Characteristics of aneurysms treated
| GDCs | Matrix Coils | Total | |
|---|---|---|---|
| Aneurysms harbored | 230 | 159 | 389 |
| Embolized aneurysms (%) | 219 (95.2) | 145 (91.2) | 364 (93.6) |
| Nonembolized aneurysms (%) | 11 (4.8) | 14 (8.8) | 25 (6.4) |
| Wide neck | 6 (54.6) | 4 (28.6) | 10 (40) |
| Branch from sac | 4 (36.4) | 3 (21.4) | 7 (28) |
| Severe condition | 1 (9.1) | 7 (50) | 8 (32) |
| Ruptured | 160 (73.1) | 100 (69) | 260 (71.4) |
| Unruptured | 59 (26.9) | 45 (31) | 104 (28.6) |
| Anterior circulation (%) | 198 (90.4) | 134 (92.4) | 332 (91.2) |
| ICA | 71 (32.4) | 54 (37.2) | 125 (34.3) |
| AcomA | 65 (29.7) | 49 (33.8) | 114 (31.3) |
| MCA | 47 (21.5) | 23 (15.9) | 70 (19.2) |
| ACA | 15 (6.9) | 8 (5.5) | 23 (6.3) |
| Posterior circulation (%) | 21 (9.6) | 11 (7.6) | 32 (8.8) |
| BA | 14 (6.4) | 6 (4.1) | 20 (5.5) |
| VA | 5 (2.3) | 4 (2.8) | 9 (2.5) |
| PCA | 1 (0.5) | 0 | 1 (0.3) |
| PICA | 1 (0.5) | 1 (0.7) | 1 (0.3) |
| Aneurysm size, mean ± SD | 5.8 ± 1.3 | 5.3 ± 1.1 | 5.7 ± 1.0 |
| (range) (mm) | (2–26) | (2–25) | (2–26) |
| Neck size, mean ± SD | 2.3 ± 0.4 | 2.7 ± 0.5 | 2.6 ± 0.4 |
| (range) (mm) | (1–5) | (1–6) | (1–6) |
Note:—GDC indicates Gugliemi detachable coil; ICA, internal carotid artery; AcomA, anterior communicating artery; MCA, middle cerebral artery; ACA, anterior cerebral artery; BA, basilar artery; VA, vertebral artery; PCA, posterior cerebral artery; PICA, posterior inferior cerebral artery.