FIG 1. (cont'd) G, Post-treatment diffusion-weighted image of the same slice as in C showing an area of persistent, although smaller, signal abnormality in the right frontal region and complete resolution of the parietal region defect, presumably representing reversible parenchymal changes of intracellular water accumulation.

H, Post-treatment perfusion-weighted imaging showing marked improvement in the mean transit delay.

I, Post-treatment axial T2-weighted fast spin-echo image unchanged from images prior to treatment. The small cortical infarct persists and no new lesion has developed in the parietal lobe.

J, 1-year follow-up axial T2-weighted fast spin-echo image showing extremely small residual cortical lesion.