Patient and aneurysm characteristics
| Characteristics | 457 Patients with 497 Aneurysms with 6-Month Angiographic Follow-Up | 297 Patients with 316 Aneurysms with Adequate Occlusion at 6 Months | 36 Patients Fulfilling Inclusion Criteria Not Participating in the Study | 104 Patients with 111 Aneurysms with Long-Term MRA Follow-Up |
|---|---|---|---|---|
| Women | 311 (68%) | 206 (69%) | 22 (61%) | 71 (69%) |
| Mean age (yr) | (median, 51; range, 18–82) | 52.0 (median, 51; range, 26–82) | 56.0 (median, 55; range, 36–69) | 54.7 (median, 54; range, 39–70) |
| Ruptured aneurysms | 351 (77%) | 216 (72%) | 30 (83%) | 84 (81%) |
| Aneurysm size (mm) | 2–55 (mean, 9.2; median, 7) | 2–22 (mean, 7.4; median, 6) | 3–15 (mean, 7.4; median, 7) | 3–17 (mean, 6.6; median, 5) |
| Aneurysm location | ||||
| ACA | 137 (27.6%) | 86 (27.2%) | 8 (22.2%) | 23 (20.7%) |
| MCA | 34 (6.8%) | 20 (6.3%) | 1 (2.7%) | 11 (9.9%) |
| Posterior circulation | 167 (33.6%) | 107 (33.9%) | 10 (27.7%) | 46 (41.5) |
| ICA | 159 (32%) | 103 (32.6%) | 17 (47.2%) | 31 (27.9%) |
Note:—ACA indicates anterior cerebral artery; MCA, middle cerebral artery; ICA, internal carotid artery.