Aneurysm location
| Location | Surgical Group (No.) (%) | Endovascular Group (No.) (%) |
|---|---|---|
| ICA | 27 (13.6) | 69 (28.3) |
| Cavernous | – | 2 |
| Ophthalmic | – | 4 |
| PcomA | 20 | 54 |
| Anterior choroidal artery | 3 | – |
| Bifurcation | 4 | 9 |
| ACA | 79 (39.7) | 110 (45.1) |
| A1 | 5 | 1 |
| AcomA | 66 | 102 |
| A2 | 8 | 7 |
| MCA | 89 (46.1) | 24 (9.8) |
| Proximal (M1) | 19 | 3 |
| Bifurcation | 62 | 19 |
| M2 | 5 | 2 |
| Posterior circulation | 7 (3.6) | 41 (16.8) |
| Vertebral artery | - | 1 |
| Basilar artery junction | - | 27 |
| SCA | - | 3 |
| PCA | 1 | 2 |
| PICA | 6 | 8 |
| Total | 199 (100) | 244 (100) |