Aneurysm location (391 aneurysms in 377 patients)
| Location | Number (%) |
|---|---|
| Anterior circulation | 270 (69) |
| Anterior communicating artery | 131 (34) |
| Posterior communicating artery | 78 (20) |
| Parophthalmic artery | 20 (5.1) |
| Middle cerebral artery | 18 (4.6) |
| Carotid termination | 10 (2.6) |
| Anterior choroidal artery | 7 (1.8) |
| Anterior cerebral artery | 2 (0.5) |
| Pericallosal artery | 2 (0.5) |
| Ophthalmic artery | 2 (0.5) |
| Posterior circulation | 121 (31) |
| Basilar artery | 85 (22) |
| Superior cerebellar artery | 14 (3.4) |
| Posterior inferior cerebellar artery | 12 (3.1) |
| Vertebral artery | 5 (1.3) |
| Posterior cerebral artery | 5 (1.3) |