' or 'nyn' ");
psg_abort(1);
}
if( dpwr > 52 )
{
printf("don't fry the probe, DPWR too large! ");
psg_abort(1);
}
if( pw > 50.0e-6 )
{
printf("dont fry the probe, pw too high ! ");
psg_abort(1);
}
if( pwN > 100.0e-6 )
{
printf("dont fry the probe, pwN too high ! ");
psg_abort(1);
}
/* PHASES AND INCREMENTED TIMES */
/* Phase incrementation for hypercomplex 2D data, States-Haberkorn element */
icosel1 = -1; icosel2 = -1;
if (phase1 == 2)
{ tsadd(t6,2,4); icosel1 = -1*icosel1; }
if (phase2 == 2)
{ tsadd(t10,2,4); icosel2 = -1*icosel2; tsadd(t6,2,4); }
/* Set up f1180 */
tau1 = d2;
if((f1180[A] == 'y') && (ni > 1.0))
{ tau1 += ( 1.0 / (2.0*sw1) ); if(tau1 < 0.2e-6) tau1 = 0.0; }
tau1 = tau1/2.0;
/* Set up f2180 */
tau2 = d3;
if((f2180[A] == 'y') && (ni2 > 1.0))
{ tau2 += ( 1.0 / (2.0*sw2) ); if(tau2 < 0.2e-6) tau2 = 0.0; }
tau2 = tau2/2.0;
/* Calculate modifications to phases for States-TPPI acquisition */
if( ix == 1) d2_init = d2;
t1_counter = (int) ( (d2-d2_init)*sw1 + 0.5 );
if(t1_counter % 2)
{ tsadd(t3,2,4); tsadd(t11,2,4); }
if( ix == 1) d3_init = d3;
t2_counter = (int) ( (d3-d3_init)*sw2 + 0.5 );
if(t2_counter % 2)
{ tsadd(t5,2,4); tsadd(t11,2,4); }
/* BEGIN PULSE SEQUENCE */
status(A);
if ( dm3[B] == 'y' )
lk_sample();
if ((ni/sw1-d2)>0)
delay(ni/sw1-d2); /*decreases as t1 increases for const.heating*/
if ((ni2/sw2-d3)>0)
delay(ni2/sw2-d3); /*decreases as t2 increases for const.heating*/
delay(d1);
if ( dm3[B] == 'y' )
{ lk_hold(); lk_sampling_off();} /*freezes z0 correction, stops lock pulsing*/
rcvroff();
obspower(tpwr);
decpower(pwClvl);
dec2power(pwNlvl);
decpwrf(rf0);
obsoffset(tof);
txphase(t3);
delay(1.0e-5);
decrgpulse(pwC, zero, 0.0, 0.0); /*destroy C13 magnetization*/
zgradpulse(gzlvl1, 0.5e-3);
delay(1.0e-4);
decrgpulse(pwC, one, 0.0, 0.0);
zgradpulse(0.7*gzlvl1, 0.5e-3);
delay(5.0e-4);
if ( dm3[B] == 'y' ) /* begins optional 2H decoupling */
{
dec3rgpulse(1/dmf3,one,10.0e-6,2.0e-6);
dec3unblank();
dec3phase(zero);
delay(2.0e-6);
setstatus(DEC3ch, TRUE, 'w', FALSE, dmf3);
}
rgpulse(pw, t3, 0.0, 0.0); /* 1H pulse excitation */
decphase(zero);
delay(0.5*del + tau1 - 2.0*pwC);
decrgpulse(2.0*pwC, zero, 0.0, 0.0);
txphase(zero);
delay(tau1);
rgpulse(2.0*pw, zero, 0.0, 0.0);
if (mag_flg[A] == 'y')
{
magradpulse(icosel1*gzcal*gzlvl1,0.1*gt1);
}
else
{
zgradpulse(icosel1*gzlvl1, 0.1*gt1);
}
decphase(t5);
delay(0.5*del - 0.1*gt1);
simpulse(pw, pwC, zero, t5, 0.0, 0.0);
zgradpulse(gzlvl3, gt3);
decphase(zero);
delay(0.5*del2 - gt3);
simpulse(2.0*pw, 2.0*pwC, zero, zero, 0.0, 0.0);
zgradpulse(gzlvl3, gt3);
txphase(t6);
decphase(one);
delay(0.5*del2 - gt3);
simpulse(pw, pwC, t6, one, 0.0, 0.0);
zgradpulse(gzlvl4, gt3);
txphase(zero);
decphase(zero);
delay(0.5*del1 - gt3);
simpulse(2.0*pw, 2.0*pwC, zero, zero, 0.0, 0.0);
zgradpulse(gzlvl4, gt3);
delay(0.5*del1 - gt3);
decrgpulse(pwC, zero, 0.0, 0.0);
decpwrf(rfd);
delay(2.0e-6);
initval(ncyc, v2);
starthardloop(v2);
decrgpulse(4.9*p_d,zero,0.0,0.0);
decrgpulse(7.9*p_d,two,0.0,0.0);
decrgpulse(5.0*p_d,zero,0.0,0.0);
decrgpulse(5.5*p_d,two,0.0,0.0);
decrgpulse(0.6*p_d,zero,0.0,0.0);
decrgpulse(4.6*p_d,two,0.0,0.0);
decrgpulse(7.2*p_d,zero,0.0,0.0);
decrgpulse(4.9*p_d,two,0.0,0.0);
decrgpulse(7.4*p_d,zero,0.0,0.0);
decrgpulse(6.8*p_d,two,0.0,0.0);
decrgpulse(7.0*p_d,zero,0.0,0.0);
decrgpulse(5.2*p_d,two,0.0,0.0);
decrgpulse(5.4*p_d,zero,0.0,0.0);
decrgpulse(0.6*p_d,two,0.0,0.0);
decrgpulse(4.5*p_d,zero,0.0,0.0);
decrgpulse(7.3*p_d,two,0.0,0.0);
decrgpulse(5.1*p_d,zero,0.0,0.0);
decrgpulse(7.9*p_d,two,0.0,0.0);
decrgpulse(4.9*p_d,two,0.0,0.0);
decrgpulse(7.9*p_d,zero,0.0,0.0);
decrgpulse(5.0*p_d,two,0.0,0.0);
decrgpulse(5.5*p_d,zero,0.0,0.0);
decrgpulse(0.6*p_d,two,0.0,0.0);
decrgpulse(4.6*p_d,zero,0.0,0.0);
decrgpulse(7.2*p_d,two,0.0,0.0);
decrgpulse(4.9*p_d,zero,0.0,0.0);
decrgpulse(7.4*p_d,two,0.0,0.0);
decrgpulse(6.8*p_d,zero,0.0,0.0);
decrgpulse(7.0*p_d,two,0.0,0.0);
decrgpulse(5.2*p_d,zero,0.0,0.0);
decrgpulse(5.4*p_d,two,0.0,0.0);
decrgpulse(0.6*p_d,zero,0.0,0.0);
decrgpulse(4.5*p_d,two,0.0,0.0);
decrgpulse(7.3*p_d,zero,0.0,0.0);
decrgpulse(5.1*p_d,two,0.0,0.0);
decrgpulse(7.9*p_d,zero,0.0,0.0);
decrgpulse(4.9*p_d,two,0.0,0.0);
decrgpulse(7.9*p_d,zero,0.0,0.0);
decrgpulse(5.0*p_d,two,0.0,0.0);
decrgpulse(5.5*p_d,zero,0.0,0.0);
decrgpulse(0.6*p_d,two,0.0,0.0);
decrgpulse(4.6*p_d,zero,0.0,0.0);
decrgpulse(7.2*p_d,two,0.0,0.0);
decrgpulse(4.9*p_d,zero,0.0,0.0);
decrgpulse(7.4*p_d,two,0.0,0.0);
decrgpulse(6.8*p_d,zero,0.0,0.0);
decrgpulse(7.0*p_d,two,0.0,0.0);
decrgpulse(5.2*p_d,zero,0.0,0.0);
decrgpulse(5.4*p_d,two,0.0,0.0);
decrgpulse(0.6*p_d,zero,0.0,0.0);
decrgpulse(4.5*p_d,two,0.0,0.0);
decrgpulse(7.3*p_d,zero,0.0,0.0);
decrgpulse(5.1*p_d,two,0.0,0.0);
decrgpulse(7.9*p_d,zero,0.0,0.0);
decrgpulse(4.9*p_d,zero,0.0,0.0);
decrgpulse(7.9*p_d,two,0.0,0.0);
decrgpulse(5.0*p_d,zero,0.0,0.0);
decrgpulse(5.5*p_d,two,0.0,0.0);
decrgpulse(0.6*p_d,zero,0.0,0.0);
decrgpulse(4.6*p_d,two,0.0,0.0);
decrgpulse(7.2*p_d,zero,0.0,0.0);
decrgpulse(4.9*p_d,two,0.0,0.0);
decrgpulse(7.4*p_d,zero,0.0,0.0);
decrgpulse(6.8*p_d,two,0.0,0.0);
decrgpulse(7.0*p_d,zero,0.0,0.0);
decrgpulse(5.2*p_d,two,0.0,0.0);
decrgpulse(5.4*p_d,zero,0.0,0.0);
decrgpulse(0.6*p_d,two,0.0,0.0);
decrgpulse(4.5*p_d,zero,0.0,0.0);
decrgpulse(7.3*p_d,two,0.0,0.0);
decrgpulse(5.1*p_d,zero,0.0,0.0);
decrgpulse(7.9*p_d,two,0.0,0.0);
endhardloop();
dec2phase(zero);
decphase(zero);
txphase(zero);
decpwrf(rf10);
delay(tau2);
/* WFG3_START_DELAY */
sim3shaped_pulse("", "offC10", "", 2.0*pw, pwC10, 2.0*pwN, zero, zero, zero, 0.0, 0.0);
if(pwC10>2.0*pwN) pwZ=0.0; else pwZ=2.0*pwN - pwC10;
delay(tau2);
decpwrf(rf0);
if (mag_flg[A] == 'y')
{
magradpulse(-icosel2*gzcal*gzlvl2, 1.8*gt1);
}
else
{
zgradpulse(-icosel2*gzlvl2, 1.8*gt1);
}
delay(2.02e-4);
decrgpulse(2.0*pwC, zero, 0.0, 0.0);
decpwrf(rf10);
if (mag_flg[A] == 'y')
{
magradpulse(icosel2*gzcal*gzlvl2, 1.8*gt1);
}
else
{
zgradpulse(icosel2*gzlvl2, 1.8*gt1);
}
delay(2.0e-4 + WFG3_START_DELAY + pwZ);
decshaped_pulse("offC10", pwC10, zero, 0.0, 0.0);
decpwrf(rf0);
decrgpulse(pwC, zero, 2.0e-6, 0.0);
zgradpulse(gzlvl5, gt5);
delay(0.5*del1 - gt5);
simpulse(2.0*pw, 2.0*pwC, zero, zero, 0.0, 0.0);
zgradpulse(gzlvl5, gt5);
txphase(one);
decphase(t10);
delay(0.5*del1 - gt5);
simpulse(pw, pwC, one, t10, 0.0, 0.0);
zgradpulse(gzlvl6, gt5);
txphase(zero);
decphase(zero);
delay(0.5*del2 - gt5);
simpulse(2.0*pw, 2.0*pwC, zero, zero, 0.0, 0.0);
zgradpulse(gzlvl6, gt5);
delay(0.5*del2 - gt5);
simpulse(pw, pwC, zero, zero, 0.0, 0.0);
delay(0.5*del - 0.5*pwC);
simpulse(2.0*pw,2.0*pwC, zero, zero, 0.0, 0.0);
if (mag_flg[A] == 'y')
magradpulse(gzcal*gzlvl1, gt1);
else
zgradpulse(gzlvl1, gt1);
rcvron();
if ((STUD[A]=='n') && (dm[C] == 'y'))
decpower(dpwr);
if ( dm3[B] == 'y' ) /* turns off 2H decoupling */
{
delay(0.5*del-40.0e-6 -gt1 -1/dmf3);
setstatus(DEC3ch, FALSE, 'c', FALSE, dmf3);
dec3rgpulse(1/dmf3,three,2.0e-6,2.0e-6);
dec3blank();
lk_autotrig(); /* resumes lock pulsing */
lk_sample();
if (mag_flg[A] == 'y')
statusdelay(C,40.0e-6 - 2.0*VAGRADIENT_DELAY - POWER_DELAY);
else
statusdelay(C,40.0e-6 - 2.0*GRADIENT_DELAY - POWER_DELAY);
}
else
{
delay(0.5*del-40.0e-6 -gt1);
if (mag_flg[A] == 'y')
statusdelay(C,40.0e-6 - 2.0*VAGRADIENT_DELAY - POWER_DELAY);
else
statusdelay(C,40.0e-6 - 2.0*GRADIENT_DELAY - POWER_DELAY);
}
if ((STUD[A]=='y') && (dm[C] == 'y'))
{decpower(studlvl);
decunblank();
decon();
decprgon(stCdec,1/stdmf, 1.0);
startacq(alfa);
acquire(np, 1.0/sw);
decprgoff();
decoff();
decblank();
}
setreceiver(t11);
}
pulsesequence()
{
double pd, seqtime;
double mintDELTA,ted1,ted2,gf;
double restol, resto_local;
init_mri(); /****needed ****/
restol=getval("restol"); //local frequency offset
roff=getval("roff"); //receiver offset
init_rf(&p1_rf,p1pat,p1,flip1,rof1,rof2); /* hard pulse */
calc_rf(&p1_rf,"tpwr1","tpwr1f");
init_rf(&p2_rf,p2pat,p2,flip2,rof1,rof2); /* hard pulse */
calc_rf(&p2_rf,"tpwr2","tpwr2f");
gf=1.0;
if(diff[0] == 'n') gf=0;
int vph180 = v2; /* Phase of 180 pulse */
mintDELTA = tdelta + trise + rof1 + p2 + rof2;
if(tDELTA <= mintDELTA) {
abort_message("%s: tDELTA too short. Min tDELTA = %f ms",seqfil,mintDELTA*1e3);
}
ted1 = tDELTA - tdelta + trise + p2 + rof1 + rof2;
te = p1/2 + rof2 + tdelta + trise + ted1 + rof1 + p2/2; /* first half-te */
ted2 = te - p2/2 - rof2 - tdelta - trise;
if((ted1 <= 0)||(ted2 <= 0) ) {
abort_message("%s: tDELTA too short. Min tDELTA = %f ms",seqfil,mintDELTA*1e3);
}
te = te*2.0;
putvalue("te",te);
seqtime = at+(p1/2.0)+rof1+te;
pd = tr - seqtime; /* predelay based on tr */
if (pd <= 0.0) {
abort_message("%s: Requested tr too short. Min tr = %f ms",seqfil,seqtime*1e3);
}
resto_local=resto-restol;
status(A);
rotate();
delay(pd);
xgate(ticks);
/* --- observe period --- */
obsoffset(resto_local);
obspower(p1_rf.powerCoarse);
obspwrf(p1_rf.powerFine);
shapedpulse(p1pat,p1,oph,rof1,rof2);
obl_gradient(0,0,gdiff*gf); /* x,y,z gradients selected via orient */
delay(tdelta);
zero_all_gradients();
delay(trise);
delay(ted1);
obspower(p2_rf.powerCoarse);
obspwrf(p2_rf.powerFine);
settable(t2,2,ph180); /* initialize phase tables and variables */
getelem(t2,ct,v6); /* 180 deg pulse phase alternates +/- 90 off the rcvr */
add(oph,v6,vph180); /* oph=zero */
shapedpulse(p2pat,p2,vph180,rof1,rof2);
obl_gradient(0,0,gdiff); /* x,y,z gradients selected via orient */
delay(tdelta);
zero_all_gradients();
delay(trise);
delay(ted2);
startacq(alfa);
acquire(np,1.0/sw);
endacq();
}
pulsesequence() {
// Set the Maximum Dynamic Table and v-var Numbers
settablenumber(10);
setvvarnumber(30);
// Define Variables and Objects and Get Parameter Values
double aXprep1 = getval("aXprep1"); // Define Tilted Pulses using "prep1X".
double pw1Xprep1 = getval("pw1Xprep1");
double pw2Xprep1 = getval("pw2Xprep1");
double phXprep1 = getval("phXprep1");
WMPA wpmlg = getwpmlg("wpmlgX");
strncpy(wpmlg.ch,"obs",3);
putCmd("chXwpmlg='obs'\n");
//--------------------------------------
// Copy Current Parameters to Processed
//-------------------------------------
putCmd("groupcopy('current','processed','acquisition')");
// Dutycycle Protection
DUTY d = init_dutycycle();
d.dutyon = getval("pw1Xprep1") + getval("pw2Xprep1") + 2.0*wpmlg.q*wpmlg.cycles*wpmlg.pw;
d.dutyoff = d1 + 4.0e-6 + 5.0e-6 + wpmlg.r1 + wpmlg.r2 +
at - 2.0*wpmlg.q*wpmlg.cycles*wpmlg.pw;
d = update_dutycycle(d);
abort_dutycycle(d,10.0);
// Set Phase Tables
settable(ph1Xprep1,4,table1);
settable(ph2Xprep1,4,table2);
settable(phXwpmlg,4,table3);
settable(phRec,4,table4);
setreceiver(phRec);
// Set the Small-Angle Step
double obsstep = 360.0/(PSD*8192);
obsstepsize(obsstep);
int phfXprep1 = initphase(phXprep1, obsstep);
int phXzero = initphase(0.0, obsstep);
// Begin Sequence
xmtrphase(phfXprep1); txphase(ph1Xprep1);
obspwrf(aXprep1);
obsunblank(); decunblank(); _unblank34();
delay(d1);
sp1on(); delay(2.0e-6); sp1off(); delay(2.0e-6);
// Tilted Preparation Pulse for FSLG or PMLG "prep1X"
startacq(5.0e-6);
rcvroff();
delay(wpmlg.r1);
rgpulse(pw1Xprep1, ph1Xprep1, 0.0, 0.0);
rgpulse(pw2Xprep1, ph2Xprep1, 0.0, 0.0);
xmtrphase(phXzero);
delay(wpmlg.r2);
// Apply WPMLG Cycles
decblank(); _blank34();
_wpmlg(wpmlg, phXwpmlg);
endacq();
obsunblank(); decunblank(); _unblank34();
}
pulsesequence()
{
/*******************************************************/
/* Internal variable declarations */
/*******************************************************/
double predelay;
double agss,grate,gssint, gssrint;
double t_after, acq_delay, min_tr;
double t_rampslice, t_plateau_sr, t_plateau_min, t_ramp_sr;
double slice_offset,f_offset;
double pss0;
char slice_select[MAXSTR];
initparms_sis(); /* Sets default state of receiver to ON */
/*- will be obsolete on future VNMR versions */
/***************************/
/* initialize variables */
/***************************/
gssf = 1.0; /* slice select fractional refocus */
predelay = PREDELAY; /* define predelay [s] */
acq_delay = ACQ_DELAY; /* time delay between end of refocus and acq */
slice_offset = 0.0; /* force slice offset to 0.0 [cm] */
t_rampslice = 0.0; /* slice select ramp time */
t_ramp_sr = 0.0; /* slice refocusing ramp time */
t_plateau_min = 0.0005; /* min time slice refocusing plateau */
t_plateau_sr =0.0; /* slice refocusing plateau time*/
f_offset=getval("resto");
agss = fabs(gss); /* absolute slice select gradient */
gssr = gmax; /* maximum slice refocusing gradient */
grate = trise/gmax; /* define gradient slew rate [s*cm/g]
trise = gradient rise time
gmax = maximum gradient strength [G/cm] */
ticks = IGNORE_TRIGGER; /* ignore trigger pulses */
/***************************/
/* Get parameter */
/***************************/
at = getval("at");
pss0 = getval("pss0");
getstr("slice_select",slice_select); /* slice select flag
[y] = ON, [n] = OFF */
/*******************************************************/
/* Slice Select gradient area */
/*******************************************************/
t_rampslice = grate * agss;
gssint = (agss*p1/2.0) + (agss*t_rampslice/2.0);
gssrint=gssint;
/*******************************************************
* Calculate slice refocussing gradient *
*******************************************************/
t_plateau_sr = (gssint / gssr) - trise;
if (t_plateau_sr <= 0.0) /* traingular gradients */
{
t_plateau_sr = 0.0;
gssr = sqrt(gssint / grate);
}
t_ramp_sr = gssr * grate; /* ramp time for refocusing gradient*/
gssrint = (gssr * t_plateau_sr) + (t_ramp_sr * gssr);
/***************************************************************************
* timing calculation *
***************************************************************************/
if (slice_select[0] == 'y')
{
t_after = tr - (predelay + p1 + t_plateau_sr + at + acq_delay + 2* (t_rampslice + t_ramp_sr));
min_tr = predelay + p1 + t_plateau_sr + at + acq_delay + 2* (t_rampslice + t_ramp_sr);
}
else
{
t_after = tr - (predelay + p1 + at + acq_delay );
min_tr = predelay + p1 + at + acq_delay ;
}
if (t_after < 0.0)
{
abort_message("Requested repetition time (TR) too short. Min tr = %.f[ms]\n",min_tr*1000);
}
/******************************************************/
/* */
/* S T A R T */
/* P U L S E S E Q U E N C E */
/* */
/******************************************************/
obspower(tpwr1); /* set tranmitter power */
/***************************************************************************
* Predelay *
***************************************************************************/
obsoffset(f_offset); /* set transmitter offset */
delay(predelay);
xgate(ticks); /* set gating */
if (slice_select[0] == 'y')
{
/***************************************************************************
* Slice select gradient & RF pulse *
***************************************************************************/
obl_gradient(0.0,0.0,gss); /* slice select gradient */
delay(t_rampslice); /* delay - time to ramp up gradient */
shaped_pulse(p1pat,p1,oph,rof1,rof1);
zero_all_gradients(); /* force all gradients back to 0 [G/cm] */
delay(t_rampslice); /* time to ramp down gradient */
/***************************************************************************
* Slice refocus gradient *
***************************************************************************/
obl_gradient(0.0,0.0,-gssr); /* slice refocus gradient */
delay(t_ramp_sr+t_plateau_sr); /* ramp up of refocus gradient */
zero_all_gradients(); /* force refocus gradient back to 0 [G/cm] */
delay(t_ramp_sr); /* time to ramp down gradient */
}
else
{
shaped_pulse(p1pat,p1,oph,rof1,rof1);
}
/***************************************************************************
* Pre-acquire delay *
***************************************************************************/
delay(acq_delay);
/***************************************************************************
* Acquire echo *
***************************************************************************/
startacq(alfa);
acquire(np,1.0/sw); /* acquire FID */
endacq();
delay(t_after); /* time padding to fill TR */
/******************************************************/
/* */
/* E N D */
/* P U L S E S E Q U E N C E */
/* */
/******************************************************/
}
void pulsesequence() {
// Define Variables and Objects and Get Parameter Values
CP hx = getcp("HX",0.0,0.0,0,1);
strncpy(hx.fr,"dec",3);
strncpy(hx.to,"obs",3);
putCmd("frHX='dec'\n");
putCmd("toHX='obs'\n");
MPSEQ spc5 = getspc5("spc5X",0,0.0,0.0,0,1);
MPSEQ spc5ref = getspc5("spc5X",spc5.iSuper,spc5.phAccum,spc5.phInt,1,1);
strncpy(spc5.ch,"obs",3);
putCmd("chXspc5='obs'\n");
DSEQ dec = getdseq("H");
strncpy(dec.t.ch,"dec",3);
putCmd("chHtppm='dec'\n");
strncpy(dec.s.ch,"dec",3);
putCmd("chHspinal='dec'\n");
// Set Constant-time Period for d2.
