Definition: 'Diffusion Weighted Imaging'
diffusion weighted imaging
Type: Term
Definitions:
1. MRIs with intensity proportional to the diffusion constant of water; because of the impaired movement of water in myelin, the signal is strongest parallel to nerve tracts; used primarily to evaluate edema in acute stroke, but also shows demyelinating diseases, and has been used in mapping muscle fiber direction in the heart.
Synonyms:
diffusion imaging
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