Correction of distortions due to the pulsed magnetic field gradient‐induced shift in B0 field by postprocessing

Gradient pulses used in most localization techniques induce time‐dependent shifts in B0 that strongly distort NMR signals. A postprocessing correction method requiring no additional hardware is proposed. The phase shift produced by the B0 shift is calculated from a reference free induction decay (FID) and used to correct any FID acquired with the Same sequence. © 1989 Academic Press, Inc.