if (d2_index == 0) d2_init = getval("d2");
double d2_ = (ni - 1)/sw1 + d2_init;
putCmd("d2acqret = %f\n",roundoff(d2_,12.5e-9));
putCmd("d2dwret = %f\n",roundoff(1.0/sw1,12.5e-9));
//--------------------------------------
// Copy Current Parameters to Processed
//-------------------------------------
putCmd("groupcopy('current','processed','acquisition')");
// Dutycycle Protection
DUTY d = init_dutycycle();
d.dutyon = getval("pwH90") + getval("tHX") + getval("pwX90") +
spc5.t + spc5ref.t;
d.dutyoff = d1 + 4.0e-6 + 2.0*getval("tZF");
d.c1 = d.c1 + (!strcmp(dec.seq,"tppm"));
d.c1 = d.c1 + ((!strcmp(dec.seq,"tppm")) && (dec.t.a > 0.0));
d.t1 = d2_ + getval("rd") + getval("ad") + at;
d.c2 = d.c2 + (!strcmp(dec.seq,"spinal"));
d.c2 = d.c2 + ((!strcmp(dec.seq,"spinal")) && (dec.s.a > 0.0));
d.t2 = d2_ + getval("rd") + getval("ad") + at;
d = update_dutycycle(d);
abort_dutycycle(d,10.0);
// Create Phasetables
settable(phH90,4,table1);
settable(phHhx,4,table2);
settable(phXhx,4,table3);
settable(phXmix1,4,table4);
settable(phXmix2,4,table5);
settable(phRec,4,table6);
setreceiver(phRec);
if (phase1 == 2)
tsadd(phXhx,1,4);
// Begin Sequence
txphase(phXhx); decphase(phH90);
obspwrf(getval("aXhx")); decpwrf(getval("aH90"));
obsunblank(); decunblank(); _unblank34();
delay(d1);
sp1on(); delay(2.0e-6); sp1off(); delay(2.0e-6);
// H to X Cross Polarization
decrgpulse(getval("pwH90"),phH90,0.0,0.0);
decphase(phHhx);
_cp_(hx,phHhx,phXhx);
// F2 Indirect Period for X
obspwrf(getval("aX90"));
_dseqon(dec);
delay(d2);
_dseqoff(dec);
// Mixing with SPC5 Recoupling
rgpulse(getval("pwX90"),phXmix1,0.0,0.0);
obspwrf(getval("aXspc5"));
xmtrphase(v1); txphase(phXmix1);
delay(getval("tZF"));
decpwrf(getval("aHmix"));
decon();
_mpseq(spc5, phXmix1);
xmtrphase(v2); txphase(phXmix2);
_mpseq(spc5ref, phXmix2);
decoff();
obspwrf(getval("aX90"));
xmtrphase(zero); txphase(phXmix2);
delay(getval("tZF"));
rgpulse(getval("pwX90"),phXmix2,0.0,0.0);
// Begin Acquisition
_dseqon(dec);
obsblank(); _blank34();
delay(getval("rd"));
startacq(getval("ad"));
acquire(np, 1/sw);
endacq();
_dseqoff(dec);
obsunblank(); decunblank(); _unblank34();
}
void pulsesequence()
{
char c1d[MAXSTR]; /* option to record only 1D C13 spectrum */
int ncyc;
double tau1 = 0.002, /* t1 delay */
post_del = 0.0,
pwClvl = getval("pwClvl"), /* coarse power for C13 pulse */
pwC = getval("pwC"), /* C13 90 degree pulse length at pwClvl */
compC = getval("compC"),
compH = getval("compH"),
mixpwr = getval("mixpwr"),
jCH = getval("jCH"),
gt0 = getval("gt0"),
gt1 = getval("gt1"),
gt2 = getval("gt2"),
gzlvl0 = getval("gzlvl0"),
gzlvl1 = getval("gzlvl1"),
gzlvl2 = getval("gzlvl2"),
grec = getval("grec"),
phase = getval("phase");
getstr("c1d",c1d);
ncyc=1;
if(jCH > 0.0)
tau1 = 0.25/jCH;
dbl(ct, v1); /* v1 = 0 */
mod4(v1,oph);
hlv(ct,v2);
add(v2,v1,v2);
if (phase > 1.5)
incr(v1); /* hypercomplex phase increment */
initval(2.0*(double)((int)(d2*getval("sw1")+0.5)%2),v10);
add(v1,v10,v1);
add(oph,v10,oph);
mod4(v1,v1); mod4(v2,v2); mod4(oph,oph);
assign(zero,v3);
if(FIRST_FID)
{
HHmix = pbox_mix("HHmix", "DIPSI2", mixpwr, pw*compH, tpwr);
if(c1d[A] == 'n')
{
opx("CHdec"); setwave("WURST2 30k/1.2m"); pbox_par("steps","600"); cpx(pwC*compC, pwClvl);
CHdec = getDsh("CHdec");
}
}
ncyc = (int) (at/HHmix.pw) + 1;
post_del = ncyc*HHmix.pw - at;
/* BEGIN PULSE SEQUENCE */
status(A);
zgradpulse(gzlvl0, gt0);
rgpulse(pw, zero, 0.0, 0.0); /* destroy H-1 magnetization*/
zgradpulse(gzlvl0, gt0);
delay(1.0e-4);
obspower(tpwr);
txphase(v1);
decphase(zero);
dec2phase(zero);
presat();
obspower(tpwr);
delay(1.0e-5);
status(B);
if(c1d[A] == 'y')
{
rgpulse(pw,v1,0.0,0.0); /* 1H pulse excitation */
delay(d2);
rgpulse(pw,two,0.0,0.0); /* 1H pulse excitation */
assign(oph,v3);
}
else
{
decunblank(); pbox_decon(&CHdec);
rgpulse(pw,v1,0.0,0.0); /* 1H pulse excitation */
txphase(zero);
delay(d2);
pbox_decoff(); decblank();
decpower(pwClvl); decpwrf(4095.0);
delay(tau1 - POWER_DELAY);
simpulse(2.0*pw, 2.0*pwC, zero, zero, 0.0, 0.0);
txphase(one); decphase(one); dec2phase(one);
delay(tau1);
simpulse(pw, pwC, one, one, 0.0, 0.0);
txphase(zero); decphase(zero); dec2phase(zero);
delay(tau1);
simpulse(2.0*pw, 2.0*pwC, zero, zero, 0.0, 0.0);
delay(tau1);
simpulse(0.0, pwC, zero, zero, 0.0, 0.0);
}
zgradpulse(gzlvl1, gt1);
delay(grec);
simpulse(0.0, pwC, zero, v3, 0.0, rof2);
txphase(v2);
obsunblank(); pbox_xmtron(&HHmix);
status(C);
setactivercvrs("ny");
startacq(alfa);
acquire(np,1.0/sw);
endacq();
delay(post_del);
pbox_xmtroff(); obsblank();
zgradpulse(gzlvl2, gt2);
obspower(tpwr);
delay(grec);
rgpulse(pw,zero,0.0,rof2); /* 1H pulse excitation */
status(D);
setactivercvrs("yn");
startacq(alfa);
acquire(np,1.0/sw);
endacq();
}
pulsesequence()
{
/* DECLARE AND LOAD VARIABLES */
char f1180[MAXSTR], /* Flag to start t1 @ halfdwell */
f2180[MAXSTR], /* Flag to start t2 @ halfdwell */
rna_stCdec[MAXSTR], /* calls STUD+ waveforms from shapelib */
STUD[MAXSTR]; /* apply automatically calculated STUD decoupling */
int icosel1, /* used to get n and p type */
icosel2,
t1_counter, /* used for states tppi in t1 */
t2_counter, /* used for states tppi in t2 */
ni2 = getval("ni2");
double tau1, /* t1 delay */
tau2, /* t2 delay */
del = getval("del"), /* time delays for CH coupling evolution */
del1 = getval("del1"),
del2 = getval("del2"),
/* STUD+ waveforms automatically calculated by macro "rnacal" */
/* and string parameter rna_stCdec calls them from your shapelib.*/
stdmf, /* dmf for STUD decoupling */
studlvl, /* coarse power for STUD+ decoupling */
rf80 = getval("rf80"), /* rf in Hz for 80ppm STUD+ */
pwClvl = getval("pwClvl"), /* coarse power for C13 pulse */
pwC = getval("pwC"), /* C13 90 degree pulse length at pwClvl */
rfC, /* maximum fine power when using pwC pulses */
dofa, /* dof shifted to 80 ppm for ribose */
/* p_d is used to calculate the isotropic mixing on the Cab region */
p_d, /* 50 degree pulse for DIPSI-3 at rfd */
rfd, /* fine power for 35 ppm */
ncyc = getval("ncyc"), /* no. of cycles of DIPSI-3 */
compC = getval("compC"), /* adjustment for C13 amplifier compression */
pwNlvl = getval("pwNlvl"), /* power for N15 pulses */
pwN = getval("pwN"), /* N15 90 degree pulse length at pwNlvl */
sw1 = getval("sw1"),
sw2 = getval("sw2"),
grecov = getval("grecov"), /* Gradient recovery delay, typically 150-200us */
gt1 = getval("gt1"), /* coherence pathway gradients */
gzlvl1 = getval("gzlvl1"),
gzlvl2 = getval("gzlvl2"),
gt3 = getval("gt3"), /* other gradients */
gt5 = getval("gt5"),
gzlvl3 = getval("gzlvl3"),
gzlvl4 = getval("gzlvl4"),
gzlvl5 = getval("gzlvl5"),
gzlvl6 = getval("gzlvl6");
getstr("STUD",STUD);
getstr("f1180",f1180);
getstr("f2180",f2180);
/* LOAD PHASE TABLE */
settable(t3,2,phi3);
settable(t6,1,phi6);
settable(t5,4,phi5);
settable(t10,1,phi10);
settable(t11,4,rec);
/* INITIALIZE VARIABLES */
if( dpwrf < 4095 )
{ text_error("reset dpwrf=4095 and recalibrate C13 90 degree pulse");
psg_abort(1); }
/* maximum fine power for pwC pulses */
rfC = 4095.0;
/* Center dof in RIBOSE region on 80 ppm. */
dofa = dof - 30.0*dfrq;
/* dipsi-3 decoupling C-ribose */
p_d = (5.0)/(9.0*4.0*7000.0*(sfrq/800.0)); /* DIPSI-3 covers 35 ppm */
rfd = (compC*4095.0*pwC*5.0)/(p_d*9.0);
rfd = (int) (rfd + 0.5);
ncyc = (int) (ncyc + 0.5);
/* 80 ppm STUD+ decoupling */
strcpy(rna_stCdec, "wurst80");
stdmf = getval("dmf80");
studlvl = pwClvl + 20.0*log10(compC*pwC*4.0*rf80);
studlvl = (int) (studlvl + 0.5);
/* CHECK VALIDITY OF PARAMETER RANGES */
if( gt1 > 0.5*del - 0.5*grecov )
{ text_error(" gt1 is too big. Make gt1 less than %f.\n", (0.5*del - 0.5*grecov)); psg_abort(1);}
if((dm3[A] == 'y' || dm3[C] == 'y' ))
{ text_error("incorrect dec1 decoupler flags! Should be 'nyn' or 'nnn' "); psg_abort(1); }
if((dm2[A] == 'y' || dm2[B] == 'y'))
{ text_error("incorrect dec2 decoupler flags! Should be 'nnn' or 'nny' "); psg_abort(1); }
if((dm[A] == 'y' || dm[B] == 'y'))
{ text_error("incorrect dec1 decoupler flags! Should be 'nny' "); psg_abort(1); }
if( (((dm[C] == 'y') && (dm2[C] == 'y')) && (STUD[A] == 'y')) )
{ text_error("incorrect dec2 decoupler flags! Should be 'nnn' if STUD='y'"); psg_abort(1); }
if( dpwr > 50 )
{ text_error("don't fry the probe, DPWR too large! "); psg_abort(1); }
if( dpwr2 > 50 )
{ text_error("don't fry the probe, DPWR2 too large! "); psg_abort(1); }
if( (pw > 20.0e-6) && (tpwr > 56) )
{ text_error("don't fry the probe, pw too high ! "); psg_abort(1); }
if( (pwC > 40.0e-6) && (pwClvl > 56) )
{ text_error("don't fry the probe, pwN too high ! "); psg_abort(1); }
if( (pwN > 100.0e-6) && (pwNlvl > 56) )
{ text_error("don't fry the probe, pwN too high ! "); psg_abort(1); }
if ((dm3[B] == 'y' && dpwr3 > 44 ))
{ text_error ("Deuterium decoupling power too high ! "); psg_abort(1); }
if ((ncyc > 1 ) && (ix == 1))
{ text_error("mixing time is %f ms.\n",(ncyc*97.8*4*p_d)); }
/* PHASES AND INCREMENTED TIMES */
/* Phase incrementation for hypercomplex 2D data, States-Haberkorn element */
icosel1 = -1; icosel2 = -1;
if (phase1 == 2)
{ tsadd(t6,2,4); icosel1 = -1*icosel1; }
if (phase2 == 2)
{ tsadd(t10,2,4); icosel2 = -1*icosel2; tsadd(t6,2,4); }
/* Set up f1180 */
tau1 = d2;
if((f1180[A] == 'y') && (ni > 1.0))
{ tau1 += ( 1.0 / (2.0*sw1) ); if(tau1 < 0.2e-6) tau1 = 0.0; }
tau1 = tau1/2.0;
/* Set up f2180 */
tau2 = d3;
if((f2180[A] == 'y') && (ni2 > 1.0))
{ tau2 += ( 1.0 / (2.0*sw2) ); if(tau2 < 0.2e-6) tau2 = 0.0; }
tau2 = tau2/2.0;
/* Calculate modifications to phases for States-TPPI acquisition */
if( ix == 1) d2_init = d2;
t1_counter = (int) ( (d2-d2_init)*sw1 + 0.5 );
if(t1_counter % 2)
{ tsadd(t3,2,4); tsadd(t11,2,4); }
if( ix == 1) d3_init = d3;
t2_counter = (int) ( (d3-d3_init)*sw2 + 0.5 );
if(t2_counter % 2)
{ tsadd(t5,2,4); tsadd(t11,2,4); }
/* BEGIN PULSE SEQUENCE */
status(A);
if (dm3[B]=='y') lk_sample();
delay(d1);
if (dm3[B]=='y') lk_hold();
rcvroff();
obspower(tpwr);
decpower(pwClvl);
dec2power(pwNlvl);
decpwrf(rfC);
obsoffset(tof);
decoffset(dofa);
dec2offset(dof2);
txphase(t3);
delay(1.0e-5);
decrgpulse(pwC, zero, 0.0, 0.0); /*destroy C13 magnetization*/
zgradpulse(gzlvl1, 0.5e-3);
delay(grecov/2);
decrgpulse(pwC, one, 0.0, 0.0);
zgradpulse(0.7*gzlvl1, 0.5e-3);
delay(5.0e-4);
if(dm3[B] == 'y') /*optional 2H decoupling on */
{
dec3unblank();
dec3rgpulse(1/dmf3, one, 0.0, 0.0);
dec3unblank();
setstatus(DEC3ch, TRUE, 'w', FALSE, dmf3);
}
rgpulse(pw, t3, 0.0, 0.0); /* 1H pulse excitation */
decphase(zero);
delay(0.5*del + tau1 - 2.0*pwC);
decrgpulse(2.0*pwC, zero, 0.0, 0.0);
txphase(zero);
delay(tau1);
rgpulse(2.0*pw, zero, 0.0, 0.0);
zgradpulse(icosel1*gzlvl1, 0.1*gt1);
decphase(t5);
delay(0.5*del - 0.1*gt1);
simpulse(pw, pwC, zero, t5, 0.0, 0.0);
zgradpulse(gzlvl3, gt3);
decphase(zero);
delay(0.5*del2 - gt3);
simpulse(2.0*pw, 2.0*pwC, zero, zero, 0.0, 0.0);
zgradpulse(gzlvl3, gt3);
txphase(t6);
decphase(one);
delay(0.5*del2 - gt3);
simpulse(pw, pwC, t6, one, 0.0, 0.0);
zgradpulse(gzlvl4, gt3);
txphase(zero);
decphase(zero);
delay(0.5*del1 - gt3);
simpulse(2.0*pw, 2.0*pwC, zero, zero, 0.0, 0.0);
zgradpulse(gzlvl4, gt3);
delay(0.5*del1 - gt3);
decrgpulse(pwC, zero, 0.0, 0.0);
decpwrf(rfd);
delay(2.0e-6);
initval(ncyc, v2);
starthardloop(v2);
decrgpulse(4.9*p_d,zero,0.0,0.0);
decrgpulse(7.9*p_d,two,0.0,0.0);
decrgpulse(5.0*p_d,zero,0.0,0.0);
decrgpulse(5.5*p_d,two,0.0,0.0);
decrgpulse(0.6*p_d,zero,0.0,0.0);
decrgpulse(4.6*p_d,two,0.0,0.0);
decrgpulse(7.2*p_d,zero,0.0,0.0);
decrgpulse(4.9*p_d,two,0.0,0.0);
decrgpulse(7.4*p_d,zero,0.0,0.0);
decrgpulse(6.8*p_d,two,0.0,0.0);
decrgpulse(7.0*p_d,zero,0.0,0.0);
decrgpulse(5.2*p_d,two,0.0,0.0);
decrgpulse(5.4*p_d,zero,0.0,0.0);
decrgpulse(0.6*p_d,two,0.0,0.0);
decrgpulse(4.5*p_d,zero,0.0,0.0);
decrgpulse(7.3*p_d,two,0.0,0.0);
decrgpulse(5.1*p_d,zero,0.0,0.0);
decrgpulse(7.9*p_d,two,0.0,0.0);
decrgpulse(4.9*p_d,two,0.0,0.0);
decrgpulse(7.9*p_d,zero,0.0,0.0);
decrgpulse(5.0*p_d,two,0.0,0.0);
decrgpulse(5.5*p_d,zero,0.0,0.0);
decrgpulse(0.6*p_d,two,0.0,0.0);
decrgpulse(4.6*p_d,zero,0.0,0.0);
decrgpulse(7.2*p_d,two,0.0,0.0);
decrgpulse(4.9*p_d,zero,0.0,0.0);
decrgpulse(7.4*p_d,two,0.0,0.0);
decrgpulse(6.8*p_d,zero,0.0,0.0);
decrgpulse(7.0*p_d,two,0.0,0.0);
decrgpulse(5.2*p_d,zero,0.0,0.0);
decrgpulse(5.4*p_d,two,0.0,0.0);
decrgpulse(0.6*p_d,zero,0.0,0.0);
decrgpulse(4.5*p_d,two,0.0,0.0);
decrgpulse(7.3*p_d,zero,0.0,0.0);
decrgpulse(5.1*p_d,two,0.0,0.0);
decrgpulse(7.9*p_d,zero,0.0,0.0);
decrgpulse(4.9*p_d,two,0.0,0.0);
decrgpulse(7.9*p_d,zero,0.0,0.0);
decrgpulse(5.0*p_d,two,0.0,0.0);
decrgpulse(5.5*p_d,zero,0.0,0.0);
decrgpulse(0.6*p_d,two,0.0,0.0);
decrgpulse(4.6*p_d,zero,0.0,0.0);
decrgpulse(7.2*p_d,two,0.0,0.0);
decrgpulse(4.9*p_d,zero,0.0,0.0);
decrgpulse(7.4*p_d,two,0.0,0.0);
decrgpulse(6.8*p_d,zero,0.0,0.0);
decrgpulse(7.0*p_d,two,0.0,0.0);
decrgpulse(5.2*p_d,zero,0.0,0.0);
decrgpulse(5.4*p_d,two,0.0,0.0);
decrgpulse(0.6*p_d,zero,0.0,0.0);
decrgpulse(4.5*p_d,two,0.0,0.0);
decrgpulse(7.3*p_d,zero,0.0,0.0);
decrgpulse(5.1*p_d,two,0.0,0.0);
decrgpulse(7.9*p_d,zero,0.0,0.0);
decrgpulse(4.9*p_d,zero,0.0,0.0);
decrgpulse(7.9*p_d,two,0.0,0.0);
decrgpulse(5.0*p_d,zero,0.0,0.0);
decrgpulse(5.5*p_d,two,0.0,0.0);
decrgpulse(0.6*p_d,zero,0.0,0.0);
decrgpulse(4.6*p_d,two,0.0,0.0);
decrgpulse(7.2*p_d,zero,0.0,0.0);
decrgpulse(4.9*p_d,two,0.0,0.0);
decrgpulse(7.4*p_d,zero,0.0,0.0);
decrgpulse(6.8*p_d,two,0.0,0.0);
decrgpulse(7.0*p_d,zero,0.0,0.0);
decrgpulse(5.2*p_d,two,0.0,0.0);
decrgpulse(5.4*p_d,zero,0.0,0.0);
decrgpulse(0.6*p_d,two,0.0,0.0);
decrgpulse(4.5*p_d,zero,0.0,0.0);
decrgpulse(7.3*p_d,two,0.0,0.0);
decrgpulse(5.1*p_d,zero,0.0,0.0);
decrgpulse(7.9*p_d,two,0.0,0.0);
endhardloop();
dec2phase(zero);
decphase(zero);
txphase(zero);
decpwrf(rfC);
delay(tau2);
