FIG 3. A, 3D CT angiogram (axial view) and B, posteroanterior stereoscopic views. The right anterior cerebral vein (
) and the deep middle cerebral vein (
) enter the sphenoparietal sinus via the uncal vein (
) without forming the anastomosis between the first and second segment, and also communicate through the peduncular vein (>>) with the contralateral BVR and the anterior pontomesencephalic vein (>). The left BVR communicates via the uncal vein (
) with the cavernous sinus, via the deep middle cerebral vein with the insular vein (
) and the superficial middle cerebral vein (
), via the peduncular vein (>>) with the anterior pontomesencephalic vein (>), and the great vein of Galen posteriorly
