Fig 1.

A–C, An 88-year-old woman who had right-side weakness for 1 hour 50 minutes. Left MCA was not visible on initial 3D TOF MRA images (not presented).

Abnormal hyperintensity is noted at left corona radiata on b = 2000 image (B, white arrows) but it is not definite on b = 1000 image (A). Note relative hyperintensity of right corona radiata on b = 2000 image compared with b = 1000 image (B, small white arrows). This is normal and therefore should not be regarded as an ischemic lesion. Follow-up T2-weighted images obtained 3 days later shows progression of the infarction in the corresponding left corona radiata area (C).