sim3pulse(2.0*pw, 0.0, 2.0*pwN, zero, zero, zero, 0.0, 0.0);
delay(tau2);
decpwrf(rfC);
zgradpulse(-icosel2*gzlvl2, 1.8*gt1);
delay(grecov+2.0e-6);
decrgpulse(2.0*pwC, zero, 0.0, 0.0);
decpwrf(rfC);
zgradpulse(icosel2*gzlvl2, 1.8*gt1);
delay(grecov + pwN);
decrgpulse(pwC, zero, 0.0, 0.0);
decpwrf(rfC);
decrgpulse(pwC, zero, 2.0e-6, 0.0);
zgradpulse(gzlvl5, gt5);
delay(0.5*del1 - gt5);
simpulse(2.0*pw, 2.0*pwC, zero, zero, 0.0, 0.0);
zgradpulse(gzlvl5, gt5);
txphase(one);
decphase(t10);
delay(0.5*del1 - gt5);
simpulse(pw, pwC, one, t10, 0.0, 0.0);
zgradpulse(gzlvl6, gt5);
txphase(zero);
decphase(zero);
delay(0.5*del2 - gt5);
simpulse(2.0*pw, 2.0*pwC, zero, zero, 0.0, 0.0);
zgradpulse(gzlvl6, gt5);
delay(0.5*del2 - gt5);
simpulse(pw, pwC, zero, zero, 0.0, 0.0);
delay(0.5*del - 0.5*pwC);
simpulse(2.0*pw,2.0*pwC, zero, zero, 0.0, 0.0);
if (STUD[A]=='y') decpower(studlvl);
else
{
decpower(dpwr);
dec2power(dpwr2);
}
zgradpulse(gzlvl1, gt1); /* 2.0*GRADIENT_DELAY */
if(dm3[B] == 'y')
delay(0.5*del - gt1 -1/dmf3 - 2.0*GRADIENT_DELAY - POWER_DELAY);
else
delay(0.5*del - gt1 - 2.0*GRADIENT_DELAY - POWER_DELAY);
if(dm3[B] == 'y') /*optional 2H decoupling off */
{
dec3rgpulse(1/dmf3, three, 0.0, 0.0); dec3blank();
setstatus(DEC3ch, FALSE, 'w', FALSE, dmf3);
dec3blank();
}
decpower(dpwr); /* POWER_DELAY */
if (dm3[B]=='y') lk_sample();
if ((STUD[A]=='y') && (dm[C] == 'y'))
{decpower(studlvl);
decunblank();
decon();
decprgon(rna_stCdec,1/stdmf, 1.0);
startacq(alfa);
acquire(np, 1.0/sw);
decprgoff();
decoff();
decblank();
}
else
status(C);
setreceiver(t11);
}
void pulsesequence() {
// Set the Maximum Dynamic Table and v-var Numbers
settablenumber(20);
setvvarnumber(30);
// Define Variables and Objects and Get Parameter Values
MPSEQ dumbo = getdumbogen("dumboX","dcf1X",0,0.0,0.0,0,1);
strncpy(dumbo.ch,"obs",3);
putCmd("chXdumbo='obs'\n");
MPSEQ c7 = getpostc7("c7X",0,0.0,0.0,0,1);
MPSEQ c7ref = getpostc7("c7X",c7.iSuper,c7.phAccum,c7.phInt,1,1);
strncpy(c7.ch,"obs",3);
putCmd("chXc7='obs'\n");
WMPA wdumbo = getwdumbogen("wdumboX","dcfX");
strncpy(wdumbo.ch,"obs",3);
putCmd("chXwdumbo='obs'\n");
double tXzfinit = getval("tXzf"); //Define the Z-filter delay in the sequence
double tXzf = tXzfinit - 5.0e-6 - wdumbo.r1;
// Set Constant-time Period for d2.
if (d2_index == 0) d2_init = getval("d2");
double d2_ = (ni - 1)/sw1 + d2_init;
putCmd("d2acqret = %f\n",roundoff(d2_,12.5e-9));
putCmd("d2dwret = %f\n",roundoff(1.0/sw1,12.5e-9));
//--------------------------------------
// Copy Current Parameters to Processed
//-------------------------------------
putCmd("groupcopy('current','processed','acquisition')");
// Dutycycle Protection
DUTY d = init_dutycycle();
d.dutyon = c7.t + getval("pwXtilt") + d2_ + getval("pwXtilt") + c7ref.t + getval("pwX90") +
+ wdumbo.q*wdumbo.cycles*wdumbo.pw;
d.dutyoff = 4.0e-6 + d1 + tXzfinit + wdumbo.r2 + at - wdumbo.q*wdumbo.cycles*wdumbo.pw;
d = update_dutycycle(d);
abort_dutycycle(d,10.0);
// Set Phase Tables
settable(ph1Xc7,4,table1);
settable(phXdumbo,4,table2);
settable(ph2Xc7,4,table3);
settable(phX90,16,table4);
settable(phXwdumbo,4,table5);
settable(phRec,16,table6);
settable(ph1Xtilt,4,table7);
settable(ph2Xtilt,4,table8);
// Set the Small-Angle Prep Phase
double obsstep = 360.0/(PSD*8192);
obsstepsize(obsstep);
int phfX90 = initphase(0.0, obsstep);
//Add STATES Quadrature Phase
if (phase1 == 2)
initval((45.0/obsstep),v1);
else
initval(0.0,v1);
initval((d2*c7.of[0]*360.0/obsstep),v2);
initval(0.0,v3);
obsstepsize(obsstep);
setreceiver(phRec);
// Begin Sequence
xmtrphase(v1); txphase(ph1Xc7);
obspwrf(getval("aXc7"));
obsunblank(); decunblank(); _unblank34();
delay(d1);
sp1on(); delay(2.0e-6); sp1off(); delay(2.0e-6);
// C7 Recoupling of 2Q coherence
_mpseq(c7, ph1Xc7);
// F1 Evolution With DUMBO
xmtrphase(v3);
if (!getval("scXdcf1")){
obspwrf(getval("aX90"));
rgpulse(getval("pwXtilt"),ph1Xtilt,0.0,0.0);
}
obspwrf(getval("aXdumbo"));
obsunblank();
_mpseqon(dumbo,phXdumbo);
delay(d2);
_mpseqoff(dumbo);
if (!getval("scXdcf1")){
obspwrf(getval("aX90"));
rgpulse(getval("pwXtilt"),ph2Xtilt,0.0,0.0);
}
obspwrf(getval("aX90"));
obsunblank();
// C7 Transfer to 1Q Coherence
xmtrphase(v2);
_mpseq(c7ref, ph2Xc7);
// Z-filter Delay
delay(tXzf);
// Detection Pulse
txphase(phX90);
obspwrf(getval("aX90"));
startacq(5.0e-6);
rcvroff();
delay(wdumbo.r1);
rgpulse(getval("pwX90"), phX90, 0.0, 0.0);
obsunblank();
xmtrphase(v3);
delay(wdumbo.r2);
// Apply WPMLG Cycles During Acqusition
decblank(); _blank34();
_wdumbo(wdumbo,phXwdumbo);
endacq();
obsunblank(); decunblank(); _unblank34();
}
pulsesequence()
{
/* Internal variable declarations *************************/
/*timing*/
double tr_delay;
double te_d1,te_d2,te_d3; /* delays */
double tau1,tau2,tau3;
/*voxel crusher multipliers */
double fx,fy,fz;
/*localization parameters*/
double freq1,freq2,freq3;
double vox1_cr,vox2_cr, vox3_cr;
int nDim;
double rprof,pprof,sprof;
char profile_vox[MAXSTR],profile_ovs[MAXSTR];
double restol, resto_local, csd_ppm;
/*phase cycle****/
int counter,noph;
char autoph[MAXSTR], pcflag[MAXSTR];
int rf1_phase[64] = {0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,
1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3};
int rf2_phase[64] = {0,0,0,0,2,2,2,2,1,1,1,1,3,3,3,3,0,0,0,0,2,2,2,2,1,1,1,1,3,3,3,3,
0,0,0,0,2,2,2,2,1,1,1,1,3,3,3,3,0,0,0,0,2,2,2,2,1,1,1,1,3,3,3,3};
int rf3_phase[64] = {0,2,1,3,0,2,1,3,0,2,1,3,0,2,1,3,0,2,1,3,0,2,1,3,0,2,1,3,0,2,1,3,
0,2,1,3,0,2,1,3,0,2,1,3,0,2,1,3,0,2,1,3,0,2,1,3,0,2,1,3,0,2,1,3};
/* Initialize paramaters **********************************/
init_mri(); //this gets all the parameters that are defined in acqparms.h, etc
get_wsparameters();
get_ovsparameters();
rprof = getval("rprof");
pprof = getval("pprof");
sprof = getval("sprof");
//read the crusher factors that are designed to create grad on the same axis without refoc
fx=getval("fx");
fy=getval("fy");
fz=getval("fz");
getstr("profile_vox",profile_vox);
getstr("profile_ovs",profile_ovs);
/*set voxel sizes for butterfly crushers to 10^6 to set the slice portion to zero ***/
vox1_cr=1000000;
vox2_cr=1000000;
vox3_cr=1000000;
/***** RF power initialize *****/
init_rf(&p1_rf,p1pat,p1,flip1,rof1,rof2);
init_rf(&p2_rf,p2pat,p2,flip2,rof1,rof2);
/***** Initialize gradient structs *****/
trampfixed=trise; //rise time =trise
tcrush=granularity(tcrush,GRADIENT_RES); //this is to avoid the granularity errors
//if trampfixed is used, rise time needs to be checked
if (trise*2>tcrush){
abort_message("tcrush too short. Minimum tcrush = %fms \n",1000*trise*2);
}
if (gcrush>gmax){
abort_message("gcrush too large. Max gcrush = %f \n",gmax*0.95);
}
init_slice_butterfly(&vox1_grad,"vox1",vox1,gcrush,tcrush);
init_slice_butterfly(&vox2_grad,"vox2",vox2,gcrush,tcrush);
init_slice_butterfly(&vox3_grad,"vox3",vox3,gcrush,tcrush);
init_slice_butterfly(&vox1_crush,"vox1_crush",vox1_cr,gcrush,tcrush);
init_slice_butterfly(&vox2_crush,"vox2_crush",vox2_cr,gcrush,tcrush);
init_slice_butterfly(&vox3_crush,"vox3_crush",vox3_cr,gcrush,tcrush);
if (profile_vox[0] == 'y') {
init_readout_butterfly(&ro_grad,"ro",lro,np,sw,gcrushro,tcrushro);
init_readout_refocus(&ror_grad,"ror");
}
/***** RF and Gradient calculations *****/
calc_rf(&p1_rf,"tpwr1","tpwr1f");
calc_rf(&p2_rf,"tpwr2","tpwr2f");
calc_slice(&vox1_grad,&p2_rf,WRITE,"gvox1");
calc_slice(&vox2_grad,&p2_rf,WRITE,"gvox2");
calc_slice(&vox3_grad,&p2_rf,WRITE,"gvox3");
calc_slice(&vox1_crush,&p2_rf,WRITE,"vox1_crush");
calc_slice(&vox2_crush,&p2_rf,WRITE,"vox2_crush");
calc_slice(&vox3_crush,&p2_rf,WRITE,"vox3_crush");
if (profile_vox[0] == 'y') {
calc_readout(&ro_grad,WRITE,"gro","sw","at");
putvalue("gro",ro_grad.roamp); // RO grad
calc_readout_refocus(&ror_grad,&ro_grad,WRITE,"gror");
putvalue("tror",ror_grad.duration); // ROR duration
}
//set all gradients along a particular direction to zero if profile is needed
if (profile_ovs[0]=='y'){
if (rprof==1) {
vox1_grad.amp=0; //set slice selection in read direction to none
vox3_crush.amp=0; // set corresponding crusher gradients to none
}
else if(pprof==1) {
vox2_grad.amp=0;
vox1_crush.amp=0;
}
else if(sprof==1) {
vox3_grad.amp=0;
vox2_crush.amp=0;
}
}
/* Optional OVS and Water Suppression */
if (ovs[0] == 'y') create_ovsbands();
if (sat[0] == 'y') create_satbands();
if (ws[0] == 'y') create_watersuppress();
//Read in parameters not defined in acqparms.h and sglHelper
nDim=getval("nDim");
restol=getval("restol"); //local frequency offset
roff=getval("roff"); //receiver offset
csd_ppm=getval("csd_ppm"); //chemical shift displacement factor
noph=getval("noph");
getstr("autoph",autoph);
getstr("pcflag",pcflag);
settable(t3,noph,rf1_phase);
settable(t2,noph,rf2_phase);
settable(t1,noph,rf3_phase);
/* tau1, tau2 and tau3 are sums of all events in TE*/
tau1 = vox1_grad.rfCenterFront+GDELAY+rof2;
tau2 = vox1_grad.rfCenterBack + vox1_grad.rfCenterFront+2*(GDELAY+rof2);
tau3 = vox3_grad.rfCenterBack+GDELAY+rof2;
temin = tau1+5.0*tau2+tau3;
if (minte[0] == 'y') {
te = temin;
putvalue("te",te);
}
if (te < temin) {
abort_message("te too short. Minimum te = %.2f ms\n",temin*1000);
}
/***** Calculate TE delays *****/
te_d1 = te/12.0 - tau1+GDELAY;
te_d2 = te/6.0 - tau2+2*(GDELAY+rof2);
te_d3 = te/12.0 - tau3+GDELAY+rof2;
//Calculate delta from resto to include local frequency line+ chemical shift offset
resto_local=resto-restol;
/***** Min TR *****/
trmin = GDELAY + p1 + te + at+rof1+rof2;
if (ws[0] == 'y') trmin += wsTime;
if (ovs[0] == 'y') trmin += ovsTime;
if (sat[0] == 'y') trmin += satTime;
if (profile_vox[0] == 'y') trmin += ror_grad.duration + ro_grad.duration - at;
if (mintr[0] == 'y') {
tr = trmin; // ensure at least 4us between gradient events
putvalue("tr",tr);
}
if ((trmin-tr) > 12.5e-9) {
abort_message("TR too short. Minimum TR= %.2fms\n",trmin*1000);
}
/***** Calculate TR delay *****/
tr_delay = tr - trmin;
/* Frequency offsets */
freq1 = poffset(pos1,vox1_grad.ssamp); // First RF pulse
freq2 = poffset(pos2,vox2_grad.ssamp); // Second RF pulse
freq3 = poffset(pos3,vox3_grad.ssamp); // Third RF pulse
freq1=freq1-csd_ppm*sfrq;
freq2=freq2-csd_ppm*sfrq;
freq3=freq3-csd_ppm*sfrq;
/* Frequency offsets */
if (profile_vox[0] == 'y') {
/* Shift DDR for pro ************************************/
roff = -poffset(pro,ro_grad.roamp);
}
/* Put gradient information back into VnmrJ parameters */
putvalue("gvox1",vox1_grad.ssamp);
putvalue("gvox2",vox2_grad.ssamp);
putvalue("gvox3",vox3_grad.ssamp);
putvalue("rgvox1",vox1_grad.tramp);
putvalue("rgvox2",vox2_grad.tramp);
putvalue("rgvox3",vox3_grad.tramp);
sgl_error_check(sglerror);
if (ss<0) g_setExpTime(tr*(nt-ss)*arraydim);
else g_setExpTime(tr*(nt*arraydim+ss));
/**[2.7] PHASE CYCLING ******************************************************/
assign(zero, oph);
counter=(double)nt*(ix-1);
if (autoph[0] == 'n') counter=0.0; //only goes through nt, if 'y' goes through nt*array
initval(counter,v1);
initval(noph,v3);
add(v1,ct,v2);
modn(v2,v3,v2);
/* Full phase cycling requires 64 steps*/
if (pcflag[0] == 'n') {
assign(zero,v2);
getelem(t1,v2,v10);
getelem(t2,v2,v11);
getelem(t3,v2,v12);
}
else
{
getelem(t1,v2,v10);
getelem(t2,v2,v11);
getelem(t3,v2,v12);
}
/*Start of the sequence*/
obsoffset(resto_local); // need it here for water suppression to work
delay(GDELAY);
rot_angle(vpsi,vphi,vtheta);
if (ticks) {
xgate(ticks);
grad_advance(gpropdelay);
delay(4e-6);
}
/* TTL scope trigger **********************************/
//sp1on(); delay(4e-6); sp1off();
/* Saturation bands ***********************************/
if (ovs[0] == 'y') ovsbands();
if (sat[0] == 'y') satbands();
/* Water suppression **********************************/
if (ws[0] == 'y') watersuppress();
/* Slice selective 90 degree RF pulse *****/
obspower(p1_rf.powerCoarse);
obspwrf(p1_rf.powerFine);
delay(GDELAY);
shaped_pulse(p1pat,p1,zero,rof1,rof2);
/* start localization */
obspower(p2_rf.powerCoarse);
obspwrf(p2_rf.powerFine);
if (nDim > 2.5) {
delay(te_d1); //this is at least GDELAY == 4 us
obl_shaped3gradient(vox1_grad.name,vox1_crush.name,"",vox1_grad.duration,vox1_grad.amp,fy*vox1_crush.amp,0,NOWAIT);
delay(vox1_grad.rfDelayFront);
if (profile_ovs[0]=='y'&& rprof==1) freq1=0.0;
shapedpulseoffset(p2_rf.pulseName,vox1_grad.rfDuration,v12,rof1,rof2,freq1);
delay(vox1_grad.rfDelayBack);
delay(te_d2);
obl_shaped3gradient (vox1_grad.name,vox1_crush.name,"",vox1_grad.duration,vox1_grad.amp,fy*0.777*vox1_crush.amp,0,NOWAIT);
delay(vox1_grad.rfDelayFront);
if (profile_ovs[0]=='y'&& rprof==1) freq1=0.0;
shapedpulseoffset(p2_rf.pulseName,vox1_grad.rfDuration,v12,rof1,rof2,freq1);
delay(vox1_grad.rfDelayBack);
delay(te_d2);
}
if (nDim > 1.5) { //this is 2nd slice selection
obl_shaped3gradient("",vox2_grad.name,vox2_crush.name,vox2_grad.duration,0,vox2_grad.amp,fz*vox2_crush.amp,NOWAIT);
delay(vox2_grad.rfDelayFront);
if (profile_ovs[0]=='y'&& pprof==1) freq2=0.0;
shapedpulseoffset(p2_rf.pulseName,vox2_grad.rfDuration,v11,rof1,rof2,freq2);
delay(vox2_grad.rfDelayBack);
delay(te_d2);
obl_shaped3gradient("",vox2_grad.name,vox2_crush.name,vox2_grad.duration,0,vox2_grad.amp,fz*0.777*vox2_crush.amp,NOWAIT);
delay(vox2_grad.rfDelayFront);
if (profile_ovs[0]=='y'&& pprof==1) freq2=0.0;
shapedpulseoffset(p2_rf.pulseName,vox2_grad.rfDuration,v11,rof1,rof2,freq2);
delay(vox2_grad.rfDelayBack);
delay(te_d2);
}
if (nDim > 0.5){ //this is 3rd slice selection
obl_shaped3gradient(vox3_crush.name,"",vox3_grad.name,vox3_grad.duration,fx*vox3_crush.amp,0,vox3_grad.amp,NOWAIT);
delay(vox3_grad.rfDelayFront);
if (profile_ovs[0]=='y'&& sprof==1) freq3=0.0;
shapedpulseoffset(p2_rf.pulseName,vox3_grad.rfDuration,v10,rof1,rof2,freq3);
delay(vox3_grad.rfDelayBack);
delay(te_d2);
