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GRASE Improves Spatial Resolution in Single Shot Imaging
Author(s) -
Feinberg David A.,
Kiefer Berthold,
Johnson Glyn
Publication year - 1995
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.1910330411
Subject(s) - single shot , echo planar imaging , image resolution , resolution (logic) , shot (pellet) , signal (programming language) , echo (communications protocol) , image quality , computer science , planar , nuclear magnetic resonance , artificial intelligence , optics , physics , image (mathematics) , magnetic resonance imaging , materials science , computer graphics (images) , medicine , computer network , metallurgy , radiology , programming language
In single shot echo train imaging all the data required for a two dimensional image is acquired from a series of echoes generated following a single RF excitation pulse. Spatial resolution is limited because all samples must be acquired before the signal decays. In this paper we show theoretically that more echoes and hence better spatial resolution can be obtained with single shot GRASE imaging than with either echo planar imaging or single shot RARE imaging. This conclusion holds for both conventional imaging hardware and specialized gradient hardware designed for EPI. High quality single shot GRASE images support the theoretical conclusions.