FIG 2. MR images in patient 2 obtained 2 days after the onset of symptoms.

A and B, Spin-echo images (2500/80/1) at the level of the basal ganglia (A) and centrum semiovale (B) demonstrate extensive swelling and T2 prolongation in the cerebral cortex, especially in the insular cortex and cingulate gyrus. The perirolandic and occipital cortices are spared. The deep gray matter, white matter, and cerebellum are normal.

C, Diffusion-weighted image (TR, 7000, b = 800) shows reduced diffusion in the cerebral cortex, especially in the cingulate gyrus and insular cortex.