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Diffusion-weighted imaging in epilepsy

A 42-year-old female with no prior history of seizures presented with status epilepticus thought to be due to antibody negative autoimmune limbic encephalitis. (A) B1500 diffusion weighted imaging shows diffusion restriction in right mesial temporal lobe. (B) Apparent diffusion coefficient (ADC) illustrates acute timing of diffusion restriction. (C) Fluid-attenuated inversion recovery (FLAIR) shows similar right mesial temporal hyperintensity. (Contributed by Dr. Wesley Kerr.)