Definition: 'Diffusion Weighted Imaging'
diffusion weighted imagingType: Term
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.
The information shown above for diffusion weighted imaging is provided by Stedman's.
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