Aneurysm and PAE contour deformations
| Group 1 | Group 2 | |
|---|---|---|
| No. of aneurysms with contact with bone or dura | 32 | 4 |
| Contour deformation of the aneurysm | 20 (62.5%) | 2 (50%) |
| Deformation of the PAE by aneurysm (bone erosion) | 5 (15.6%) | 2 (50%) |
| Location | ||
| PcomA | 9 (45%) | — |
| AcomA | 5 (25%) | — |
| ICA/ophthalmic | 1 (5%) | 2 (100%) |
| ICA C1/C2 | 1 (5%) | — |
| MCA | 3 (15%) | — |
| PCA P1/P2 | 1 (5%) | — |
Note:—PAE indicates perianeurysmal environment; PcomA, posterior communicating artery; AcomA, anterior communicating artery; ICA, internal carotid artery; MCA, middle cerebral artery; PCA, posterior cerebral artery.