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High‐resolution diffusion imaging with DIFRAD‐FSE (Diffusion‐Weighted Radial Acquisition of Data With Fast Spin‐Echo) MRI
Author(s) -
Trouard Theodore P.,
Theilmann Rebecca J.,
Altbach Maria I.,
Gmitro Arthur F.
Publication year - 1999
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/(sici)1522-2594(199907)42:1<11::aid-mrm3>3.0.co;2-j
Subject(s) - fast spin echo , nuclear magnetic resonance , diffusion mri , diffusion , spin echo , echo (communications protocol) , echo planar imaging , resolution (logic) , magnetic resonance imaging , diffusion imaging , physics , computer science , artificial intelligence , medicine , radiology , computer network , thermodynamics
A novel MRI method, DIFRAD‐FSE (diffusion‐weighted radial acquisition of data with fast spin‐echo), is demonstrated that enables rapid, high‐resolution multi‐shot diffusion‐weighted MRI without significant artifacts due to motion. Following a diffusion‐weighting spin‐echo preparation period, multiple radial lines of Fourier data are acquired using spin‐echo refocusing. Images can be reconstructed from the radial data set using a magnitude‐only filtered back‐projection reconstruction algorithm that removes phase errors due to motion. Results from human brain imaging demonstrate the ability of DIFRAD‐FSE to acquire multiple radial lines of Fourier data each TR period without significant artifacts due to relaxation and to produce high‐resolution diffusion‐weighted MR images without significant artifacts from motion. Magn Reson Med 42:11–18, 1999. © 1999 Wiley‐Liss, Inc.