The Efficiency of Depicting Cerebral Veins Using 3D Digital Subtraction Angiography (3D-DSA) before Surgical Clipping of Aneurysms

Abstract

The transsylvian approach is a popular technique in neurosurgery, but surgical dissection of the sylvian fissure is often difficult. We report the usefulness of 3D digital subtraction venography for surgical planning of sylvian fissure dissection. In 3D digital subtraction venography, the injection rate was 3 ml/sec with a 6-second scan time and an x-ray delay time of 7 seconds. According to the 3D digital subtraction venography, the superficial sylvian vein was categorized into two patterns: the frontosylvian vein and the temporosylvian vein. This technique provided abundant working space with less brain retraction during aneurysm clipping.