Fig. 3

aneurysm reconstruction technique to avoid the accordion effect. a: internal carotid artery (ICA) aneurysm projecting on the optic nerve (ON) and chiasma(OC), b: single clip causes wrinkling of the aneurysm and ICA internal wall, casing accordion effect, c: multiple clip reconstruction yields better vessel-aneurysm wall reconstruction, accordion effect avoidance, and favorable outcomes