Procedure related complications
| Complication | Overall rate (n/N (%)) | Anterior circulation (n/N (%)) | Posterior circulation (n/N (%)) |
|---|---|---|---|
| Symptomatic ICH | 5/128 (4) | 5/108 (5) | 0/20 (0) |
| Asymptomatic ICH | 20/129 (16) | 18/108 (17) | 2/21 (9.5) |
| Embolization to previously uninvolved territory | 5/129 (4) | 4/108 (4) | 1/21 (5) |
| Vessel dissection | 2/129 (2) | 1/108 (1) | 1/21 (5) |
| Vasospasm | 2/128 (2) | 2/108 (2) | 0/20 (0) |
| Vessel perforation | 1/129 (1) | 1/108 (1) | 0/21 (0) |
| Major groin complication | 4/129 (3) | 2/108 (2) | 2/21 (10) |
ICH, intracranial hemorrhage.