Number of detected aneurysms on DSA and 3DRA on 27 predefined aneurysm locations in 4 subgroups
| Subgroup | Location* | No. of Aneurysms |
|---|---|---|
| Anterior cerebral artery | Anterior communicating artery | 32 |
| Pericallosal artery | 4 | |
| ICA | ICA tip | 3 |
| ICA, other locations | 8 | |
| Posterior communicating artery | 20 | |
| MCA | M1 segment | 7 |
| M2 segment | 3 | |
| Bifurcation | 21 | |
| Posterior circulation | Anterior inferior cerebellar artery | 0 |
| Basilar tip | 8 | |
| Basilar trunk | 2 | |
| Posterior cerebral artery | 1 | |
| Posterior inferior cerebellar artery | 4 | |
| Superior cerebellar artery | 3 | |
| Vertebral artery | 1 | |
| Total | 117 |
* All locations were left and right, except for the anterior communicating artery, basilar trunk, and basilar tip, resulting in 27 predefined locations.