obl_shaped3gradient(vox3_crush.name,"",vox3_grad.name,vox3_grad.duration,fx*vox3_crush.amp,0,vox3_grad.amp,NOWAIT);
delay(vox3_grad.rfDelayFront);
if (profile_ovs[0]=='y'&& sprof==1) freq3=0.0;
shapedpulseoffset(p2_rf.pulseName,vox3_grad.rfDuration,v10,rof1,rof2,freq3);
delay(vox3_grad.rfDelayBack);
delay(te_d3);
}
if (profile_vox[0] == 'y') {
obl_shapedgradient(ror_grad.name,ror_grad.duration,
-rprof*ror_grad.amp,-pprof*ror_grad.amp,-sprof*ror_grad.amp,WAIT);
delay(GDELAY);
obl_shapedgradient(ro_grad.name,ro_grad.duration,
rprof*ro_grad.amp,pprof*ro_grad.amp,sprof*ro_grad.amp,NOWAIT);
delay(ro_grad.atDelayFront);
startacq(alfa);
acquire(np,1.0/sw);
delay(ro_grad.atDelayBack);
endacq();
} else {
startacq(alfa);
acquire(np,1.0/sw);
endacq();
}
delay(tr_delay);
pulsesequence()
{
/* Internal variable declarations *************************/
double freqEx[MAXNSLICE];
double maxgradtime,spoilMoment,perTime,tau1,te_delay,tr_delay;
double te2=0.0,te3=0.0,te2min,te3min,tau2,tau3,te2_delay,te3_delay=0;
char minte2[MAXSTR],minte3[MAXSTR],spoilflag[MAXSTR];
int sepSliceRephase,sepReadRephase=0,readrev,table,shapeEx;
int i;
/* Real-time variables used in this sequence **************/
int vpe_steps = v1; // Number of PE steps
int vpe_ctr = v2; // PE loop counter
int vms_slices = v3; // Number of slices
int vms_ctr = v4; // Slice loop counter
int vpe_offset = v5; // PE/2 for non-table offset
int vpe_mult = v6; // PE multiplier, ranges from -PE/2 to PE/2
int vper_mult = v7; // PE rewinder multiplier; turn off rewinder when 0
int vssc = v8; // Compressed steady-states
int vacquire = v9; // Argument for setacqvar, to skip steady state acquires
int vrfspoil_ctr = v10; // RF spoil counter
int vrfspoil = v11; // RF spoil multiplier
int vtrimage = v12; // Counts down from nt, trimage delay when 0
int vne = v13; // Number of echoes
int vne_ctr = v14; // Echo loop counter
int vneindex = v15; // Echo index, odd or even
int vnelast = v16; // Check for last echo
int vtrigblock = v17; // Number of slices per trigger block
/* Initialize paramaters **********************************/
init_mri();
getstr("spoilflag",spoilflag);
te2=getval("te2");
te3=getval("te3");
getstr("minte2",minte2);
getstr("minte3",minte3);
readrev=(int)getval("readrev");
/* Check for external PE table ***************************/
table = 0;
if (strcmp(petable,"n") && strcmp(petable,"N") && strcmp(petable,"")) {
loadtable(petable);
table = 1;
}
/* Set Rcvr/Xmtr phase increments for RF Spoiling ********/
/* Ref: Zur, Y., Magn. Res. Med., 21, 251, (1991) *******/
if (rfspoil[0] == 'y') {
rcvrstepsize(rfphase);
obsstepsize(rfphase);
}
/* Initialize gradient structures *************************/
shape_rf(&p1_rf,"p1",p1pat,p1,flip1,rof1,rof2 ); // excitation pulse
init_slice(&ss_grad,"ss",thk); // slice select gradient
init_slice_refocus(&ssr_grad,"ssr"); // slice refocus gradient
init_readout(&ro_grad,"ro",lro,np,sw); // readout gradient
ro_grad.pad1=alfa; ro_grad.pad2=alfa;
init_readout_refocus(&ror_grad,"ror"); // dephase gradient
init_phase(&pe_grad,"pe",lpe,nv); // phase encode gradient
init_dephase(&spoil_grad,"spoil"); // optimized spoiler
init_dephase(&ref_grad,"ref"); // readout rephase
/* RF Calculations ****************************************/
calc_rf(&p1_rf,"tpwr1","tpwr1f");
/* Gradient calculations **********************************/
calc_slice(&ss_grad,&p1_rf,WRITE,"gss");
calc_slice_refocus(&ssr_grad, &ss_grad,WRITE,"gssr");
calc_readout(&ro_grad, WRITE,"gro","sw","at");
calc_readout_refocus(&ror_grad,&ro_grad,NOWRITE,"gror");
calc_phase(&pe_grad, NOWRITE,"gpe","tpe");
calc_dephase(&ref_grad,WRITE,ro_grad.m0,"","");
spoilMoment = ro_grad.acqTime*ro_grad.roamp; // Optimal spoiling is at*gro for 2pi per pixel
spoilMoment -= ro_grad.m0def; // Subtract partial spoiling from back half of readout
calc_dephase(&spoil_grad,WRITE,spoilMoment,"gspoil","tspoil");
/* Is TE long enough for separate slice refocus? ******/
maxgradtime = MAX(ror_grad.duration,pe_grad.duration);
if (spoilflag[0] == 'y')
maxgradtime = MAX(maxgradtime,spoil_grad.duration);
tau1 = ss_grad.rfCenterBack + ssr_grad.duration + maxgradtime + ro_grad.timeToEcho + GRADIENT_RES;
/* Equalize refocus and PE gradient durations *********/
if ((te >= tau1) && (minte[0] != 'y')) {
sepSliceRephase = 1; // Set flag for separate slice rephase
calc_sim_gradient(&ror_grad,&pe_grad,&spoil_grad,tpemin,WRITE);
} else {
sepSliceRephase = 0;
calc_sim_gradient(&ror_grad,&pe_grad,&ssr_grad,tpemin,WRITE);
calc_sim_gradient(&ror_grad,&spoil_grad,&null_grad,tpemin,NOWRITE);
}
perTime = 0.0;
if ((perewind[0] == 'y') || (spoilflag[0] == 'y'))
perTime = spoil_grad.duration;
if (spoilflag[0] == 'n')
spoil_grad.amp = 0.0;
/* Create optional prepulse events ************************/
if (sat[0] == 'y') create_satbands();
if (fsat[0] == 'y') create_fatsat();
if (mt[0] == 'y') create_mtc();
if (ir[0] == 'y') create_inversion_recovery();
/* Set up frequency offset pulse shape list ********/
offsetlist(pss,ss_grad.ssamp,0,freqEx,ns,seqcon[1]);
shapeEx = shapelist(p1_rf.pulseName,ss_grad.rfDuration,freqEx,ns,ss_grad.rfFraction,seqcon[1]);
/* Check that all Gradient calculations are ok ************/
sgl_error_check(sglerror);
/* Min TE ******************************************/
tau1 = ss_grad.rfCenterBack + pe_grad.duration + ro_grad.timeToEcho;
tau1 += (sepSliceRephase) ? ssr_grad.duration : 0.0; // Add slice refocusing if separate event
temin = tau1 + GRADIENT_RES; /* ensure that te_delay is at least GRADIENT_RES */
te = granularity(te,GRADIENT_RES);
if (minte[0] == 'y') {
te = temin;
putvalue("te",te);
}
if (FP_LT(te,temin)) {
abort_message("TE too short. Minimum TE= %.3fms\n",temin*1000);
}
te_delay = te - tau1;
/* Min TE2 *****************************************/
tau2 = (readrev) ? 2*ro_grad.timeFromEcho : ro_grad.duration+ref_grad.duration;
te2min = tau2 + GRADIENT_RES;
te2 = granularity(te2,GRADIENT_RES);
if (minte2[0] == 'y') {
te2 = te2min;
putvalue("te2",te2);
}
if (FP_LT(te2,te2min)) {
abort_message("TE2 too short. Minimum TE2= %.3fms\n",te2min*1000);
}
if (readrev) te2_delay = te2 - tau2;
else {
tau2 = ro_grad.duration + 3*ror_grad.duration;
if (te2 >= tau2) {
sepReadRephase = 1; // Set flag for separate read rephase
te2_delay = te2 - ro_grad.duration - 2*ror_grad.duration;
} else {
sepReadRephase = 0;
if (te2 > te2min+GRADIENT_RES) {
ref_grad.duration = granularity(te2-ro_grad.duration-2*GRADIENT_RES,GRADIENT_RES);
ref_grad.calcFlag = AMPLITUDE_FROM_MOMENT_DURATION;
calc_dephase(&ref_grad,WRITE,ro_grad.m0,"","");
}
te2_delay = te2 - ro_grad.duration - ref_grad.duration;
}
}
/* Min TE3 *****************************************/
if (readrev) {
tau3 = 2*ro_grad.timeToEcho;
te3min = tau3 + GRADIENT_RES;
te3 = granularity(te3,GRADIENT_RES);
if (minte3[0] == 'y') {
te3 = te3min;
putvalue("te3",te3);
}
if (FP_LT(te3,te3min)) {
abort_message("TE3 too short. Minimum TE3= %.3fms\n",te3min*1000);
}
te3_delay = te3 - tau3;
}
/* Now set the TE array accordingly */
putCmd("TE = 0"); /* Re-initialize TE */
putCmd("TE[1] = %f",te*1000);
if (readrev) {
for (i=1;i<ne;i++) {
if (i%2 == 0) putCmd("TE[%d] = TE[%d]+%f",i+1,i,te3*1000);
else putCmd("TE[%d] = TE[%d]+%f",i+1,i,te2*1000);
}
} else {
for (i=1;i<ne;i++) putCmd("TE[%d] = TE[%d]+%f",i+1,i,te2*1000);
}
/* Check nsblock, the number of slices blocked together
(used for triggering and/or inversion recovery) */
check_nsblock();
/* Min TR ******************************************/
trmin = ss_grad.duration + te_delay + pe_grad.duration + ne*ro_grad.duration + perTime + 2*GRADIENT_RES;
trmin += (sepSliceRephase) ? ssr_grad.duration : 0.0; // Add slice refocusing if separate event
if (readrev) trmin += (ne/2)*te2_delay + ((ne-1)/2)*te3_delay;
else trmin += (sepReadRephase) ? (ne-1)*(te2_delay+2*ror_grad.duration) : (ne-1)*(te2_delay+ref_grad.duration);
/* Increase TR if any options are selected *********/
if (sat[0] == 'y') trmin += satTime;
if (fsat[0] == 'y') trmin += fsatTime;
if (mt[0] == 'y') trmin += mtTime;
if (ticks > 0) trmin += GRADIENT_RES;
/* Adjust for all slices ***************************/
trmin *= ns;
/* Inversion recovery *********************************/
if (ir[0] == 'y') {
/* tauti is the additional time beyond IR component to be included in ti */
/* satTime, fsatTime and mtTime all included as those modules will be after IR */
tauti = satTime + fsatTime + mtTime + GRADIENT_RES + ss_grad.rfCenterFront;
/* calc_irTime checks ti and returns the time of all IR components */
trmin += calc_irTime(tauti,trmin,mintr[0],tr,&trtype);
}
if (mintr[0] == 'y') {
tr = trmin;
putvalue("tr",tr);
}
if (FP_LT(tr,trmin)) {
abort_message("TR too short. Minimum TR = %.3fms\n",trmin*1000);
}
/* Calculate tr delay */
tr_delay = granularity((tr-trmin)/ns,GRADIENT_RES);
/* Set pe_steps for profile or full image **********/
pe_steps = prep_profile(profile[0],nv,&pe_grad,&per_grad);
F_initval(pe_steps/2.0,vpe_offset);
/* Shift DDR for pro *******************************/
roff = -poffset(pro,ro_grad.roamp);
/* Adjust experiment time for VnmrJ *********************/
if (ssc<0) {
if (seqcon[2] == 'c') g_setExpTime(trmean*(ntmean*pe_steps*arraydim - ssc*arraydim));
else g_setExpTime(trmean*(ntmean*pe_steps*arraydim - ssc*pe_steps*arraydim));
}
else g_setExpTime(trmean*ntmean*pe_steps*arraydim + tr*ssc);
/* PULSE SEQUENCE ***************************************/
status(A);
rotate();
triggerSelect(trigger); // Select trigger input 1/2/3
obsoffset(resto);
delay(GRADIENT_RES);
initval(fabs(ssc),vssc); // Compressed steady-state counter
if (seqcon[2]=='s') assign(zero,vssc); // Zero for standard peloop
assign(zero,vrfspoil_ctr); // RF spoil phase counter
assign(zero,vrfspoil); // RF spoil multiplier
assign(one,vacquire); // real-time acquire flag
setacqvar(vacquire); // Turn on acquire when vacquire is zero
/* trigger */
if (ticks > 0) F_initval((double)nsblock,vtrigblock);
/* Begin phase-encode loop ****************************/
peloop(seqcon[2],pe_steps,vpe_steps,vpe_ctr);
if (trtype) delay(ns*tr_delay); // relaxation delay
/* Compressed steady-states:
1st array & transient, all arrays if ssc is negative */
if ((ix > 1) && (ssc > 0))
assign(zero,vssc);
sub(vpe_ctr,vssc,vpe_ctr); // vpe_ctr counts up from -ssc
assign(zero,vssc);
if (seqcon[2] == 's')
assign(zero,vacquire); // Always acquire for non-compressed loop
else {
ifzero(vpe_ctr);
assign(zero,vacquire); // Start acquiring when vpe_ctr reaches zero
endif(vpe_ctr);
}
/* Set rcvr/xmtr phase for RF spoiling *******************/
if (rfspoil[0] == 'y') {
incr(vrfspoil_ctr); // vrfspoil_ctr = 1 2 3 4 5 6
add(vrfspoil,vrfspoil_ctr,vrfspoil); // vrfspoil = 1 3 6 10 15 21
xmtrphase(vrfspoil);
rcvrphase(vrfspoil);
}
/* Read external kspace table if set ******************/
if (table)
getelem(t1,vpe_ctr,vpe_mult);
else {
ifzero(vacquire);
sub(vpe_ctr,vpe_offset,vpe_mult);
elsenz(vacquire);
sub(zero,vpe_offset,vpe_mult); // Hold PE mult at initial value for steady states
endif(vacquire);
}
/* PE rewinder follows PE table; zero if turned off ***/
if (perewind[0] == 'y') assign(vpe_mult,vper_mult);
else assign(zero,vper_mult);
/* Begin multislice loop ******************************/
msloop(seqcon[1],ns,vms_slices,vms_ctr);
if (!trtype) delay(tr_delay); // Relaxation delay
if (ticks > 0) {
modn(vms_ctr,vtrigblock,vtest);
ifzero(vtest); // if the beginning of an trigger block
xgate(ticks);
grad_advance(gpropdelay);
delay(GRADIENT_RES);
elsenz(vtest);
delay(GRADIENT_RES);
endif(vtest);
}
/* TTL scope trigger **********************************/
sp1on(); delay(GRADIENT_RES); sp1off();
/* Prepulse options ***********************************/
if (ir[0] == 'y') inversion_recovery();
if (sat[0] == 'y') satbands();
if (fsat[0] == 'y') fatsat();
if (mt[0] == 'y') mtc();
/* Slice select RF pulse ******************************/
obspower(p1_rf.powerCoarse);
obspwrf(p1_rf.powerFine);
delay(GRADIENT_RES);
obl_shapedgradient(ss_grad.name,ss_grad.duration,0,0,ss_grad.amp,NOWAIT);
delay(ss_grad.rfDelayFront);
shapedpulselist(shapeEx,ss_grad.rfDuration,oph,rof1,rof2,seqcon[1],vms_ctr);
delay(ss_grad.rfDelayBack);
/* Phase encode, refocus, and dephase gradient ********/
if (sepSliceRephase) { // separate slice refocus gradient
obl_shapedgradient(ssr_grad.name,ssr_grad.duration,0,0,-ssr_grad.amp,WAIT);
delay(te_delay); // delay between slab refocus and pe
pe_shapedgradient(pe_grad.name,pe_grad.duration,-ror_grad.amp,0,0,
-pe_grad.increment,vpe_mult,WAIT);
} else {
pe_shapedgradient(pe_grad.name,pe_grad.duration,-ror_grad.amp,0,-ssr_grad.amp,
-pe_grad.increment,vpe_mult,WAIT);
delay(te_delay); // delay after refocus/pe
}
F_initval(ne,vne);
loop(vne,vne_ctr);
if (readrev) {
mod2(vne_ctr,vneindex);
ifzero(vneindex);
/* Shift DDR for pro *******************************/
roff = -poffset(pro,ro_grad.roamp);
/* Readout gradient ********************************/
obl_shapedgradient(ro_grad.name,ro_grad.duration,ro_grad.amp,0,0,NOWAIT);
delay(ro_grad.atDelayFront-alfa);
/* Acquisition ***************************************/
startacq(alfa);
acquire(np,1.0/sw);
delay(ro_grad.atDelayBack);
endacq();
sub(vne,vne_ctr,vnelast);
sub(vnelast,one,vnelast);
ifzero(vnelast);
elsenz(vnelast);
delay(te2_delay);
endif(vnelast);
elsenz(vneindex);
/* Shift DDR for pro *******************************/
roff = -poffset(pro,-ro_grad.roamp);
/* Readout gradient ********************************/
obl_shapedgradient(ro_grad.name,ro_grad.duration,-ro_grad.amp,0,0,NOWAIT);
delay(ro_grad.atDelayFront-alfa);
/* Acquisition ***************************************/
startacq(alfa);
acquire(np,1.0/sw);
delay(ro_grad.atDelayBack);
endacq();
sub(vne,vne_ctr,vnelast);
sub(vnelast,one,vnelast);
ifzero(vnelast);
elsenz(vnelast);
delay(te3_delay);
endif(vnelast);
