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Angiographic aneurysm occlusion depending on A1 asymmetry grading
| A1 Asymmetry Grading Scale | Adequate Occlusion No. (%) |
|---|---|
| Bilateral functional A1 | 17/29 (59) |
| H1 (n = 20) | 12 (60) |
| H2 (n = 9) | 5 (55) |
| Unilateral functional A1 | 16/19 (84) |
| H3 (n = 6) | 4 (67) |
| Y (n = 13) | 12 (92) |
