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Correction of distortions due to the pulsed magnetic field gradient‐induced shift in B 0 field by postprocessing
Author(s) -
Jehenson P.,
Syrota A.
Publication year - 1989
Publication title -
magnetic resonance in medicine
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.696
H-Index - 225
eISSN - 1522-2594
pISSN - 0740-3194
DOI - 10.1002/mrm.1910120212
Subject(s) - field (mathematics) , nuclear magnetic resonance , phase (matter) , sequence (biology) , pulse sequence , magnetic field , frequency shift , pulsed field gradient , physics , computer science , computational physics , chemistry , optics , mathematics , molecule , quantum mechanics , biochemistry , pure mathematics
Gradient pulses used in most localization techniques induce time‐dependent shifts in B 0 that strongly distort NMR signals. A postprocessing correction method requiring no additional hardware is proposed. The phase shift produced by the B 0 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.