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Single‐shot diffusion‐weighted trace imaging on a clinical scanner
Author(s) -
Chun Terry,
Uluğ Aziz M.,
van Zijl Peter C. M.
Publication year - 1998
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.1910400415
Subject(s) - scanner , single shot , echo planar imaging , diffusion , isotropy , diffusion mri , interference (communication) , trace (psycholinguistics) , image quality , nuclear magnetic resonance , physics , nuclear medicine , computer science , optics , artificial intelligence , magnetic resonance imaging , medicine , image (mathematics) , radiology , channel (broadcasting) , linguistics , philosophy , thermodynamics , computer network
The single‐shot trace‐weighted acquisition scheme for isotro‐pic diffusion imaging suggested by Mori and van Zijl Magn. Reson. Med. 33, 41–52 (1995) was implemented on a clinical scanner in combination with echo‐planar imaging. The results on phantoms and seven volunteers show that good‐quality multiplanar isotropic diffusion‐weighted images can be obtained within seconds and absolute D av images within 10–40 s, depending on the number of gradient strengths used. However, care has to be taken in using this type of multi‐bipolar‐gradient sequence to avoid measurement of artifactual diffusion constants due to background gradient interference. It is outlined how to test for this interference and how to optimize for the correct experiment.