Figure 4
From: Familial perimesencephalic subarachnoid hemorrhage: two case reports
Case 2. Axial computed tomography angiography of the head (A and B) shows a Type B basal vein of Rosenthal on the right side (arrow head in A) and a Type A basal vein of Rosenthal on the left side (arrows in A and B). Lateral view of the venous phase of the internal carotid artery angiogram (C and D) shows a Type B basal vein of Rosenthal on the right side (arrow in C; the basal vein of Rosenthal is not visualized anteriorly) and a Type A basal vein of Rosenthal on the left side (arrow in D).