;PEW5 ;Perfect Echo Watergate Sequence ;Described in ;Ralph W. Adams, Chloe M. Holroyd, Juan A. Aguilar, Mathias Nilsson and Gareth A. Morris ;Chem. Commun., 2013,49, 358-360 ; This sequence is not fully tested and comes without warranty. ; Check the sequence and your parameters carefully before use. ; ;Based on ;water suppression using watergate W5 pulse sequence with gradients ;using double echo ; ;M. Liu, X. Mao, C. He, H. Huang, J.K. Nicholson & J.C. Lindon, ; J. Magn. Reson. 132, 125 - 129 (1998) ; ;$CLASS=HighRes ;$DIM=1D ;$TYPE= ;$SUBTYPE= ;$COMMENT= #include #include 1 ze 2 30m d1 10u pl1:f1 p1 ph1 50u UNBLKGRAD p16:gp1 d16 pl18:f1 p27*0.087 ph3 d19*2 p27*0.206 ph3 d19*2 p27*0.413 ph3 d19*2 p27*0.778 ph3 d19*2 p27*1.491 ph3 d19*2 p27*1.491 ph4 d19*2 p27*0.778 ph4 d19*2 p27*0.413 ph4 d19*2 p27*0.206 ph4 d19*2 p27*0.087 ph4 50u p16:gp1 d16 pl1:f1 p1 ph10 50u p16:gp2 d16 pl18:f1 p27*0.087 ph5 d19*2 p27*0.206 ph5 d19*2 p27*0.413 ph5 d19*2 p27*0.778 ph5 d19*2 p27*1.491 ph5 d19*2 p27*1.491 ph6 d19*2 p27*0.778 ph6 d19*2 p27*0.413 ph6 d19*2 p27*0.206 ph6 d19*2 p27*0.087 ph6 p16:gp2 d16 50u BLKGRAD go=2 ph31 30m mc #0 to 2 F0(zd) exit ph1=0 2 ph3=0 0 1 1 2 2 3 3 ph4=2 2 3 3 0 0 1 1 ph5=0 0 0 0 0 0 0 0 1 1 1 1 1 1 1 1 2 2 2 2 2 2 2 2 3 3 3 3 3 3 3 3 ph6=2 2 2 2 2 2 2 2 3 3 3 3 3 3 3 3 0 0 0 0 0 0 0 0 1 1 1 1 1 1 1 1 ph10=1 ph31=0 2 2 0 0 2 2 0 2 0 0 2 2 0 0 2 ;pl1 : f1 channel - power level for pulse (default) ;pl18: f1 channel - power level for 3-9-19-pulse (watergate) ;p1 : f1 channel - 90 degree high power pulse ;p16: homospoil/gradient pulse ;p27: f1 channel - 90 degree pulse at pl18 ;d1 : relaxation delay; 1-5 * T1 ;d16: delay for homospoil/gradient recovery ;d19: delay for binomial water suppression ; d19 = (1/(2*d)), d = distance of next null (in Hz) ;NS: 8 * n, total number of scans: NS * TD0 ;DS: 4 ;use gradient ratio: gp 1 : gp 2 ; 34 : 22 ;for z-only gradients: ;gpz1: 34% ;gpz2: 22% ;use gradient files: ;gpnam1: SINE.100 ;gpnam2: SINE.100 ;$Id: zggpw5,v 1.8 2005/11/10 12:17:01 ber Exp $