Fig 2. Resting regional cerebral blood flow (rCBF) (A), postacetazolamide rCBF (B), and VR (C) on the ipsilateral side before, 2 weeks after, and 3 months after carotid endarterectomy (CEA). Group I, patients with poststenotic flow <3.5 mL/s; group II, patients with poststenotic flow >3.5 mL/s. The time courses in group I (open columns in A and B; open symbols in C) and group II (hatched columns in A and B, closed symbols in C) are shown. *, P < .05; #, P < .01, analysis of variance, versus preoperative value. Post hoc analysis was done by Fisher test.