endif(vneindex);
} else {
/* Shift DDR for pro *******************************/
roff = -poffset(pro,ro_grad.roamp);
/* Readout gradient ********************************/
obl_shapedgradient(ro_grad.name,ro_grad.duration,ro_grad.amp,0,0,NOWAIT);
delay(ro_grad.atDelayFront-alfa);
/* Acquisition ***************************************/
startacq(alfa);
acquire(np,1.0/sw);
delay(ro_grad.atDelayBack);
endacq();
sub(vne,vne_ctr,vnelast);
sub(vnelast,one,vnelast);
ifzero(vnelast);
elsenz(vnelast);
if (sepReadRephase) {
obl_shapedgradient(ror_grad.name,ror_grad.duration,-ror_grad.amp,0,0,WAIT);
delay(te2_delay);
obl_shapedgradient(ror_grad.name,ror_grad.duration,-ror_grad.amp,0,0,WAIT);
} else {
obl_shapedgradient(ref_grad.name,ref_grad.duration,-ref_grad.amp,0,0,WAIT);
delay(te2_delay);
}
endif(vnelast);
}
endloop(vne_ctr);
/* Rewind / spoiler gradient **************************/
if ((perewind[0] == 'y') || (spoilflag[0] == 'y')) {
pe_shapedgradient(pe_grad.name,pe_grad.duration,spoil_grad.amp,0,0,pe_grad.increment,vper_mult,WAIT);
}
endmsloop(seqcon[1],vms_ctr);
endpeloop(seqcon[2],vpe_ctr);
/* Inter-image delay **********************************/
sub(ntrt,ct,vtrimage);
decr(vtrimage);
ifzero(vtrimage);
delay(trimage);
endif(vtrimage);
}
pulsesequence()
{
/* declaration of SGL kernel structures */
SGL_KERNEL_INFO_T read, phase, slice, ss_pre, ss_post;
/* declaration of internal variables */
double freqlist[MAXNSLICE];
double pe_steps;
int shapelist1, table;
double xtime, grad_duration, ror_pad,rod_pad;
double temp_tr;
double readAmp, phaseAmp, sliceAmp;
double tepad, tepad2, temin2, htrmin, delayToRF, delayRFToAcq, delayAcqToRF;
double rof_pad, delRof;
double sliceRephTrim, sliceDephTrim;
double readRephTrim, readDephTrim;
int rfPhase[2] = {0,2};
/* declaration of realtime variables */
int vpe_steps = v1;
int vpe_ctr = v2;
int vms_slices = v3;
int vms_ctr = v4;
int vpe_offset = v5;
int vpe_index = v6;
int vss = v7;
int vssc = v8;
int vacquire = v9;
int vphase = v10;
settable(t2,2,rfPhase);
/* setup phase encoding order */
table = set_pe_order();
init_mri();
if( (sliceRephTrim = getvalnwarn("sliceRephTrim")) == 0.0 ) {
sliceRephTrim = 1.0;
}
if( (sliceDephTrim = getvalnwarn("sliceDephTrim")) == 0.0 ) {
sliceDephTrim = 1.0;
}
if( (readRephTrim = getvalnwarn("readRephTrim")) == 0.0 ) {
readRephTrim = 1.0;
}
if( (readDephTrim = getvalnwarn("readDephTrim")) == 0.0 ) {
readDephTrim = 1.0;
}
shape_rf( &p1_rf, "p1", p1pat, p1, flip1, rof1, rof2 ); // excitation pulse
init_slice( &ss_grad, "ss", thk ); // slice gradient
init_slice_refocus( &ssr_grad, "ssr" ); // slice refocus
init_slice_refocus( &ssd_grad, "ssd" ); // slice refocus
init_readout( &ro_grad, "ro", lro, np, sw ); // read gradient
init_readout_refocus( &ror_grad, "ror" ); // read dephase
init_readout_refocus( &rod_grad, "ror" ); // read dephase
init_phase( &pe_grad, "pe", lpe, nv ); // phase gradient
ss_grad.maxGrad = gmax * 0.57;
ssr_grad.maxGrad = gmax * 0.57;
ssd_grad.maxGrad = gmax * 0.57;
ro_grad.maxGrad = gmax * 0.57;
ror_grad.maxGrad = gmax * 0.57;
rod_grad.maxGrad = gmax * 0.57;
pe_grad.maxGrad = glimpe < 0.57? gmax*glimpe : gmax * 0.57;
/* calculate the RF pulses, gradient pulses and their interdependencies */
calc_rf( &p1_rf, "tpwr1", "tpwr1f" );
calc_slice( &ss_grad, &p1_rf, NOWRITE, "gss" );
ssr_grad.amp = ss_grad.amp;
ssr_grad.gmult = sliceRephTrim;
ssr_grad.calcFlag = DURATION_FROM_MOMENT_AMPLITUDE;
calc_slice_refocus( &ssr_grad, &ss_grad, NOWRITE, "gssr" );
ssd_grad.amp = ss_grad.amp;
ssd_grad.gmult = sliceDephTrim;
ssd_grad.calcFlag = DURATION_FROM_MOMENT_AMPLITUDE;
calc_slice_dephase( &ssd_grad, &ss_grad, NOWRITE, "gssd" );
calc_readout( &ro_grad, NOWRITE, "gro", "sw", "at" );
ror_grad.amp = ro_grad.amp;
ror_grad.calcFlag = DURATION_FROM_MOMENT_AMPLITUDE;
rod_grad.amp = ro_grad.amp;
rod_grad.calcFlag = DURATION_FROM_MOMENT_AMPLITUDE;
ror_grad.gmult = readRephTrim;
calc_readout_refocus( &ror_grad, &ro_grad, NOWRITE, "gror" );
rod_grad.gmult = readDephTrim;
calc_readout_rephase( &rod_grad, &ro_grad, NOWRITE, "grod" );
calc_phase( &pe_grad, NOWRITE, "gpe", "tpe" );
/* work out the position of the markers */
/* markerA */
/* ss_grad.rfDelayFront indicates the starting point of the
RF pulse measured from the start of the slice gradient
( rof1:pulse length:rof2 ) */
double granulatedRFDelayFront = granularity( ss_grad.rfDelayFront, GRADIENT_RES );
if( granulatedRFDelayFront > ss_grad.rfDelayFront ) {
granulatedRFDelayFront -= GRADIENT_RES;
}
/* ss_grad.rfDelayBack indicates the end point of the
RF pulse measured to the end of the slice gradient
( rof1:pulse length:rof2 ) */
double granulatedRFDelayBack = granularity( ss_grad.rfDelayBack, GRADIENT_RES );
if( granulatedRFDelayBack > ss_grad.rfDelayBack ) {
granulatedRFDelayBack -= GRADIENT_RES;
}
double granulatedRFDelay = granulatedRFDelayFront < granulatedRFDelayBack ? granulatedRFDelayFront : granulatedRFDelayBack;
double markerADelay = granulatedRFDelay;
/* read and phase gradients can overlap the start or end of the slice gradient by max of granulatedRFDElay */
double granulatedATDelayFront = granularity(ro_grad.atDelayFront, GRADIENT_RES);
if( granulatedATDelayFront > ro_grad.atDelayFront ) {
granulatedATDelayFront -= GRADIENT_RES;
}
double granulatedATDelayBack = granularity(ro_grad.atDelayBack, GRADIENT_RES);
if( granulatedATDelayBack > ro_grad.atDelayBack ) {
granulatedATDelayBack -= GRADIENT_RES;
}
double granulatedATDelay = granulatedATDelayFront < granulatedATDelayBack ? granulatedATDelayFront : granulatedATDelayBack;
/* longest gradient between RF pulse and acquire dominates */
xtime = ssr_grad.duration + granulatedRFDelay;
xtime = xtime > ssd_grad.duration + granulatedRFDelay ? xtime : ssd_grad.duration + granulatedRFDelay;
xtime = xtime > ror_grad.duration + granulatedATDelay ? xtime : ror_grad.duration + granulatedATDelay;
xtime = xtime > rod_grad.duration + granulatedATDelay ? xtime : rod_grad.duration + granulatedATDelay;
xtime = xtime > pe_grad.duration ? xtime : pe_grad.duration;
ror_pad = xtime - ror_grad.duration - granulatedATDelay;
rod_pad = xtime - rod_grad.duration - granulatedATDelay;
/* make a gradient list */
start_kernel( &sk );
add_gradient( (void*)&ss_grad, "slice", SLICE, START_TIME, "", 0.0, PRESERVE );
add_gradient( (void*)&ssr_grad, "sliceReph", SLICE, BEHIND, "slice", 0.0, INVERT );
add_gradient( (void*)&ror_grad, "readDeph", READ, BEHIND, "slice", -granulatedRFDelay + ror_pad, INVERT );
add_gradient( (void*)&ro_grad, "read", READ, BEHIND, "readDeph", 0.0, PRESERVE );
add_gradient( (void*)&pe_grad, "phase", PHASE, SAME_START, "readDeph", 0.0, PRESERVE );
add_gradient( (void*)&rod_grad, "readReph", READ, BEHIND, "read", 0.0, INVERT );
add_gradient( (void*)&pe_grad, "rewind", PHASE, SAME_END, "readReph", 0.0, INVERT );
add_gradient( (void*)&ss_grad, "nextSlice", SLICE, BEHIND, "readReph", rod_pad - granulatedRFDelay, PRESERVE );
add_gradient( (void*)&ssd_grad, "sliceDeph", SLICE, BEFORE, "nextSlice", 0, INVERT );
add_marker( "markerA", SAME_START, "slice", granulatedRFDelay );
add_marker( "markerB", SAME_START, "nextSlice", granulatedRFDelay );
/* get the minimum echo time */
temin = get_timing( FROM_RF_CENTER_OF, "slice", TO_ECHO_OF, "read" );
temin2 = get_timing( FROM_ECHO_OF, "read", TO_RF_CENTER_OF, "nextSlice" );
htrmin = MAX( temin, temin2 );
if( minte[0] == 'y' ){
te = htrmin;
}
tepad = granularity( te - temin, GRADIENT_RES );
tepad2 = granularity( te - temin2, GRADIENT_RES );
te = temin + tepad;
putCmd("setvalue('te', %f, 'current')\n", te );
if( tepad>0.0 ) change_timing( "readDeph", tepad );
if( tepad2>0.0 ) change_timing( "nextSlice", tepad2 );
tr = get_timing( FROM_START_OF, "slice", TO_START_OF, "nextSlice" );
putvalue("tr", tr );
delayRFToAcq = get_timing( FROM_RF_PULSE_OF, "slice", TO_ACQ_OF, "read" );
delayAcqToRF = get_timing( FROM_ACQ_OF, "read", TO_RF_PULSE_OF, "nextSlice" );
set_comp_info( &ss_pre, "ss_pre" );
write_comp_grads_snippet( NULL, NULL, &ss_pre, "START_OF_KERNEL", "markerA" );
set_comp_info( &read, "ro" );
set_comp_info( &phase, "pe" );
set_comp_info( &slice, "ss" );
write_comp_grads_snippet( &read, &phase, &slice, "markerA", "markerB" );
set_comp_info( &ss_post, "ss_post" );
write_comp_grads_snippet( NULL, NULL, &ss_post, "markerB", "END_OF_KERNEL" );
/* Set up frequency offset pulse shape list ********/
offsetlist(pss,ss_grad.ssamp,0,freqlist,ns,seqcon[1]);
shapelist1 = shapelist(p1_rf.pulseName,ss_grad.rfDuration,freqlist,ns,ss_grad.rfFraction, seqcon[1]);
/* Set pe_steps for profile or full image **********/
pe_steps = prep_profile(profile[0],nv,&pe_grad,&pe_grad);/* profile[0] is n y or r */
F_initval(pe_steps/2.0,vpe_offset);
g_setExpTime(trmean*(ntmean*pe_steps*arraydim + (1+fabs(ssc))*arraydim));
/* Shift DDR for pro *******************************/
roff = -poffset(pro,ro_grad.roamp);
/* PULSE SEQUENCE */
status( A );
rotate();
triggerSelect(trigger);
obsoffset( resto );
delay( GRADIENT_RES );
initval( 1+fabs( ssc ), vss );
obspower( p1_rf.powerCoarse );
obspwrf( p1_rf.powerFine );
delay( GRADIENT_RES );
assign(one,vacquire); // real-time acquire flag
setacqvar(vacquire); // Turn on acquire when vacquire is zero
obl_shapedgradient(ss_pre.name,ss_pre.dur,0,0,ss_pre.amp,NOWAIT);
sp1on();
delay(GRADIENT_RES);
sp1off();
delay(ss_pre.dur-GRADIENT_RES );
msloop( seqcon[1], ns, vms_slices, vms_ctr );
assign(vss,vssc);
peloop( seqcon[2], pe_steps, vpe_steps, vpe_ctr );
sub(vpe_ctr,vssc,vpe_ctr); // vpe_ctr counts up from -ssc
assign(zero,vssc);
if (seqcon[2] == 's')
assign(zero,vacquire); // Always acquire for non-compressed loop
else {
ifzero(vpe_ctr);
assign(zero,vacquire); // Start acquiring when vpe_ctr reaches zero
endif(vpe_ctr);
}
if (table)
getelem(t1,vpe_ctr,vpe_index);
else {
ifzero(vacquire);
sub(vpe_ctr,vpe_offset,vpe_index);
elsenz(vacquire);
sub(zero,vpe_offset,vpe_index);
endif(vacquire);
}
pe_shaped3gradient( read.name, phase.name, slice.name,
read.dur, read.amp, 0, slice.amp,
-pe_grad.increment, vpe_index, NOWAIT );
delay(ss_grad.rfDelayFront - granulatedRFDelay);
shapedpulselist( shapelist1, ss_grad.rfDuration, oph, rof1, rof2, seqcon[1], vms_ctr );
delay( delayRFToAcq - alfa );
startacq(alfa);
acquire( np, 1/ro_grad.bandwidth );
endacq();
delay( delayAcqToRF - ss_grad.rfDelayFront + granulatedRFDelay - GRADIENT_RES );
sp1on();
delay(GRADIENT_RES);
sp1off();
endpeloop( seqcon[2], vpe_ctr );
endmsloop( seqcon[1], vms_ctr );
obl_shapedgradient(ss_post.name,ss_post.dur,0,0,ss_post.amp,WAIT);
}
pulsesequence() {
// Define Variables and Objects and Get Parameter Values
double aYxy8 = getval("aYxy8");
double pwYxy8 = getval("pwYxy8");
double nYxy8 = getval("nYxy8");
int cycles = (int) nYxy8/2.0;
nYxy8 = 2.0*cycles;
int counter = (int) (nYxy8 - 1.0);
initval((nYxy8 - 1.0),v8);
double onYxy8 = getval("onYxy8");
double srate = getval("srate");
DSEQ dec = getdseq("H");
strncpy(dec.t.ch,"dec",3);
putCmd("chHtppm='dec'\n");
strncpy(dec.s.ch,"dec",3);
putCmd("chHspinal='dec'\n");
DSEQ mix = getdseq("Hmix");
strncpy(mix.t.ch,"dec",3);
putCmd("chHmixtppm='mix'\n");
strncpy(mix.s.ch,"dec",3);
putCmd("chHmixspinal='mix'\n");
//--------------------------------------
// Copy Current Parameters to Processed
//-------------------------------------
putCmd("groupcopy('current','processed','acquisition')");
// Dutycycle Protection
DUTY d = init_dutycycle();
d.dutyon = getval("pwX90") + 4.0*nYxy8*pwYxy8 + getval("pwX180");
d.dutyoff = d1 + 4.0e-6;
d.c1 = d.c1 + (!strcmp(dec.seq,"tppm"));
d.c1 = d.c1 + ((!strcmp(dec.seq,"tppm")) && (dec.t.a > 0.0));
d.t1 = getval("rd") + getval("ad") + at;
d.c2 = d.c2 + (!strcmp(dec.seq,"spinal"));
d.c2 = d.c2 + ((!strcmp(dec.seq,"spinal")) && (dec.s.a > 0.0));
d.t2 = getval("rd") + getval("ad") + at;
d.c3 = d.c3 + (!strcmp(mix.seq,"tppm"));
d.c3 = d.c3 + ((!strcmp(mix.seq,"tppm")) && (mix.t.a > 0.0));
d.t3 = 2.0*nYxy8*(1.0/srate - 2.0*pwYxy8) + 1.0/srate - getval("pwX180");
d.c4 = d.c4 + (!strcmp(mix.seq,"spinal"));
d.c4 = d.c4 + ((!strcmp(mix.seq,"spinal")) && (mix.s.a > 0.0));
d.t4 = 2.0*nYxy8*(1.0/srate - 2.0*pwYxy8) + 1.0/srate - getval("pwX180");
d = update_dutycycle(d);
abort_dutycycle(d,10.0);
// Set Phase Tables
settable(phX90,4,table1);
settable(ph1Yxy8,8,table2);
settable(ph2Yxy8,4,table3);
settable(phX180,4,table4);
settable(phRec,4,table5);
if (counter < 0) tsadd(phRec,2,4);
setreceiver(phRec);
// Begin Sequence
txphase(phX90); decphase(zero);
obspwrf(getval("aX90"));
obsunblank(); decunblank(); _unblank34();
delay(d1);
sp1on(); delay(2.0e-6); sp1off(); delay(2.0e-6);
// X Single Pulse
rgpulse(getval("pwX90"),phX90,0.0,0.0);
// xy8Y Period One
obspwrf(getval("aX180"));
txphase(phX180);
if (counter >= 0) {
_dseqon(mix);
delay(pwYxy8/2.0);
dec2pwrf(aYxy8);
sub(v1,v1,v1);
if (counter >= 1) {
if (counter > 1) loop(v8,v9);
getelem(ph1Yxy8,v1,v4);
incr(v1);
getelem(ph2Yxy8,ct,v2);
add(v4,v2,v2);
dec2phase(v2);
delay(0.5/srate - pwYxy8);
if (onYxy8 == 2)
dec2rgpulse(pwYxy8,v2,0.0,0.0);
else
delay(pwYxy8);
if (counter > 1) endloop(v9);
}
// X Refocussing Pulse
delay(0.5/srate - pwYxy8/2.0 - getval("pwX180")/2.0);
rgpulse(getval("pwX180"),phX180,0.0,0.0);
dec2pwrf(aYxy8);
delay(0.5/srate - pwYxy8/2.0 - getval("pwX180")/2.0);
// xy8Y Period Two
if (counter >= 1) {
if (counter > 1) loop(v8,v9);
if (onYxy8 == 2)
dec2rgpulse(pwYxy8,v2,0.0,0.0);
else
delay(pwYxy8);
getelem(ph1Yxy8,v1,v4);
incr(v1);
getelem(ph2Yxy8,ct,v2);
add(v4,v2,v2);
dec2phase(v2);
delay(0.5/srate - pwYxy8);
if (counter > 1) endloop(v9);
}
delay(pwYxy8/2.0);
_dseqoff(mix);
}
// Begin Acquisition
_dseqon(dec);
obsblank(); _blank34();
delay(getval("rd"));
startacq(getval("ad"));
acquire(np, 1/sw);
endacq();
_dseqoff(dec);
