Morphologic factors of aneurysms and occlusion rate
| Morphologic Factors of Aneurysms Based on 3D Digital Subtraction Angiography | No. of Aneurysms in Each Occlusion Rate | Totals (n=47) | ||
|---|---|---|---|---|
| 100% (n=20) | ≧95% (n = 11) | <95% (n=16) | ||
| Largest diameter | ||||
| Small (<5 mm) | 13 | 4 | 7 | 25 |
| Medium (≧5 mm) | 7 | 7 | 9 | 22 |
| Neck size | ||||
| Small (<4 mm) | 17 | 10 | 12 | 39 |
| Wide (≧4 mm) | 3 | 1 | 4 | 8 |
| Shape | ||||
| Simple | 19 | 8 | 11 | 38 |
| Complex | 1 | 3 | 5 | 9 |
| Dome-to-neck ratio | ||||
| <1.2 | 0 | 1 | 9 | 10 |
| 1.2–1.5 | 11 | 6 | 4 | 21 |
| >1.5 | 9 | 4 | 3 | 16 |
| Relationship to the major neighboring artery | ||||
| Separate | 18 | 8 | 8 | 34 |
| Involved | 2 | 3 | 8 | 13 |