FIG 1. Case 1. Sample case of predominant striatal lesions in the early stage. Images were obtained at 3 (A and B) and 5 (C and D) months from the onset of symptoms.

A, FLAIR image shows changes, which are not as conspicuous as in B.

B, Striata appear hyperintense at diffusion-weighted imaging. Note that the anterior portion of the bilateral putamina (arrows) appears more hyperintense than does the posterior portion at diffusion-weighted imaging.

C and D, Severe atrophy is depicted in both cerebral cortices and the caudate nuclei heads at FLAIR imaging (C) and diffusion-weighted imaging (D). Note that the putamina are entirely involved in C as compared with their appearance in B. Hyperintensity in the heads of the caudate nuclei appears less prominent; this appearance is associated with their volume loss and the dilatation of the frontal horns.