| Complication type |
| Intraprocedural | 2 (3.5) | 1 (3.7) | 3 (3.4) | 1 (2.0) | 2 (2.8) | 1 (1.6) | 7 (3.3) | 3 (2.1) |
| Thrombolic event | 2 (3.5) | 0 (0) | 8 (9.2) | 3 (5.9) | 14 (19.7) | 6 (9.5) | 24 (11.2) | 9 (6.4) |
| Prolase of coil/microcatheter | 12 (21.5) | 7 (25.9) | 12 (13.8) | 15 (29.4) | 13 (18.3) | 12 (19.0) | 37 (17.2) | 34 (24.1) |
| Intraprocedural dissection | 0 (0) | 0 (0) | 0 (0) | 1 (2.0) | 3 (4.2) | 0 (0) | 3 (1.4) | 1 (0.7) |
| Clinical deterioration | 1 (1.8) | 0 (0) | 1 (1.1) | 2 (3.9) | 4 (5.6) | 3 (4.8) | 6 (2.8) | 5 (3.5) |
| Challenging coil placement | 1 (1.8) | 0 (0) | 2 (2.3) | 0 (0) | 0 (0) | 0 (0) | 3 (1.4) | 0 (0) |
| No dif./complication | 40 (70.2) | 19 (70.4) | 64 (73.6) | 33 (64.7) | 43 (60.6) | 46 (73.0) | 147 (68.4) | 98 (69.5) |