Extended Endoscopic Endonasal Approaches for Cerebral Aneurysms: Anatomical, Virtual Reality and Morphometric Study
Figure 5
(a) endoscopic endonasal approach to the superior part of the clivus; (b) close up view of the superior third of the retroclival area. III: third cranial nerve; SCA: superior cerebellar artery; BA: basilar artery; BV: basilar vein; AICA: anterior inferior cerebellar artery; PCA: posterior cerebral artery; MB: mammilary body; BAt: tip of the basilar artery; ICA: internal carotid artery; DS: dissector; L: left; R: right; *: third cranial nerve; **: floor of the third ventricle.
