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Multishot diffusion‐weighted FSE using PROPELLER MRI
Author(s) -
Pipe James G.,
Farthing Victoria G.,
Forbes Kirsten P.
Publication year - 2002
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.10014
Subject(s) - diffusion mri , echo planar imaging , computer science , diffusion , computer vision , artificial intelligence , signal (programming language) , spin echo , magnetic resonance imaging , nuclear magnetic resonance , physics , medicine , radiology , thermodynamics , programming language
A method for obtaining diffusion‐weighted images that are free from the artifacts associated with echo‐planar acquisitions, such as signal pile‐up and geometric warping, is introduced. It uses an ungated, multishot fast spin‐echo (FSE) acquisition that is self‐navigated. The phase of the refocusing pulses is alternated to minimize non‐Carr‐Purcell‐Meiboom‐Gill (CPMG) artifacts. Several reconstruction methods are combined to make this method robust against motion artifacts. Examples are shown of clinical diffusion‐weighted imaging and high‐resolution diffusion tensor imaging. Magn Reson Med 47:42–52, 2002. © 2002 Wiley‐Liss, Inc.