label: Abnormal diffusion weighted cerebral MRI morphology
label_lc: abnormal diffusion weighted cerebral mri morphology
description: "A diffusion abnormality observed in diffusion-weighted magnetic resonance imaging (MRI) of the brain. Molecular diffusion refers to the notion that any type of molecule in a fluid (eg, water) is randomly displaced as the molecule is agitated by thermal energy. Restricted diffusion of water appears bright on diffusion-weighted images."