Japanese encephalitis MRI

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Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]

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Overview

Magnetic resonance imaging (MRI) of the brain is better than computed tomography (CT) for detecting Japanese encephalitis virus-associated abnormalities such as changes in the thalamus, basal ganglia, midbrain, pons, and medulla. Thalamic lesions are the most commonly described abnormality; although these can be highly specific for JE in the appropriate clinical context, they are not a very sensitive marker of JE.

parenchymal oedema in affected regions DWI: variable restricted diffusion T1: low signal T2/FLAIR: high signal if haemorrhage is present: GRE: patchy blooming