obsunblank(); decunblank(); _unblank34();
}
pulsesequence() {
/* Internal variable declarations *************************/
int shapelist90,shapelist180,shapelistIR;
double nseg;
double seqtime,tau1,tau2,tau3,
te1_delay,te2_delay,te3_delay,
iti_delay, ti_delay,
tr_delay;
double kzero;
double freq90[MAXNSLICE], freq180[MAXNSLICE], freqIR[MAXNSLICE];
/* Real-time variables used in this sequence **************/
int vpe_ctr = v2; // PE loop counter
int vpe_mult = v3; // PE multiplier, ranges from -PE/2 to PE/2
int vms_slices = v4; // Number of slices
int vms_ctr = v5; // Slice loop counter
int vseg = v6; // Number of ETL segments
int vseg_ctr = v7; // Segment counter
int vetl = v8; // Echo train length
int vetl_ctr = v9; // Echo train loop counter
int vssc = v10; // Compressed steady-states
int vtrimage = v11; // Counts down from nt, trimage delay when 0
int vacquire = v12; // Argument for setacqvar, to skip steady state acquires
int vphase180 = v13; // phase of 180 degree refocusing pulse
/* Initialize paramaters **********************************/
init_mri();
/* Load external PE table ********************************/
if (strcmp(petable,"n") && strcmp(petable,"N") && strcmp(petable,"")) {
loadtable(petable);
} else {
abort_message("petable undefined");
}
seqtime = 0.0;
espmin = 0.0;
kzero = getval("kzero");
/* RF Power & Bandwidth Calculations **********************/
init_rf(&p1_rf,p1pat,p1,flip1,rof1,rof2);
init_rf(&p2_rf,p2pat,p2,flip2,rof1,rof2);
calc_rf(&p1_rf,"tpwr1","tpwr1f");
calc_rf(&p2_rf,"tpwr2","tpwr2f");
/* Initialize gradient structures *************************/
init_readout_butterfly(&ro_grad,"ro",lro,np,sw,gcrushro,tcrushro);
init_readout_refocus(&ror_grad,"ror");
init_phase(&pe_grad,"pe",lpe,nv);
init_slice(&ss_grad,"ss",thk); /* NOTE assume same band widths for p1 and p2 */
init_slice_butterfly(&ss2_grad,"ss2",thk,gcrush,tcrush);
init_slice_refocus(&ssr_grad,"ssr");
/* Gradient calculations **********************************/
calc_readout(&ro_grad,WRITE,"gro","sw","at");
calc_readout_refocus(&ror_grad,&ro_grad,NOWRITE,"gror");
calc_phase(&pe_grad,WRITE,"gpe","tpe");
calc_slice(&ss_grad,&p1_rf,WRITE,"gss");
calc_slice(&ss2_grad,&p1_rf,WRITE,"");
calc_slice_refocus(&ssr_grad,&ss_grad,NOWRITE,"gssr");
/* Equalize refocus and PE gradient durations *************/
calc_sim_gradient(&ror_grad,&null_grad,&ssr_grad,0.0,WRITE);
/* Create optional prepulse events ************************/
if (sat[0] == 'y') create_satbands();
if (fsat[0] == 'y') create_fatsat();
if (mt[0] == 'y') create_mtc();
if (ir[0] == 'y') {
init_rf(&ir_rf,pipat,pi,flipir,rof1,rof2);
calc_rf(&ir_rf,"tpwri","tpwrif");
init_slice_butterfly(&ssi_grad,"ssi",thk,gcrushir,tcrushir);
calc_slice(&ssi_grad,&ir_rf,WRITE,"gssi");
}
/* Set up frequency offset pulse shape list ********/
offsetlist(pss,ss_grad.ssamp, 0,freq90, ns,seqcon[1]);
offsetlist(pss,ss2_grad.ssamp,0,freq180,ns,seqcon[1]);
offsetlist(pss,ssi_grad.ssamp,0,freqIR, ns,seqcon[1]);
shapelist90 = shapelist(p1pat,ss_grad.rfDuration, freq90, ns,0,seqcon[1]);
shapelist180 = shapelist(p2pat,ss2_grad.rfDuration,freq180,ns,0,seqcon[1]);
shapelistIR = shapelist(pipat,ssi_grad.rfDuration,freqIR, ns,0,seqcon[1]);
/* same slice selection gradient and RF pattern used */
if (ss_grad.rfFraction != 0.5)
abort_message("ERROR %s: RF pulse must be symmetric (RF fraction = %.2f)",
seqfil,ss_grad.rfFraction);
if (ro_grad.echoFraction != 1)
abort_message("ERROR %s: Echo Fraction must be 1",seqfil);
/* Find sum of all events in each half-echo period ********/
tau1 = ss_grad.rfCenterBack + ssr_grad.duration + ss2_grad.rfCenterFront;
tau2 = ss2_grad.rfCenterBack + pe_grad.duration + ro_grad.timeToEcho;
tau3 = ro_grad.timeFromEcho + pe_grad.duration + ss2_grad.rfCenterFront;
espmin = 2*MAX(MAX(tau1,tau2),tau3); // Minimum echo spacing
if (minesp[0] == 'y') {
esp = espmin + 8e-6; // ensure at least 4us delays in both TE periods
putvalue("esp",esp);
}
else if (((espmin+8e-6)-esp) > 12.5e-9) {
abort_message("ERROR %s: Echo spacing too small, minimum is %.2fms\n",seqfil,(espmin+8e-6)*1000);
}
te1_delay = esp/2.0 - tau1; // Intra-esp delays
te2_delay = esp/2.0 - tau2;
te3_delay = esp/2.0 - tau3;
te = kzero*esp; // Return effective TE
putvalue("te",te);
/* Minimum TR **************************************/
/* seqtime is total time per slice */
seqtime = 2*4e-6 + ss_grad.rfCenterFront + etl*esp + ro_grad.timeFromEcho + pe_grad.duration + te3_delay;
/* Increase TR if any options are selected****************/
if (sat[0] == 'y') seqtime += ns*satTime;
if (fsat[0] == 'y') seqtime += ns*fsatTime;
if (mt[0] == 'y') seqtime += ns*mtTime;
if (ir[0] == 'y') {
/* Inter-IR delay */
if (ns > 1)
iti_delay = seqtime - ssi_grad.duration;
/* it is probably safe to assume that seqtime is always > the pulse widths */
else
iti_delay = 0;
/* Inversion Recovery */
timin = ssi_grad.rfCenterBack + ss_grad.rfCenterFront;
timin += 8e-6; // from sp1on/off and after 90 pulse power setting
timin += seqtime*(ns-1) + iti_delay;
if (ti < timin + 4e-6) // ensure at least a 4us delay
abort_message("%s: ti too short, minimum is %.2fms",seqfil,timin*1000);
/* Delay after the last IR pulse */
ti_delay = ti - timin;
/* force all slices to be acquired back-to-back, with a single TR delay at end */
trtype = 1;
}
else {
iti_delay = ti_delay = 0;
}
trmin = ns*(seqtime + 4e-6);
if (ir[0] == 'y') {
trmin += (4e-6 + ssi_grad.rfCenterFront + ti);
}
if (mintr[0] == 'y'){
tr = trmin;
putvalue("tr",tr);
}
if ((trmin-tr) > 12.5e-9) {
abort_message("TR too short. Minimum TR = %.2fms\n",trmin*1000);
}
tr_delay = (tr - trmin)/ns;
/* Set number of segments for profile or full image **********/
nseg = prep_profile(profile[0],nv/etl,&pe_grad,&per_grad);
/* Shift DDR for pro *******************************/
roff = -poffset(pro,ro_grad.roamp);
/* Calculate total acquisition time */
g_setExpTime(tr*(nt*nseg*getval("arraydim") + ssc) + trimage*getval("arraydim"));
/* Return parameters to VnmrJ */
putvalue("rgss",ss_grad.tramp); //90 slice ramp
if (ss2_grad.enableButterfly) { //180 slice ramps
putvalue("rcrush",ss2_grad.crusher1RampToCrusherDuration);
putvalue("rgss2",ss2_grad.crusher1RampToSsDuration);
}
else {
putvalue("rgss2",ss2_grad.tramp);
}
if (ro_grad.enableButterfly) {
putvalue("rgro",ro_grad.crusher1RampToSsDuration);
}
else {
putvalue("rgro",ro_grad.tramp); //RO ramp
}
putvalue("tror",ror_grad.duration); //ROR duration
putvalue("rgror",ror_grad.tramp); //ROR ramp
putvalue("gpe",pe_grad.peamp); //PE max amp
putvalue("gss",ss_grad.ssamp);
putvalue("gro",ro_grad.roamp);
/* PULSE SEQUENCE *************************************/
initval(fabs(ssc),vssc); // Compressed steady-state counter
assign(one,vacquire); // real-time acquire flag
/* Phase cycle: Alternate 180 phase to cancel residual FID */
mod2(ct,vphase180); // 0101
dbl(vphase180,vphase180); // 0202
add(vphase180,one,vphase180); // 1313 Phase difference from 90
add(vphase180,oph,vphase180);
obsoffset(resto);
delay(4e-6);
initval(nseg,vseg);
loop(vseg,vseg_ctr);
/* TTL scope trigger **********************************/
sp1on(); delay(4e-6); sp1off();
/* Compressed steady-states: 1st array & transient, all arrays if ssc is negative */
if ((ix > 1) && (ssc > 0))
assign(zero,vssc);
sub(vseg_ctr,vssc,vseg_ctr); // vpe_ctr counts up from -ssc
assign(zero,vssc);
ifzero(vseg_ctr);
assign(zero,vacquire); // Start acquiring when vseg_ctr reaches zero
endif(vseg_ctr);
setacqvar(vacquire); // Turn on acquire when vacquire is zero
if (ticks) {
xgate(ticks);
grad_advance(gpropdelay);
delay(4e-6);
}
if(ir[0] == 'y') { /* IR for all slices prior to data acquisition */
obspower(ir_rf.powerCoarse);
obspwrf(ir_rf.powerFine);
delay(4e-6);
msloop(seqcon[1],ns,vms_slices,vms_ctr);
obl_shapedgradient(ssi_grad.name,ssi_grad.duration,0,0,ssi_grad.amp,NOWAIT);
delay(ssi_grad.rfDelayFront);
shapedpulselist(shapelistIR,ssi_grad.rfDuration,oph,rof1,rof2,seqcon[1],vms_ctr);
delay(ssi_grad.rfDelayBack);
delay(iti_delay);
endmsloop(seqcon[1],vms_ctr);
delay(ti_delay);
}
msloop(seqcon[1],ns,vms_slices,vms_ctr);
/* Prepulse options ***********************************/
if (sat[0] == 'y') satbands();
if (fsat[0] == 'y') fatsat();
if (mt[0] == 'y') mtc();
/* 90 degree pulse ************************************/
rotate();
obspower(p1_rf.powerCoarse);
obspwrf(p1_rf.powerFine);
delay(4e-6);
obl_shapedgradient(ss_grad.name,ss_grad.duration,0,0,ss_grad.amp,NOWAIT);
delay(ss_grad.rfDelayFront);
shapedpulselist(shapelist90,ss_grad.rfDuration,oph,rof1,rof2,seqcon[1],vms_ctr);
delay(ss_grad.rfDelayBack);
/* Read dephase and Slice refocus *********************/
obl_shapedgradient(ssr_grad.name,ssr_grad.duration,ror_grad.amp,0.0,-ssr_grad.amp,WAIT);
/* First half-TE delay ********************************/
obspower(p2_rf.powerCoarse);
obspwrf(p2_rf.powerFine);
delay(te1_delay);
peloop(seqcon[2],etl,vetl,vetl_ctr);
mult(vseg_ctr,vetl,vpe_ctr);
add(vpe_ctr,vetl_ctr,vpe_ctr);
getelem(t1,vpe_ctr,vpe_mult);
/* 180 degree pulse *******************************/
/* Note, ss2_grad.amp is max gradient for butterfly shape; flat top = _.ssamp */
obl_shapedgradient(ss2_grad.name,ss2_grad.duration,0,0,ss2_grad.amp,NOWAIT);
delay(ss2_grad.rfDelayFront);
shapedpulselist(shapelist180,ss2_grad.rfDuration,vphase180,rof1,rof2,seqcon[1],vms_ctr);
delay(ss2_grad.rfDelayBack);
/* Phase-encode gradient ******************************/
pe_shapedgradient(pe_grad.name,pe_grad.duration,0,0,0,-pe_grad.increment,vpe_mult,WAIT);
/* Second half-TE period ******************************/
delay(te2_delay);
/* Readout gradient ************************************/
obl_shapedgradient(ro_grad.name,ro_grad.duration,ro_grad.amp,0,0,NOWAIT);
delay(ro_grad.atDelayFront);
/* Acquire data ****************************************/
startacq(alfa);
acquire(np,1.0/sw);
endacq();
delay(ro_grad.atDelayBack);
/* Rewinding phase-encode gradient ********************/
/* Phase encode, refocus, and dephase gradient ******************/
pe_shapedgradient(pe_grad.name,pe_grad.duration,0,0,0,pe_grad.increment,vpe_mult,WAIT);
/* Second half-TE delay *******************************/
delay(te3_delay);
endpeloop(seqcon[2],vetl_ctr);
/* Relaxation delay ***********************************/
if (!trtype)
delay(tr_delay);
endmsloop(seqcon[1],vms_ctr);
if (trtype)
delay(ns*tr_delay);
endloop(vseg_ctr);
/* Inter-image delay **********************************/
sub(ntrt,ct,vtrimage);
decr(vtrimage);
ifzero(vtrimage);
delay(trimage);
endif(vtrimage);
}
pulsesequence() {
// Define Variables and Objects and Get Parameter Values
CP hx = getcp("HX",0.0,0.0,0,1);
strncpy(hx.fr,"dec",3);
strncpy(hx.to,"obs",3);
putCmd("frHX='dec'\n");
putCmd("toHX='obs'\n");
DSEQ dec = getdseq("H");
strncpy(dec.t.ch,"dec",3);
putCmd("chHtppm='dec'\n");
strncpy(dec.s.ch,"dec",3);
putCmd("chHspinal='dec'\n");
//--------------------------------------
// Copy Current Parameters to Processed
//-------------------------------------
putCmd("groupcopy('current','processed','acquisition')");
// Dutycycle Protection
DUTY d = init_dutycycle();
d.dutyon = getval("pw1Hhytrap") + getval("pw2Hhytrap") + getval("tHX");
d.dutyoff = d1 + 4.0e-6 + getval("t1HYtrap") + getval("t2HYtrap");
d.c1 = d.c1 + (!strcmp(dec.seq,"tppm"));
d.c1 = d.c1 + ((!strcmp(dec.seq,"tppm")) && (dec.t.a > 0.0));
d.t1 = getval("rd") + getval("ad") + at;
d.c2 = d.c2 + (!strcmp(dec.seq,"spinal"));
d.c2 = d.c2 + ((!strcmp(dec.seq,"spinal")) && (dec.s.a > 0.0));
d.t2 = getval("rd") + getval("ad") + at;
d = update_dutycycle(d);
abort_dutycycle(d,10.0);
// Set Phase Tables
settable(ph1Hhytrap,4,table1);
settable(phYhytrap,4,table2);
settable(ph2Hhytrap,4,table3);
settable(phXhx,4,table4);
settable(phHhx,4,table5);
settable(phRec,4,table6);
setreceiver(phRec);
// Begin Sequence
txphase(phXhx); decphase(ph1Hhytrap); dec2phase(phYhytrap);
obspwrf(getval("aXhx")); decpwrf(getval("aHhytrap")); dec2pwrf(getval("aYhytrap"));
obsunblank(); decunblank(); _unblank34();
delay(d1);
sp1on(); delay(2.0e-6); sp1off(); delay(2.0e-6);
// TRAPDOR on H with Y Modulation
decrgpulse(getval("pw1Hhytrap"),ph1Hhytrap,0.0,0.0);
decphase(ph2Hhytrap);
decunblank();
dec2on();
delay(getval("t1HYtrap"));
dec2off();
decrgpulse(getval("pw2Hhytrap"),ph2Hhytrap,0.0,0.0);
decphase(phHhx);
decunblank();
decphase(phHhx);
decpwrf(getval("aHhx"));
delay(getval("t2HYtrap"));
// H to X Cross Polarization
_cp_(hx,phHhx,phXhx);
// Begin Acquisition
_dseqon(dec);
obsblank(); _blank34();
delay(getval("rd"));
startacq(getval("ad"));
acquire(np, 1/sw);
endacq();
_dseqoff(dec);
obsunblank(); decunblank(); _unblank34();
}
pulsesequence() {
// Define Variables and Objects and Get Parameter Values
double aXfam2 = getval("aXfam2");
double pw1Xfam2 = getval("pw1Xfam2");
double pw2Xfam2 = getval("pw2Xfam2");
double pw3Xfam2 = getval("pw3Xfam2");
double pw4Xfam2 = getval("pw4Xfam2");
double nXfam2 = getval("nXfam2");
initval(nXfam2,v4);
putCmd("pw2Xmqmas=pwXfam1"); // Sequence uses pwXfam1 and sets pw2Xmqmas
double d2init = getval("d2"); // Define the Split d2 in the Pulse Sequence
double ival = getval("ival");
double d20 = 1.0;
double d21 = 0.0;
double d22 = 0.0;
if (ival == 1.5) {
d20 = 9.0*d2init/16.0;
d21 = 7.0*d2init/16.0;
d22 = 0.0;
}
else if (ival == 2.5) {
d20 = 12.0*d2init/31.0;
d21 = 0.0*d2init/31.0;
d22 = 19.0*d2init/31.0;
}
else {
d20 = 1.0*d2init;
d21 = 0.0*d2init;
d22 = 0.0*d2init;
}
double tXechselinit = getval("tXechsel"); // Adjust the selective echo delay for the
double tXechsel = tXechselinit - 3.0e-6; // attenuator switch time.
if (tXechsel < 0.0) tXechsel = 0.0;
DSEQ dec = getdseq("H");
strncpy(dec.t.ch,"dec",3);
putCmd("chHtppm='dec'\n");
strncpy(dec.s.ch,"dec",3);
putCmd("chHspinal='dec'\n");
// Set Constant-time Period for d2.
