Figure 1.

(a) Single axial image from a diffusion-weighted sequence MRI at the level of the centrum semiovale demonstrates extensive restricted diffusion throughout the subcortical white matter of the frontal, temporal, and parietal lobes. Notice the complete sparing of the cortex. There was minimal restricted diffusion of the bilateral globus pallidi, with sparing of the other deep gray nuclei. (b) Associated apparent diffusion coefficient (ADC) map at the same level demonstrates signal dropout, indicating true restricted diffusion.