Target aneurysm characteristics
| Characteristic | Summary (n=204) |
| Aneurysm side | |
| Right | 95 (46.6%) |
| Left | 100 (49.0%) |
| Midline | 9 (4.4%) |
| Parent artery location | |
| ACA | 8 (3.9%) |
| A1 (origin to anterior communicating) | 3 (1.5%) |
| A2 (distal to anterior communicating) | 5 (2.5%) |
| Anterior communicating artery | 12 (5.9%) |
| MCA | 16 (7.8%) |
| M1 (origin to bifurcation) | 2 (1.0%) |
| M2 (distal to bifurcation) | 1 (0.5%) |
| MCA bifurcation | 13 (6.4%) |
| ICA | 155 (76.0%) |
| C1 (cervical segment) | 2 (1.0%) |
| C2 (petrous segment) | 1 (0.5%) |
| C3 (lacerum segment) | 3 (1.5%) |
| C4 (cavernous segment) | 8 (3.9%) |
| C5 (clinoid segment) | 18 (8.8%) |
| C6 (ophthalmic segment) | 84 (41.2%) |
| C7 (communicating segment)* | 39 (19.1%) |
| Vertebral | 13 (6.4%) |
| V4 (intradural) | 13 (6.4%) |
| Aneurysm morphology | |
| Saccular | 192 (94.1%) |
| Fusiform | 10 (4.9%) |
| Pseudo-aneurysm | 2 (1.0%) |
| Rupture status | |
| Unruptured | 166 (81.4%) |
| Ruptured | 38 (18.1%) |
| Previously treated | 47 (23.0%) |
| Coil embolization | 44 (93.6%) |
| Surgical clipping | 2 (4.3%) |
| Other | 1 (2.1%) |
| Aneurysm measurement | |
| Aneurysm maximal diameter (mm) | 8.5±5.61 |
| Small (<7 mm) | 102 (50.0%) |
| Medium (7 -<13 mm) | 69 (33.8%) |
| Large (13 -<25 mm) | 28 (13.7%) |
| Giant (≥25 mm) | 5 (2.5%) |
| Dome width (mm) | 7.3±5.01 |
| Dome height (mm) | 7.4±5.07 |
| Aneurysm neck length (mm) | 4.6±2.39 |
| Dome/neck ratio | 1.6±0.90 |
| Parent artery diameter proximal to target aneurysm (mm) | 3.7±0.74 |
| Parent artery diameter distal to target aneurysm (mm) | 3.2±0.62 |
Data are n (%) or mean±SD. Results are based on pre-procedure imaging assessed by the independent imaging core laboratory
*C7 includes the carotid terminus.