Patient and aneurysm characteristics
| Age (years) | |
| Mean±SD | 54.5±11.5 |
| Median | 56.0 |
| Range | 26–78 |
| Gender, n (%) | |
| Men | 29 (48.3%) |
| Women | 31 (51.7%) |
| Main medical history, n (%) | |
| Smoking | 32 (53.3%) |
| Systemic hypertension | 23 (38.3%) |
| Hyperlipidemia | 6 (10.0%) |
| Myocardial disease | 2 (3.3%) |
| Hunt and Hess Score, n (%) | |
| I | 24 (40.0%) |
| II | 23 (38.3%) |
| III | 13 (21.7%) |
| mRS score before aneurysm rupture, n (%) | |
| 0 | 59 (98.3%) |
| 1 | 1 (1.7%) |
| Aneurysm sac width | |
| Mean (±SD) | 6.6 (±2.6) |
| Aneurysm neck width | |
| Mean (±SD) | 4.6 (±1.6) |
| Dome-to-neck ratio | |
| Mean (±SD) | 1.6 (±0.4) |
| Wide-neck aneurysm | |
| Neck size ≥4 mm | 36/60 (60.0%) |
| Dome-to-neck ratio <2 | 53/60 (88.3%) |
| Dome-to neck ratio ≤1.5 | 22/60 (36.7%) |
| Aneurysm location, n (%) | |
| AComA | 26 (43.3%) |
| MCA bifurcation | 23 (38.3%) |
| Basilar apex | 7 (11.7%) |
| ACA | 2 (3.3%) |
| ICA terminus | 1 (1.7%) |
| PComA | 1 (1.7%) |
ACA, anterior cerebral artery; AComA, anterior communicating artery; ICA, internal carotid artery; MCA, middle cerebral artery; mRS, modified Rankin Scale; PComA, posterior communicating artery.