Table 4.

Aneurysm characteristics

Aneurysm characteristics	n=122
Location
Internal carotid artery	27.9% (34/122)
Anterior communicating artery	22.1% (27/122)
Middle cerebral artery	9.8% (12/122)
Posterior communicating artery	9.0% (11/122)
Basilar artery	8.2% (10/122)
Anterior cerebral artery	3.3% (4/122)
Anterior choroidal artery	2.5% (3/122)
Posterior cerebral artery	1.6% (2/122)
Other	15.6% (19/122)
Aneurysm height (mm)	5.7±2.6 (1.5 to 15)
Aneurysm neck width (mm)	3.5±1.4 (1.2 to 9.2)
Dome to neck ratio	1.7±0.4 (0.8 to 3.0)
Relationship to parent wall
Bifurcation	41.0% (50/122)
Sidewall	59.0% (72/122)