FIG 6. Axial MR images obtained 3 days after symptom onset in a 75-year-old man with left hemiparesis that rapidly resolved within 4 hours of onset.

A and B, Small cortical ischemic lesions in the right middle frontal gyrus are better visualized on a diffusion-weighted image than on a T2-weighted image.

C, A subsequent infart was overlooked on this follow-up T2-weighted MR image obtained 4 months after A and B.

D, A follow-up fast-FLAIR MR image obtained at the same time as C helps identify a small lesion at the same location as the prior ischemic lesions, indicating a chronic infarct.