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Water suppression with B 0 field gradient homospoil pulses in high‐resolution NMR spectroscopy
Author(s) -
Brereton I. M.,
Field J.,
Moxon L. N.,
Irving M. G.,
Doddrell D. M.
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.1910090114
Subject(s) - dephasing , pulsed field gradient , excitation , nuclear magnetic resonance , spectroscopy , resolution (logic) , chemistry , nuclear magnetic resonance spectroscopy , field (mathematics) , analytical chemistry (journal) , spin echo , atomic physics , physics , magnetic resonance imaging , condensed matter physics , chromatography , mathematics , medicine , organic chemistry , quantum mechanics , artificial intelligence , molecule , computer science , pure mathematics , radiology
The combination of a frequency nonselective excitation suppression method (1 3 3 1 sequence) with selective excitation followed by gradient‐induced dephasing of water transverse magnetization yielded suppression ratios of greater than 10,000:1. The need for gradient preemphasis and correction of Bo field shifts is discussed. The suppression efficiency of this method compared favorably to results obtained using the CPMG spin‐ echo technique to observe metabolite resonances in a urine sample. © 1989 Academic Press, Inc.