Patient and index aneurysm characteristics
| Characteristics | CA (n = 111) | SAC (n = 94) | Total (n = 205) |
|---|---|---|---|
| Patient | |||
| Age at treatment (mean) (SD) (yr) | 58.6 (10.4) | 58.0 (8.8) | 58.3 (9.7) |
| Female (No.) (%) | 77 (69.4) | 65 (69.1) | 142 (69.3) |
| STAT type lesion | |||
| STAT-1: unruptured aneurysm, never treated, with a dimension of ≥ 10 mm (No.) (%) | 21 (18.9) | 17 (18.1) | 38 (18.5) |
| STAT-2: major recurrent aneurysm after previous coiling, but no previous stent placement (No.) (%) | 41 (36.9) | 34 (36.2) | 75 (36.6) |
| STAT-3: small (<10 mm), wide-neck (≥ 4 mm) aneurysm (No.) (%) | 49 (44.1) | 43 (45.7) | 92 (44.9) |
| Pretreatment mRS score (No.) (%) | |||
| 0 | 84 (75.7) | 70 (74.5) | 154 (75.1) |
| 1 | 21 (18.9) | 20 (21.3) | 41 (20.0) |
| 2 | 5 (4.5) | 2 (2.1) | 7 (3.4) |
| 3 | 1 (0.9) | 1 (1.1) | 2 (1.0) |
| 4 | 0 | 1 (1.1) | 1 (0.5) |
| Presentation | |||
| Symptomatic | 4 (3.6) | 4 (4.3) | 8 (3.9) |
| Additional aneurysm to a previously ruptured and treated one | 13 (11.7) | 6 (6.4) | 19 (9.3) |
| Incidental finding | 94 (84.7) | 84 (89.4) | 178 (86.8) |
| Index aneurysm location (No.) (%) | |||
| Anterior circulation | 78 (70.3) | 58 (61.7) | 136 (66.3) |
| Ophthalmic/paraophthalmic | 7 (6.3) | 3 (3.2) | 10 (4.9) |
| Posterior communicating/anterior choroidal | 7 (6.3) | 13 (13.8) | 20 (9.8) |
| Carotid terminus | 6 (5.4) | 1 (1.1) | 7 (3.4) |
| MCA bifurcation/M1 | 18 (16.2) | 14 (14.9) | 32 (15.6) |
| Anterior communicating/A1 | 40 (36.0) | 25 (26.6) | 65 (31.7) |
| Distal ACA | 0 | 2 (2.1) | 2 (1.0) |
| Posterior circulation | 33 (29.7) | 36 (38.3) | 69 (33.7) |
| PCA | 0 | 3 (3.2) | 3 (1.5) |
| Basilar terminus | 24 (21.6) | 23 (24.5) | 47 (22.9) |
| SCA | 3 (2.7) | 5 (5.3) | 8 (3.9) |
| Basilar trunk | 2 (1.8) | 0 | 2 (1.0) |
| Vertebrobasilar junction | 2 (1.8) | 2 (2.1) | 4 (2.0) |
| PICA | 2 (1.8) | 3 (3.2) | 5 (2.4) |
| Index aneurysm maximal external size (mean) (SD) (range) (mm) | 9.2 (6.4) | 9.2 (5.9) | 9.2 (6.1) |
| (2–50) | (3–35) | (2–50) | |
| <10 (No.) (%) | 74 (66.7) | 63 (67.0) | 137 (66.8) |
| ≥10 (No.) (%) | 37 (33.3) | 31 (33.0) | 68 (33.2) |
| Index aneurysm neck size (mean) (SD) (range) (mm) | 4.4 (2.2) | 4.1 (1.6) | 4.3 (1.9) |
| (2–20) | (2–9) | (2–20) | |
| Aneurysm neck ≥4 mm (No.) (%) | 72 (64.9) | 58 (61.7) | 130 (63.4) |
Note:—ACA indicates anterior cerebral artery; PCA, posterior cerebral artery; SCA, superior cerebellar artery.