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Self‐refocusing 270° gaussian pulses for slice selection without gradient reversal in magnetic resonance imaging
Author(s) -
Emsley Lyndon,
Bodenhausen Geoffrey
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.1910100212
Subject(s) - gaussian , pulse (music) , amplitude , nuclear magnetic resonance , physics , magnetic resonance imaging , selection (genetic algorithm) , optics , wafer , resonance (particle physics) , computational physics , materials science , computer science , atomic physics , artificial intelligence , optoelectronics , medicine , detector , quantum mechanics , radiology
It is demonstrated, on the grounds of simulations, how 270° Gaussian pulses can be used for slice selection in nuclear magnetic resonance imaging experiments. It is shown that the usual gradient reversal procedure can be omitted if the selective 90° pulse normally used is replaced by a self‐refocusing 270° pulse with a Gaussian timedomain amplitude profile, and some of the properties which are specific to this type of pulse are explored. © 1989 Academic Press, Inc.