FIG 3. Representative early CT sign of grade II occlusion.

A, Nonenhanced CT scan in a 57-year-old woman obtained 3 hours after left MCA stroke. Note obscuration of posterolateral part of the left lentiform nucleus (arrow).

B, Left local angiogram, obtained using a microcatheter, shows left MCA trunk occlusion with partial opacification of the lenticulostriate arteries (arrows).