Immediate and follow-up results of ruptured and unruptured aneurysmsa
| Immediate | 3-Month Follow-Up | 12-Month Follow-Up | |
|---|---|---|---|
| Total | 98 (100%) | 78 (79.6%) | 49 (50.0%) |
| Grade | |||
| 1 | 8 (8.2%) | 33 (42.3%) | 21 (42.9%) |
| 2 | 6 (6.1%) | 14 (17.9%) | 8 (16.3%) |
| 3 | 2 (2.0%) | 16 (20.5%) | 9 (18.4%) |
| 4 | 82 (83.7%) | 7 (9.0%) | 4 (8.1%) |
| 5 | 0 (0.0%) | 8 (10.3%) | 7 (14.3%) |
| Complete occlusion (grades 1 and 2) | 47 (60.2%) | 29 (59.2%) | |
| Sufficient occlusion (grades 1–3) | 63 (80.7%) | 38 (77.6%) |
↵a 1 indicates no residual flow in aneurysm/WEB; 2, opacification of the proximal recess of the WEB; 3, neck remnant; 4, residual flow inside the WEB; 5, aneurysm remnant.