Age (years) | 50.9±12.2 |
Aneurysm location |
Anterior cerebral | 12 (6.1) |
Anterior communicating | 47 (23.9) |
Basilar | 2 (1.0) |
Internal carotid | 64 (32.5) |
Internal carotid bifurcation | 9 (4.6) |
Middle cerebral | 60 (30.5) |
Posterior inferior cerebellar | 3 (1.5) |
Side |
Right | 76 (38.6) |
Left | 87 (44.2) |
Midline | 34 (17.3) |
Morphology |
Saccular | 190 (96.5) |
Fusiform | 4 (2.0) |
Saccular/fusiform | 3 (1.5) |
Calcified | 8 (4.1) |
Partially thrombosed | 10 (5.1) |
Dome size (mm) | 7.3±5.6 |
Neck size (mm) (n=190) | 3.9±2.1 |
Ruptured | 143 (72.6) |
Hunt and Hess grade |
0–unruptured | 54 (27.4) |
I | 26 (13.2) |
II | 47 (23.9) |
III | 53 (26.9) |
IV | 12 (6.1) |
V | 5 (2.5) |
Modified Fisher grade (n=142) |
0 | 1 (0.7) |
I | 21 (14.8) |
II | 19 (13.4) |
III | 83 (58.5) |
IV | 6 (4.2) |
V | 12 (8.5) |