Preoperative assessment (n=197)
| Assessment | n (%) |
|---|---|
| Intraoperative angiography required (yes) | 144 (73.1) |
| Rationale for decision | |
| Aneurysm size | 44 (22.3) |
| Calcification | 6 (3.1) |
| Aneurysmal thrombus | 7 (3.6) |
| Location | 74 (37.6) |
| Neck morphology | 36 (18.3) |
| Branch vessel involvement | 89 (45.2) |
| Likely fenestrated clip use | 29 (14.7) |