Aneurysm location and anatomic configuration
| Patient No. | Aneurysm Location | Arterial Branch Arising from the Sac |
|---|---|---|
| 1 | AcomA | A2 segment from right ACA |
| 2 | Prebifurcation M1 segment from MCA | Sylvian branch |
| 3 | Prebifurcation M1 segment from MCA | Sylvian branch |
| 4 | Prebifurcation M1 segment from MCA | Sylvian branch |
| 5 | ICA bifurcation | A1 segment from left ACA |
| 6 | PcomA | Fetal type PcomA |
| 7 | AchA | AchA |
| 8 | AcomA | Median pericallosal artery |
| 9 | BA-SCA | SCA |
Note:—AcomA indicates anterior communicating artery; ACA, anterior cerebral artery; M1, first segment of the middle cerebral artery; PcomA, posterior communicating artery; ICA, internal carotid artery; BA, basilar artery; SCA, superior cerebellar artery; AchA, anterior choroidal artery; MCA, middle cerebral artery; A2, second segment of the anterior cerebral artery.