if (d2_index == 0) d2_init = getval("d2");
double d2_ = (ni - 1)/sw1 + d2_init;
putCmd("d2acqret = %f\n",roundoff(d2_,12.5e-9));
putCmd("d2dwret = %f\n",roundoff(1.0/sw1,12.5e-9));
//--------------------------------------
// Copy Current Parameters to Processed
//-------------------------------------
putCmd("groupcopy('current','processed','acquisition')");
// Dutycycle Protection
DUTY d = init_dutycycle();
d.dutyon = getval("pw1Xmqmas") + nXfam2*(pw1Xfam2 + pw2Xfam2 + pw3Xfam2 +pw4Xfam2) +
getval("pwXechsel");
d.dutyoff = d1 + 4.0e-6;
d.c1 = d.c1 + (!strcmp(dec.seq,"tppm"));
d.c1 = d.c1 + ((!strcmp(dec.seq,"tppm")) && (dec.t.a > 0.0));
d.t1 = d2_ + tXechselinit + getval("rd") + getval("ad") + at;
d.c2 = d.c2 + (!strcmp(dec.seq,"spinal"));
d.c2 = d.c2 + ((!strcmp(dec.seq,"spinal")) && (dec.s.a > 0.0));
d.t2 = d2_ + tXechselinit + getval("rd") + getval("ad") + at;
d = update_dutycycle(d);
abort_dutycycle(d,10.0);
// Set Phase Tables
if (phase1 == 0) {
settable(phf1Xmqmas,12,table1);
settable(ph1Xfam2,6,table2);
settable(ph2Xfam2,6,table3);
settable(phfXechsel,96,table4);
settable(phRec,48,table5);
}
else {
settable(phf1Xmqmas,6,table6);
settable(ph1Xfam2,6,table7);
settable(ph2Xfam2,6,table8);
settable(phfXechsel,48,table9);
settable(phRec,24,table10);
if (phase1 == 2) {
tsadd(phf1Xmqmas,30,360);
}
}
setreceiver(phRec);
obsstepsize(1.0);
// Begin Sequence
xmtrphase(phf1Xmqmas); decphase(zero);
obspower(getval("tpwr"));
obspwrf(getval("aXmqmas"));
obsunblank(); decunblank(); _unblank34();
delay(d1);
sp1on(); delay(2.0e-6); sp1off(); delay(2.0e-6);
// H Decoupler on Before MQMAS
_dseqon(dec);
// Two-Pulse MQMAS with DFS Conversion
rgpulse(getval("pw1Xmqmas"),zero,0.0,0.0);
xmtrphase(zero); txphase(ph1Xfam2);
obspwrf(aXfam2);
delay(d20);
// X FAM2 Pulse
loop(v4,v5);
xmtron();
delay(pw1Xfam2);
xmtroff();
txphase(ph2Xfam2);
delay(pw2Xfam2);
xmtron();
delay(pw3Xfam2);
xmtroff();
txphase(ph2Xfam2);
delay(pw4Xfam2);
endloop(v5);
// Tau Delay and Second Selective Echo Pulse
xmtrphase(phfXechsel);
obsblank();
obspower(getval("dbXechsel"));
obspwrf(getval("aXechsel"));
delay(3.0e-6);
obsunblank();
delay(d21 + tXechsel);
rgpulse(getval("pwXechsel"),zero,0.0,0.0);
delay(d22);
// Begin Acquisition
obsblank(); _blank34();
delay(getval("rd"));
startacq(getval("ad"));
acquire(np, 1/sw);
endacq();
_dseqoff(dec);
obsunblank(); decunblank(); _unblank34();
}
pulsesequence()
{
/* Internal variable declarations *********************/
double freq90[MAXNSLICE],freq180[MAXNSLICE];
double te_delay1,te_delay2,tr_delay,tau1,tau2,thk2fact,te_delay3=0.0,te_delay4=0.0,navTime=0.0;
double crushm0,pem0,gcrushr,gcrushp,gcrushs,pecrush;
double refsign=1,crushsign=1,navsign=1;
int shape90,shape180,table=0,sepRefocus;
char slprofile[MAXSTR];
/* sequence dependent diffusion variables */
double Gro,Gss; // "gdiff" for readout/readout refocus and slice/slice refocus
double dgro,dgss; // "delta" for readout/readout refocus and slice/slice refocus
double Dgro,Dgss; // "DELTA" for readout/readout refocus and slice/slice refocus
double dcrush,dgss2; // "delta" for crusher and gss2 gradients
double Dcrush,Dgss2; // "DELTA" for crusher and gss2 gradients
int i;
/* Real-time variables used in this sequence **********/
int vpe_steps = v1; // Number of PE steps
int vpe_ctr = v2; // PE loop counter
int vms_slices = v3; // Number of slices
int vms_ctr = v4; // Slice loop counter
int vpe_offset = v5; // PE/2 for non-table offset
int vpe_mult = v6; // PE multiplier, ranges from -PE/2 to PE/2
int vph180 = v7; // Phase of 180 pulse
int vph2 = v8; // alternate phase of 180 on odd transients
int vssc = v9; // Compressed steady-states
int vtrimage = v10; // Counts down from nt, trimage delay when 0
int vacquire = v11; // Argument for setacqvar, to skip steady state acquires
int vtrigblock = v12; // Number of slices per trigger block
/* Initialize paramaters *****************************/
init_mri();
thk2fact=getval("thk2fact");
pecrush=getval("pecrush");
sepRefocus=getvalnwarn("sepRefocus");
getstrnwarn("slprofile",slprofile);
/* Check for external PE table ***********************/
init_tablepar("pelist"); // Initialize pelist parameter
if (strcmp(petable,"n") && strcmp(petable,"N") && strcmp(petable,"")) {
loadtable(petable);
writetabletopar(t1,"pelist"); // Write t1 table to pelist parameter
table = 1;
}
/* RF Power & Bandwidth Calculations ******************/
shape_rf(&p1_rf,"p1",p1pat,p1,flip1,rof1,rof2);
shape_rf(&p2_rf,"p2",p2pat,p2,flip2,rof1,rof2);
calc_rf(&p1_rf,"tpwr1","tpwr1f");
calc_rf(&p2_rf,"tpwr2","tpwr2f");
/* Initialize gradient structures *********************/
init_slice(&ss_grad,"ss",thk);
init_slice(&ss2_grad,"ss2",thk*thk2fact);
init_dephase(&crush_grad,"crush");
init_slice_refocus(&ssr_grad,"ssr");
if (FP_LT(tcrushro,alfa)) tcrushro=alfa;
init_readout_butterfly(&ro_grad,"ro",lro,np,sw,gcrushro,tcrushro);
init_readout_refocus(&ror_grad,"ror");
init_phase(&pe_grad,"pe",lpe,nv);
init_generic(&spoil_grad,"spoil",gspoil,tspoil);
/* Gradient calculations ******************************/
calc_readout(&ro_grad, WRITE,"gro","sw","at");
ro_grad.m0ref *= grof;
calc_readout_refocus(&ror_grad,&ro_grad,NOWRITE,"gror");
calc_phase(&pe_grad,NOWRITE,"gpe","tpe");
calc_slice(&ss_grad,&p1_rf,WRITE,"gss");
calc_slice(&ss2_grad,&p2_rf,WRITE,"gss2");
calc_slice_refocus(&ssr_grad,&ss_grad,WRITE,"gssr");
calc_generic(&spoil_grad,WRITE,"","");
/* Make sure crushing in PE dimension does not refocus signal from 180 */
crushm0=fabs(gcrush*tcrush);
pem0=0.0; gcrushp=0.0;
if (pecrush) pem0=pe_grad.m0;
calc_dephase(&crush_grad,WRITE,crushm0+pem0,"","");
gcrushr = crush_grad.amp*crushm0/crush_grad.m0;
if (pecrush) gcrushp = crush_grad.amp;
gcrushs = crush_grad.amp*crushm0/crush_grad.m0;
/* Allow phase encode and read dephase to be separated from slice refocus */
if (sepRefocus) {
/* Equalize read dephase and PE gradient durations */
calc_sim_gradient(&ror_grad,&pe_grad,&null_grad,0,WRITE);
crushsign=-1;
} else {
if (slprofile[0] == 'y') {
/* Combined slice refocusing and read dephasing,
reverse gradient sign if ror > ssr integral */
refsign = (ss_grad.m0ref > ro_grad.m0ref) ? 1.0 : -1.0;
ss_grad.m0ref -= ro_grad.m0ref;
calc_slice_refocus(&ssr_grad,&ss_grad,NOWRITE,"gssr");
}
/* Equalize both refocus and PE gradient durations */
calc_sim_gradient(&ror_grad,&pe_grad,&ssr_grad,0,WRITE);
}
/* Create optional prepulse events ********************/
if (fsat[0] == 'y') create_fatsat();
if (sat[0] == 'y') create_satbands();
if (mt[0] == 'y') create_mtc();
if (ir[0] == 'y') create_inversion_recovery();
if (diff[0] == 'y') init_diffusion(&diffusion,&diff_grad,"diff",gdiff,tdelta);
sgl_error_check(sglerror);
/* Min TE *********************************************/
te = granularity(te,2*GRADIENT_RES);
/* tau1, tau2 are the sum of events in each half echo period */
/* tau1, tau2 include a GRADIENT_RES as this is minimum delay time */
tau1 = ss_grad.rfCenterBack + ssr_grad.duration + crush_grad.duration + ss2_grad.rfCenterFront + 2*GRADIENT_RES;
tau2 = ss2_grad.rfCenterBack + crush_grad.duration + ro_grad.timeToEcho + GRADIENT_RES;
if (sepRefocus) tau2 += ror_grad.duration;
temin = 2*MAX(tau1,tau2);
/* Diffusion ******************************************/
if (diff[0] == 'y') {
/* granulate tDELTA */
tDELTA = granularity(tDELTA,GRADIENT_RES);
/* taudiff is the duration of events between diffusion gradients */
taudiff = ss2_grad.duration + 2*crush_grad.duration + GRADIENT_RES;
/* set minimum diffusion structure requirements for gradient echo: taudiff, tDELTA, te and minte[0] */
set_diffusion(&diffusion,taudiff,tDELTA,te,minte[0]);
/* set additional diffusion structure requirements for spin echo: tau1 and tau2 */
set_diffusion_se(&diffusion,tau1,tau2);
/* calculate the diffusion structure delays.
address &temin is required in order to update temin accordingly */
calc_diffTime(&diffusion,&temin);
}
/* TE delays ******************************************/
if (minte[0] == 'y') {
te = temin;
putvalue("te",te);
}
if (FP_LT(te,temin)) {
abort_message("TE too short, minimum TE = %.3f ms\n",temin*1000);
}
te_delay1 = te/2 - tau1 + GRADIENT_RES;
te_delay2 = te/2 - tau2 + GRADIENT_RES;
if (navigator[0] == 'y') {
/* tau1, tau2 are the sum of events in each half echo period */
tau1 = ro_grad.timeFromEcho + pe_grad.duration + crush_grad.duration + ss2_grad.rfCenterFront;
tau2 = ss2_grad.rfCenterBack + crush_grad.duration + ro_grad.timeToEcho;
if (FP_GT(tau1,tau2)) {
te_delay3 = GRADIENT_RES;
te_delay4 = tau1-tau2+GRADIENT_RES;
} else {
te_delay3 = tau2-tau1+GRADIENT_RES;
te_delay4 = GRADIENT_RES;
}
navTime = te_delay3 + ss2_grad.duration + 2*crush_grad.duration + ro_grad.duration + te_delay4 + 2*GRADIENT_RES;
}
/* Check nsblock, the number of slices blocked together
(used for triggering and/or inversion recovery) */
check_nsblock();
/* Min TR *********************************************/
trmin = ss_grad.rfCenterFront + te + ro_grad.timeFromEcho + pe_grad.duration + 2*GRADIENT_RES;
/* Increase TR if any options are selected ************/
if (spoilflag[0] == 'y') trmin += spoil_grad.duration;
if (navigator[0] == 'y') trmin += navTime;
if (sat[0] == 'y') trmin += satTime;
if (fsat[0] == 'y') trmin += fsatTime;
if (mt[0] == 'y') trmin += mtTime;
if (ticks > 0) trmin += GRADIENT_RES;
/* Adjust for all slices ******************************/
trmin *= ns;
/* Inversion recovery *********************************/
if (ir[0] == 'y') {
/* tauti is the additional time beyond IR component to be included in ti */
/* satTime, fsatTime and mtTime all included as those modules will be after IR */
tauti = satTime + fsatTime + mtTime + GRADIENT_RES + ss_grad.rfCenterFront;
/* calc_irTime checks ti and returns the time of all IR components */
trmin += calc_irTime(tauti,trmin,mintr[0],tr,&trtype);
}
if (mintr[0] == 'y') {
tr = trmin;
putvalue("tr",tr);
}
if (FP_LT(tr,trmin)) {
abort_message("TR too short, minimum TR = %.3f ms\n",trmin*1000);
}
/* TR delay *******************************************/
tr_delay = granularity((tr-trmin)/ns,GRADIENT_RES);
/* Calculate B values *********************************/
if (ix == 1) {
/* Calculate bvalues according to main diffusion gradients */
calc_bvalues(&diffusion,"dro","dpe","dsl");
/* Add components from additional diffusion encoding imaging gradients peculiar to this sequence */
/* Initialize variables */
dgro = 0.5*(ror_grad.duration+ro_grad.timeToEcho);
Gro = ro_grad.m0ref/dgro; Dgro = dgro;
if (!sepRefocus) Dgro = te-ss_grad.rfCenterBack-ro_grad.timeToEcho;
dgss = 0.5*(ss_grad.rfCenterBack+ssr_grad.duration);
Gss = ss_grad.m0ref/dgss; Dgss = dgss;
dgss2 = ss2_grad.duration/2; Dgss2 = dgss2;
dcrush = crush_grad.duration-crush_grad.tramp; Dcrush = crush_grad.duration+ss2_grad.duration;
for (i = 0; i < diffusion.nbval; i++) {
/* set droval, dpeval and dslval */
set_dvalues(&diffusion,&droval,&dpeval,&dslval,i);
/* Readout */
diffusion.bro[i] += bval(Gro,dgro,Dgro);
diffusion.bro[i] += bval(crushsign*gcrushr,dcrush,Dcrush);
diffusion.bro[i] += bval_nested(gdiff*droval,tdelta,tDELTA,crushsign*gcrushr,dcrush,Dcrush);
if (!sepRefocus) {
diffusion.bro[i] += bval_nested(Gro,dgro,Dgro,gdiff*droval,tdelta,tDELTA);
diffusion.bro[i] += bval_nested(Gro,dgro,Dgro,crushsign*gcrushr,dcrush,Dcrush);
}
/* Phase */
if (pecrush) {
diffusion.bpe[i] += bval(gcrushp,dcrush,Dcrush);
diffusion.bpe[i] += bval_nested(gdiff*dpeval,tdelta,tDELTA,gcrushp,dcrush,Dcrush);
}
/* Slice */
diffusion.bsl[i] += bval(Gss,dgss,Dgss);
diffusion.bsl[i] += bval(gcrushs,dcrush,Dcrush);
diffusion.bsl[i] += bval(ss2_grad.ssamp,dgss2,Dgss2);
diffusion.bsl[i] += bval_nested(gdiff*dslval,tdelta,tDELTA,gcrushs,dcrush,Dcrush);
diffusion.bsl[i] += bval_nested(gdiff*dslval,tdelta,tDELTA,ss2_grad.ssamp,dgss2,Dgss2);
diffusion.bsl[i] += bval_nested(gcrushs,dcrush,Dcrush,ss2_grad.ssamp,dgss2,Dgss2);
/* Readout/Phase Cross-terms */
diffusion.brp[i] += bval_cross(gdiff*dpeval,tdelta,tDELTA,crushsign*gcrushr,dcrush,Dcrush);
diffusion.brp[i] += bval_cross(gdiff*dpeval,tdelta,tDELTA,crushsign*gcrushr,dcrush,Dcrush);
if (pecrush) diffusion.brp[i] += bval_cross(gdiff*droval,tdelta,tDELTA,gcrushp,dcrush,Dcrush);
if (!sepRefocus) {
diffusion.brp[i] += bval_cross(Gro,dgro,Dgro,gdiff*dpeval,tdelta,tDELTA);
if (pecrush) diffusion.brp[i] += bval_cross(Gro,dgro,Dgro,gcrushp,dcrush,Dcrush);
}
/* Readout/Slice Cross-terms */
diffusion.brs[i] += bval2(crushsign*gcrushr,gcrushs,dcrush,Dcrush);
diffusion.brs[i] += bval_cross(gdiff*droval,tdelta,tDELTA,gcrushs,dcrush,Dcrush);
diffusion.brs[i] += bval_cross(gdiff*dslval,tdelta,tDELTA,crushsign*gcrushr,dcrush,Dcrush);
diffusion.brs[i] += bval_cross(gdiff*droval,tdelta,tDELTA,ss2_grad.ssamp,dgss2,Dgss2);
if (!sepRefocus) {
diffusion.brs[i] += bval_cross(Gro,dgro,Dgro,gdiff*dslval,tdelta,tDELTA);
diffusion.brs[i] += bval_cross(Gro,dgro,Dgro,gcrushs,dcrush,Dcrush);
diffusion.brs[i] += bval_cross(Gro,dgro,Dgro,ss2_grad.ssamp,dgss2,Dgss2);
}
/* Slice/Phase Cross-terms */
diffusion.bsp[i] += bval_cross(gdiff*dpeval,tdelta,tDELTA,gcrushs,dcrush,Dcrush);
diffusion.bsp[i] += bval_cross(gdiff*dpeval,tdelta,tDELTA,ss2_grad.ssamp,dgss2,Dgss2);
if (pecrush) {
diffusion.bsp[i] += bval2(gcrushs,gcrushp,dcrush,Dcrush);
diffusion.bsp[i] += bval_cross(gdiff*dslval,tdelta,tDELTA,gcrushp,dcrush,Dcrush);
diffusion.bsp[i] += bval_cross(gcrushp,dcrush,Dcrush,ss2_grad.ssamp,dgss2,Dgss2);
}
} /* End for-all-directions */
/* Write the values */
write_bvalues(&diffusion,"bval","bvalue","max_bval");
}
/* Generate phase-ramped pulses ***********************/
offsetlist(pss,ss_grad.ssamp,0,freq90,ns,seqcon[1]);
offsetlist(pss,ss2_grad.ssamp,0,freq180,ns,seqcon[1]);
shape90 = shapelist(p1_rf.pulseName,ss_grad.rfDuration,freq90,ns,ss_grad.rfFraction,seqcon[1]);
shape180 = shapelist(p2_rf.pulseName,ss2_grad.rfDuration,freq180,ns,ss2_grad.rfFraction,seqcon[1]);
/* Set pe_steps for profile or full image *************/
pe_steps = prep_profile(profile[0],nv,&pe_grad,&null_grad);
F_initval(pe_steps/2.0,vpe_offset);
/* Shift DDR for pro **********************************/
roff = -poffset(pro,ro_grad.roamp);
/* Adjust experiment time for VnmrJ *******************/
if (ssc<0) {
if (seqcon[2] == 'c') g_setExpTime(trmean*(ntmean*pe_steps*arraydim - ssc*arraydim));
else g_setExpTime(trmean*(ntmean*pe_steps*arraydim - ssc*pe_steps*arraydim));
}
else g_setExpTime(trmean*ntmean*pe_steps*arraydim + tr*ssc);
/* Slice profile **************************************/
if (slprofile[0] == 'y' && !sepRefocus) ror_grad.amp = 0;
/* Set phase cycle table ******************************/
if (sepRefocus) settable(t2,1,ph180); // Phase encode is just before readout
else settable(t2,2,ph180);
/* PULSE SEQUENCE *************************************/
status(A); // Set status A
rotate(); // Set gradient rotation according to psi, phi and theta
triggerSelect(trigger); // Select trigger input 1/2/3
obsoffset(resto); // Set spectrometer frequency
delay(GRADIENT_RES); // Delay for frequency setting
initval(fabs(ssc),vssc); // Compressed steady-state counter
if (seqcon[2]=='s') assign(zero,vssc); // Zero for standard peloop
assign(one,vacquire); // real-time acquire flag
setacqvar(vacquire); // Turn on acquire when vacquire is zero
/* trigger */
if (ticks > 0) F_initval((double)nsblock,vtrigblock);
/* Begin phase-encode loop ****************************/
peloop(seqcon[2],pe_steps,vpe_steps,vpe_ctr);
if (trtype) delay(ns*tr_delay); // relaxation delay
/* Compressed steady-states: 1st array & transient, all arrays if ssc is negative */
if ((ix > 1) && (ssc > 0))
assign(zero,vssc);
sub(vpe_ctr,vssc,vpe_ctr); // vpe_ctr counts up from -ssc
assign(zero,vssc);
if (seqcon[2] == 's')
assign(zero,vacquire); // Always acquire for non-compressed loop
else {
ifzero(vpe_ctr);
assign(zero,vacquire); // Start acquiring when vpe_ctr reaches zero
endif(vpe_ctr);
}
/* Read external kspace table if set ******************/
if (table)
