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seq.mp
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seq.mp
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% ----------------------------------------------------------------------
% Pulse sequence graphics
%
% This file is part of Mark White's PhD thesis.
%
% Copyright (c) 2004 Mark J White <mark@celos.net>
% Distributed under 2-clause BSD licence; no warranty. See COPYING.txt.
% ----------------------------------------------------------------------
input pulses.mp
% FID acquisition
beginfig(0);
initf;
startline(rf,"RF");
xline(1);
xpulse(1,1,"a" infont "Symbol");
xline(0.2);
xacq(5);
xline(1);
endfig;
% Spin-echo fragement
beginfig(1);
initf;
startline(rf,"RF");
xline(1);
xpulse(1,1,"a" infont "Symbol");
ospan(-0.5,-1.8,4,"TE/2");
xline(3);
xpulse(1,1.6,"180");
ospan(-0.5,-1.8,4,"TE/2");
xline(2);
oecho(1.5);
oguide(1.5,-2);
xacq(3);
xline(1);
endfig;
% Gradient echo fragment
beginfig(2);
initf;
startline(rf,"RF");
xline(1);
xpulse(1,1,"a" infont "Symbol");
ospan(-0.5,-1.5,4,"TE");
ospan(-0.5,-2,2,"TE/2");
xline(2);
oecho(1.5);
xacq(3);
xline(2);
startline(g0,"Gx");
xline(1.5);
oshade(0,2,-0.5);
xsquare(2,-0.5);
oshade(0,2,0.5);
oguide(2,2);
xsquare(4,0.5);
xline(1.5);
endfig;
% Slice-selection fragment
beginfig(3);
initf;
startline(rf,"RF");
xline(1);
xpulse(1,1,"a" infont "Symbol");
xline(3);
startline(g0+1u,"Gz");
xline(0.5);
ospan(0,-1.0,2,"Ts");
oshade(1,1,0.5);
oguide(1,1);
xsquare(2,0.5);
ospan(0,-1.0,1,"Ts/2");
oshade(0,1,-0.5);
xsquare(1,-0.5);
xline(1.5);
endfig;
% Readout encoding fragment with spin-echo
% (NB gradient-echo version would be the same as Figure 2)
beginfig(4);
initf;
startline(rf,"RF");
xline(1);
xpulse(1,1,"a" infont "Symbol");
ospan(-0.5,-1.8,4,"TE/2");
xline(3);
xpulse(1,1.6,"180");
ospan(-0.5,-1.8,4,"TE/2");
xline(2);
oecho(1.5);
xacq(3);
xline(1);
startline(g0,"Gx");
xline(2.5);
ospan(0,-0.7,2,"Tr/2");
oshade(0,2,0.5);
xsquare(2,0.5);
xline(3);
ospan(0,-0.7,4,"Tr");
oshade(0,2,0.5);
xsquare(4,0.5);
oguide(-2,2);
xline(0.5);
endfig;
% Phase encoding fragment with spin-echo
beginfig(5);
initf;
startline(rf,"RF");
xline(1);
ospan(0.5,-1.8,4,"TE/2");
xpulse(1,1,"a" infont "Symbol");
xline(3);
ospan(0.5,-1.8,4,"TE/2");
xpulse(1,1.6,"180");
xline(2);
oecho(1.5);
oguide(1.5,-2);
xacq(3);
xline(1);
startline(g0,"Gy");
xline(2.5);
ospan(0,-1.2,2,"Tp");
xtable(2,0.8,5,-1);
xline(7.5);
endfig;
% Multislice SE volume acquisition - outline of sequence
beginfig(6);
initf;
startline(rf,"RF");
xline(1);
ospan(0.5,-1.8,4,"TE/2");
xpulse(1,1,"a" infont "Symbol");
xline(3);
ospan(0.5,-1.8,4,"TE/2");
xpulse(1,1.6,"180");
xline(2);
oecho(1.5);
xacq(3);
xline(1);
startline(g0,"Gx");
xline(2.5);
ospan(0,-0.4,2,"Tr/2");
xsquare(2,0.5);
xline(3);
ospan(0,-0.4,4,"Tr");
xsquare(4,0.5);
xline(0.5);
startline(g1,"Gy");
xline(2.5);
ospan(0,-1.2,2,"Tp");
xtable(2,0.8,5,-1);
xline(7.5);
startline(g2,"Gz");
xline(0.5);
ospan(0,-1.1,2,"Ts");
xsquare(2,0.5);
ospan(0,-1.1,1,"Ts/2");
xsquare(1,-0.5);
xline(8.5);
endfig;
% 3D gradient-echo sequence with EPI factor 3
beginfig(7);
initf;
startline(rf,"RF");
xline(1);
ospan(0.5,-1.5,3,"TE");
xpulse(1,1,"a" infont "Symbol");
xline(1.2);
ospan(1.3,-1.5,3,"TE");
oecho(1.3);
xacq(2.6);
xline(0.4);
ospan(1.3,-1.5,3,"TE");
oecho(1.3);
xacq(2.6);
xline(0.4);
oecho(1.3);
xacq(2.6);
xline(1.4);
startline(g0,"Gx");
xline(1.5);
xsquare(1.5,-0.5);
xsquare(3,0.5);
xsquare(3,-0.5);
xsquare(3,0.5);
xline(1);
startline(g1,"Gy");
xline(2);
xtable(1,0.8,2,-1);
xline(2.8);
xblip(0.4,-0.4);
xline(2.6);
xblip(0.4,-0.4);
xline(3.8);
startline(g2,"Gz");
xline(2);
ospan(0,-1.2,1,"Tp");
xtable(1,0.8,5,1);
xline(10);
endfig;
% Echo symbol for key
beginfig(100);
initf;
oecho(0);
endfig;
end