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.
Synonyms:
exact_synonym:
Diffusion weighted imaging (DWI) abnormality; Diffusion weighted magnetic resonance imaging (DWI) abnormality; MRI diffusion abnormality of the cerebrum