getelem(t1,vpe_ctr,vpe_mult);
else {
ifzero(vacquire);
sub(vpe_ctr,vpe_offset,vpe_mult);
elsenz(vacquire);
sub(zero,vpe_offset,vpe_mult); // Hold PE mult at initial value for steady states
endif(vacquire);
}
/* Phase cycle ****************************************/
getelem(t2,vpe_ctr,vph180); // For phase encoding with slice rephase
add(oph,vph180,vph180); // 180 deg pulse phase alternates +/- 90 from receiver
mod2(ct,vph2);
dbl(vph2,vph2);
add(vph180,vph2,vph180); // Alternate phase for 180 on odd transients
/* Begin multislice loop ******************************/
msloop(seqcon[1],ns,vms_slices,vms_ctr);
if (!trtype) delay(tr_delay); // Relaxation delay
if (ticks > 0) {
modn(vms_ctr,vtrigblock,vtest);
ifzero(vtest); // if the beginning of an trigger block
xgate(ticks);
grad_advance(gpropdelay);
delay(GRADIENT_RES);
elsenz(vtest);
delay(GRADIENT_RES);
endif(vtest);
}
sp1on(); delay(GRADIENT_RES); sp1off(); // Scope trigger
/* Prepulse options ***********************************/
if (ir[0] == 'y') inversion_recovery();
if (sat[0] == 'y') satbands();
if (fsat[0] == 'y') fatsat();
if (mt[0] == 'y') mtc();
/* Slice select RF pulse ******************************/
obspower(p1_rf.powerCoarse);
obspwrf(p1_rf.powerFine);
delay(GRADIENT_RES);
obl_shapedgradient(ss_grad.name,ss_grad.duration,0,0,ss_grad.amp,NOWAIT);
delay(ss_grad.rfDelayFront);
shapedpulselist(shape90,ss_grad.rfDuration,oph,rof1,rof2,seqcon[1],vms_ctr);
delay(ss_grad.rfDelayBack);
/* Slice refocus gradient *****************************/
if (sepRefocus)
obl_shapedgradient(ssr_grad.name,ssr_grad.duration,0,0,-ssr_grad.amp,WAIT);
else
/* Include phase encode and readout dephase gradient if refocus gradients not separated */
pe_shapedgradient(pe_grad.name,pe_grad.duration,ror_grad.amp,0,-ssr_grad.amp*refsign,pe_grad.increment,vpe_mult,WAIT);
if (diff[0] == 'y') {
delay(diffusion.d1);
diffusion_dephase(&diffusion,dro,dpe,dsl);
delay(diffusion.d2);
}
else
delay(te_delay1);
/* Refocusing RF pulse ********************************/
obspower(p2_rf.powerCoarse);
obspwrf(p2_rf.powerFine);
delay(GRADIENT_RES);
obl_shapedgradient(crush_grad.name,crush_grad.duration,crushsign*gcrushr,gcrushp,gcrushs,WAIT);
obl_shapedgradient(ss2_grad.name,ss2_grad.duration,0,0,ss2_grad.amp,NOWAIT);
delay(ss2_grad.rfDelayFront);
shapedpulselist(shape180,ss2_grad.rfDuration,vph180,rof2,rof2,seqcon[1],vms_ctr);
delay(ss2_grad.rfDelayBack);
obl_shapedgradient(crush_grad.name,crush_grad.duration,crushsign*gcrushr,gcrushp,gcrushs,WAIT);
if (diff[0] == 'y') {
delay(diffusion.d3);
diffusion_rephase(&diffusion,dro,dpe,dsl);
delay(diffusion.d4);
}
else
delay(te_delay2);
/* Readout dephase, phase encode & readout gradients **/
roff = -poffset(pro,ro_grad.roamp); // incase inverted navigator is acquired
if (slprofile[0] == 'y') {
/* Readout gradient only if refocus gradients not separated */
if (sepRefocus)
obl_shapedgradient(ror_grad.name,ror_grad.duration,0,0,-ror_grad.amp,WAIT);
obl_shapedgradient(ro_grad.name,ro_grad.duration,0,0,ro_grad.amp,NOWAIT);
} else {
/* Readout gradient only if refocus gradients not separated */
if (sepRefocus)
pe_shapedgradient(pe_grad.name,pe_grad.duration,-ror_grad.amp,0,0,-pe_grad.increment,vpe_mult,WAIT);
obl_shapedgradient(ro_grad.name,ro_grad.duration,ro_grad.amp,0,0,NOWAIT);
}
/* Acquisition ****************************************/
delay(ro_grad.atDelayFront-alfa);
startacq(alfa);
acquire(np,1.0/sw);
delay(ro_grad.atDelayBack);
endacq();
/* Rewind Phase encoding ******************************/
pe_shapedgradient(pe_grad.name,pe_grad.duration,0,0,0,pe_grad.increment,vpe_mult,WAIT);
/* Navigator acquisition ******************************/
if (navigator[0] == 'y') {
delay(te_delay3);
obl_shapedgradient(crush_grad.name,crush_grad.duration,-crushsign*gcrushr,0,-gcrushs,WAIT);
obl_shapedgradient(ss2_grad.name,ss2_grad.duration,0,0,ss2_grad.amp,NOWAIT);
delay(ss2_grad.rfDelayFront);
shapedpulselist(shape180,ss2_grad.rfDuration,vph180,rof2,rof2,seqcon[1],vms_ctr);
delay(ss2_grad.rfDelayBack);
obl_shapedgradient(crush_grad.name,crush_grad.duration,-crushsign*gcrushr,0,-gcrushs,WAIT);
delay(te_delay4);
obl_shapedgradient(ro_grad.name,ro_grad.duration,navsign*ro_grad.amp,0,0,NOWAIT);
delay(ro_grad.atDelayFront-alfa);
startacq(alfa);
acquire(np,1.0/sw);
delay(ro_grad.atDelayBack);
endacq();
}
if (spoilflag[0] == 'y') {
obl_shapedgradient(spoil_grad.name,spoil_grad.duration,navsign*spoil_grad.amp,0,spoil_grad.amp,WAIT);
}
endmsloop(seqcon[1],vms_ctr);
endpeloop(seqcon[2],vpe_ctr);
/* Inter-image delay **********************************/
sub(ntrt,ct,vtrimage);
decr(vtrimage);
ifzero(vtrimage);
delay(trimage);
endif(vtrimage);
/* Duty cycle *****************************************/
calc_grad_duty(tr);
}
pulsesequence()
{
double freq,fstart,fend;
double attn,attnd,attnd2,attnd3,attnd4,tattn;/* 5 channels supported */
double tunesw,tuneswd,tuneswd2,tuneswd3,tuneswd4,tsw;
double gain,gaind,gaind2,gaind3,gaind4,tgain;
int chan;
double offset_sec;
int np2;
int nfv,index;
nfv = (int) getval("nf");
np2 = np / 2;
status(A);
/* getRealSetDefault reduces logic - not in Inova */
getRealSetDefault(CURRENT,"tunesw",&tunesw,10000000.0);
getRealSetDefault(CURRENT,"tuneswd",&tuneswd,tunesw);
getRealSetDefault(CURRENT,"tuneswd2",&tuneswd2,tunesw);
getRealSetDefault(CURRENT,"tuneswd3",&tuneswd3,tunesw);
getRealSetDefault(CURRENT,"tuneswd4",&tuneswd4,tunesw);
getRealSetDefault(CURRENT,"tupwr",&attn,10.0);
getRealSetDefault(CURRENT,"tupwrd",&attnd,10.0);
getRealSetDefault(CURRENT,"tupwrd2",&attnd2,10.0);
getRealSetDefault(CURRENT,"tupwrd3",&attnd3,10.0);
getRealSetDefault(CURRENT,"tupwrd4",&attnd4,10.0);
getRealSetDefault(CURRENT,"gain",&gain,10.0);
getRealSetDefault(CURRENT,"gaind",&gaind,gain);
getRealSetDefault(CURRENT,"gaind2",&gaind2,gain);
getRealSetDefault(CURRENT,"gaind3",&gaind3,gain);
getRealSetDefault(CURRENT,"gaind4",&gaind4,gain);
offset_sec = (0.5 / sw);
setacqmode(WACQ|NZ);
for (index = 0; index < nf; index++)
{
switch(index) {
case 0: chan = OBSch; freq = sfrq; tattn = attn;
tgain = gain; tsw = tunesw; break;
case 1: chan = DECch; freq = dfrq; tattn = attnd;
tgain = gaind; tsw = tuneswd; break;
case 2: chan = DEC2ch; freq = dfrq2; tattn = attnd2;
tgain = gaind2; tsw = tuneswd2; break;
case 3: chan = DEC3ch; freq = dfrq3; tattn = attnd3;
tgain = gaind3; tsw = tuneswd3; break;
case 4: chan = DEC4ch; freq = dfrq4; tattn = attnd4;
tgain = gaind4; tsw = tuneswd4; break;
default: exit(-1);
}
fstart = freq - (tsw/2) * 1e-6;
fend = freq + (tsw/2) * 1.0e-6;
//printf("channel = %d frequency = %f\n",chan,freq);
//printf("channel = %d frequency span = %f\n",chan, tsw);
//printf("start=%f stop = %f\n",fstart,fend);
//printf("gain = %f power = %f\n",tgain,tattn);
hsdelay(d1);
set4Tune(chan,tgain);
assign(zero,oph);
genPower(tattn,chan);
delay(0.001);
startacq(alfa);
SweepNOffsetAcquire(fstart, fend, np2, chan, offset_sec);
endacq();
delay(0.001);
}
}
void pulsesequence() {
//
// Set the Maximum Dynamic Table Number
//
settablenumber(10);
setvvarnumber(30);
//Define Variables and Objects and Get Parameter Values
CP hx = getcp("HX",0.0,0.0,0,1);
strncpy(hx.fr,"dec",3);
strncpy(hx.to,"obs",3);
putCmd("frHX='dec'\n");
putCmd("toHX='obs'\n");
WMPA cpmg = getcpmg("cpmgX");
strncpy(cpmg.ch,"obs",3);
putCmd("chXcpmg='obs'\n");
double aXecho = getval("aXecho"); // define the echoX group in the sequence
double t1Xechoinit = getval("t1Xecho");
double pwXecho = getval("pwXecho");
double t2Xechoinit = getval("t2Xecho");
double t1Xecho = t1Xechoinit - pwXecho/2.0 - getval("pwX90")/2.0;
if (t1Xecho < 0.0) t1Xecho = 0.0;
double t2Xecho = t2Xechoinit - pwXecho/2.0 - cpmg.r1 - cpmg.t2 - getval("ad");
if (t2Xecho < 0.0) t2Xecho = 0.0;
DSEQ dec = getdseq("H");
strncpy(dec.t.ch,"dec",3);
putCmd("chHtppm='dec'\n");
strncpy(dec.s.ch,"dec",3);
putCmd("chHspinal='dec'\n");
//--------------------------------------
// Copy Current Parameters to Processed
//-------------------------------------
putCmd("groupcopy('current','processed','acquisition')");
// Dutycycle Protection
DUTY d = init_dutycycle();
d.dutyon = getval("pwH90") + getval("tHX") + pwXecho + (cpmg.cycles - 1)*cpmg.pw;
d.dutyoff = d1 + 4.0e-6;
d.c1 = d.c1 + (!strcmp(dec.seq,"tppm"));
d.c1 = d.c1 + ((!strcmp(dec.seq,"tppm")) && (dec.t.a > 0.0));
d.t1 = t1Xecho + t2Xecho + getval("rd") + getval("ad") +
at - (cpmg.cycles - 1)*cpmg.pw;
d.c2 = d.c2 + (!strcmp(dec.seq,"spinal"));
d.c2 = d.c2 + ((!strcmp(dec.seq,"spinal")) && (dec.s.a > 0.0));
d.t2 = t1Xecho + t2Xecho + getval("rd") + getval("ad") +
at - (cpmg.cycles - 1)*cpmg.pw;
d = update_dutycycle(d);
abort_dutycycle(d,10.0);
// Set Phase Tables
settable(phH90,64,table1);
settable(phXhx,64,table2);
settable(phHhx,64,table3);
settable(phXecho,64,table4);
settable(phXcpmg,64,table5);
settable(phRec,64,table6);
setreceiver(phRec);
// Begin Sequence
txphase(phXhx); decphase(phH90);
obspwrf(getval("aXhx")); decpwrf(getval("aH90"));
obsunblank(); decunblank(); _unblank34();
delay(d1);
sp1on(); delay(2.0e-6); sp1off(); delay(2.0e-6);
// H to X Cross Polarization
decrgpulse(getval("pwH90"),phH90,0.0,0.0);
decphase(phHhx);
_cp_(hx,phHhx,phXhx);
// H Decoupling On
decphase(zero);
_dseqon(dec);
// X Hahn Echo
txphase(phXecho);
obspwrf(aXecho);
delay(t1Xecho);
rgpulse(pwXecho,phXecho,0.0,0.0);
delay(t2Xecho);
// Apply CPMG Cycles
obsblank(); _blank34();
delay(cpmg.r1);
startacq(getval("ad"));
_cpmg(cpmg,phXcpmg);
endacq();
_dseqoff(dec);
obsunblank(); decunblank(); _unblank34();
}
pulsesequence() {
// Define Variables and Objects and Get Parameter Values
CP hy = getcp("HY",0.0,0.0,0,1);
strncpy(hy.fr,"dec",3);
strncpy(hy.to,"dec2",4);
putCmd("frHY='dec'\n");
putCmd("toHY='dec2'\n");
GP inept = getinept("ineptYX");
strncpy(inept.ch1,"dec2",4);
strncpy(inept.ch2,"obs",3);
putCmd("ch1YXinept='dec2'\n");
putCmd("ch2YXinept='obs'\n");
DSEQ dec = getdseq("H");
strncpy(dec.t.ch,"dec",3);
putCmd("chHtppm='dec'\n");
strncpy(dec.s.ch,"dec",3);
putCmd("chHspinal='dec'\n");
DSEQ mix = getdseq("Hmix");
strncpy(mix.t.ch,"dec",3);
putCmd("chHmixtppm='dec'\n");
strncpy(mix.s.ch,"dec",3);
putCmd("chHmixspinal='dec'\n");
// Dutycycle Protection
double simpw1 = inept.pw1;
if (inept.pw2 > inept.pw1) simpw1 = inept.pw2;
double simpw2 = inept.pw3;
if (inept.pw4 > inept.pw3) simpw2 = inept.pw4;
DUTY d = init_dutycycle();
d.dutyon = getval("pwH90") + getval("tHY") + 2.0*simpw1 + 2.0*simpw2;
d.dutyoff = d1 + 4.0e-6;
d.c1 = d.c1 + (!strcmp(dec.seq,"tppm"));
d.c1 = d.c1 + ((!strcmp(dec.seq,"tppm")) && (dec.t.a > 0.0));
d.t1 = inept.t1 + inept.t2 + inept.t3 + inept.t4 +
getval("rd") + getval("ad") + at;
d.c2 = d.c2 + (!strcmp(dec.seq,"spinal"));
d.c2 = d.c2 + ((!strcmp(dec.seq,"spinal")) && (dec.s.a > 0.0));
d.t2 = inept.t1 + inept.t2 + inept.t3 + inept.t4 +
getval("rd") + getval("ad") + at;
d = update_dutycycle(d);
abort_dutycycle(d,10.0);
// Set Phase Tables
settable(phH90,16,table1);
settable(phHhy,4,table2);
settable(phYhy,4,table3);
settable(ph1Yyxinept,4,table4);
settable(ph1Xyxinept,4,table5);
settable(ph2Yyxinept,4,table6);
settable(ph2Xyxinept,16,table7);
settable(ph3Yyxinept,8,table8);
settable(ph3Xyxinept,4,table9);
settable(phRec,8,table10);
setreceiver(phRec);
// Begin Sequence
txphase(ph1Xyxinept); decphase(phH90); dec2phase(phYhy);
obspwrf(getval("aXyxinept")); decpwrf(getval("aH90")); dec2pwrf(getval("aYhy"));
obsunblank(); decunblank(); _unblank34();
delay(d1);
sp1on(); delay(2.0e-6); sp1off(); delay(2.0e-6);
// H to Y Cross Polarization
decrgpulse(getval("pwH90"),phH90,0.0,0.0);
decphase(phHhy);
_cp_(hy,phHhy,phYhy);
decphase(zero);
// INEPT Transfer from Y to X
_dseqon(mix);
_ineptref(inept,ph1Yyxinept,ph1Xyxinept,ph2Yyxinept,ph2Xyxinept,ph3Yyxinept,ph3Xyxinept);
_dseqoff(mix);
// Begin Acquisition
_dseqon(dec);
obsblank(); _blank34();
delay(getval("rd"));
startacq(getval("ad"));
acquire(np, 1/sw);
endacq();
_dseqoff(dec);
obsunblank(); decunblank(); _unblank34();
}
void pulsesequence() {
//======================================================
// Define Variables and Objects and Get Parameter Values
//======================================================
// --------------------------------
// Acquisition Decoupling
// -------------------------------
char Xseq[MAXSTR];
getstr("Xseq",Xseq);
DSEQ dec = getdseq("X");
strncpy(dec.t.ch,"dec",3);
putCmd("chXtppm='dec'\n");
strncpy(dec.s.ch,"dec",3);
putCmd("chXspinal='dec'\n");
//-------------------------------------
// Homonuclear Decoupling During Echo
//-------------------------------------
MPDEC homo1 = getmpdec("hdec1H",0,0.0,0.0,0,1);
strncpy(homo1.mps.ch,"obs",3);
putCmd("chHhdec1='obs'\n");
// --------------------
// H echo calculation
// --------------------
double t1Hecho = getval("t1Hecho") - getval("pwHecho")/2.0 -
((!strcmp(homo1.dm,"y"))?getval("pwHshort1")*2.:0.0);
if (t1Hecho < 0.0) t1Hecho = 0.0;
double t2Hecho = getval("t2Hecho") - getval("pwHecho")/2.0 -
((!strcmp(homo1.dm,"y"))?getval("pwHshort1")*2.:0.0) -
getval("rd")- getval("ad");
if (t2Hecho < 0.0) t2Hecho = 0.0;
double t1H_echo = 0.0;
double t2H_echo = 0.0;
double t1H_left = 0.0;
double t2H_left = 0.0;
if (!strcmp(homo1.dm,"y")) {
t2H_echo = homo1.mps.t*((int)(t2Hecho/homo1.mps.t));
t2H_left = t2Hecho - t2H_echo;
t1H_echo = t2H_echo;
t1H_left = t1Hecho - t1H_echo;
}
//--------------------------------------
// Copy Current Parameters to Processed
//-------------------------------------
putCmd("groupcopy('current','processed','acquisition')");
//----------------------
// Dutycycle Protection
//----------------------
DUTY d = init_dutycycle();
d.dutyon = getval("pwH90");
d.dutyoff = d1 + 4.0e-6;
if (!strcmp(homo1.dm,"y"))
d.dutyon += t1H_echo + t2H_echo;
else
d.dutyoff += t1H_echo + t2H_echo;
d.c1 = d.c1 + (!strcmp(Xseq,"tppm"));
d.c1 = d.c1 + ((!strcmp(Xseq,"tppm")) && (dec.t.a > 0.0));
d.t1 = getval("rd") + getval("ad") + at;
d.c2 = d.c2 + (!strcmp(Xseq,"spinal"));
d.c2 = d.c2 + ((!strcmp(Xseq,"spinal")) && (dec.s.a > 0.0));
d.t2 = getval("rd") + getval("ad") + at;
d = update_dutycycle(d);
abort_dutycycle(d,10.0);
//------------------------
// Set Phase Tables
//-----------------------
settable(phH90,4,table1);
settable(phHecho,8,table2);
settable(phRec,4,table3);
setreceiver(phRec);
//=======================
// Begin Sequence
//=======================
txphase(phH90); decphase(zero);
obspwrf(getval("aH90"));
obsunblank(); decunblank(); _unblank34();
delay(d1);
sp1on(); delay(2.0e-6); sp1off(); delay(2.0e-6);
//------------------------
// H Direct Polarization
//------------------------
rgpulse(getval("pwH90"),phH90,0.0,0.0);
obsunblank(); decunblank(); _unblank34();
// -----------------------------
// H Hahn Echo
// -----------------------------
if (!strcmp(homo1.dm,"y")) {
delay (t1H_left);
if (getval("pwHshort1") > 0.0 ) {
obspwrf(getval("aHhdec1"));
rgpulse(getval("pwHshort1"),three,0.0,0.0);
obsunblank();
}
if (!strcmp(homo1.dm,"y")) _mpseqon(homo1.mps,zero);
delay(t1H_echo);
if (!strcmp(homo1.dm,"y")) _mpseqoff(homo1.mps);
if (getval("pwHshort1") > 0.0 ) {
obspwrf(getval("aHhdec1")); txphase(one);
rgpulse(getval("pwHshort1"),one,0.0,0.0);
obsunblank();
}
}
else delay(t1Hecho);
txphase(phHecho);
obspwrf(getval("aHecho"));
rgpulse(getval("pwHecho"),phHecho,0.0,0.0);
obsunblank();
if (!strcmp(homo1.dm,"y")) {
if (getval("pwHshort1") > 0.0 ) {
obspwrf(getval("aHhdec1"));
rgpulse(getval("pwHshort1"),three,0.0,0.0);
obsunblank();
}
if (!strcmp(homo1.dm,"y")) _mpseqon(homo1.mps,zero);
delay(t2H_echo);
if (!strcmp(homo1.dm,"y")) _mpseqoff(homo1.mps);
if(getval("pwHshort1")>0 ) {
obspwrf(getval("aHhdec1"));
rgpulse(getval("pwHshort1"),one,0.0,0.0);
obsunblank();
}
delay(t2H_left);
}
else delay(t2Hecho);
//====================
// Begin Acquisition
//====================
_dseqon(dec);
obsblank(); decblank(); _blank34();
delay(getval("rd"));
startacq(getval("ad"));
acquire(np, 1/sw);
endacq();
_dseqoff(dec);
obsunblank(); decunblank(); _unblank34();
}
