Baseline characteristics
| Characteristics | Value | % |
|---|---|---|
| Patients | 59 | |
| Age (mean, yr) | 53.7 | |
| Female sex | 46 | 78 |
| Aneurysms | 66 | |
| Morphology | ||
| Saccular | 44 | 66.7 |
| Dissecting | 16 | 24.2 |
| Blister | 2 | 3 |
| Fusiform | 4 | 6.1 |
| Size (mean, mm) | 10.7 | |
| Size (maximum diameter) | ||
| <10 mm (small) | 38 | 57.6 |
| >10–25 mm (large) | 23 | 34.8 |
| >25 mm (giant) | 5 | 7.6 |
| Neck ≥4 mm | 50 | 75.8 |
| Dome-to-neck ratio <2 | 36 | 54.5 |
| Location | ||
| Anterior circulation | 54 | 81.8 |
| CCA | 25 | 37.9 |
| COA | 16 | 24.2 |
| MCA | 7 | 10.6 |
| ACA | 2 | 3 |
| PcomA | 4 | 6.1 |
| Posterior circulation | 12 | 18.2 |
| BA | 2 | 3 |
| VA | 7 | 10.7 |
| PCA | 2 | 3 |
| PICA | 1 | 1.5 |
Note:—CCA indicates cavernous carotid artery; COA, carotico-ophthalmic artery; BA, basilar artery; VA, vertebral artery; PcomA, posterior communicating artery; PCA, posterior cerebral artery; PICA, posterior inferior cerebellar artery.