Figure 2From: Intraoperative angiography should be standard in cerebral aneurysm surgery Intraoperative angiogram demonstrating occlusion of middle cerebral artery aneurysm with patency of middle cerebral branches. The anterior communicating artery aneurysm is also occluded, but there is no filling of the anterior cerebral artery, suggesting parent vessel occlusion by the clip.Back to article page