Table 2.
Characteristics and result of embolization.
| Embolization Characteristics | Value (%) |
|---|---|
| Max diameter prior embolization (cm) | |
| Average | 4.14 |
| Range | 1.5-12 |
| Max diameter after embolization (cm) | |
| Average | 3.18 |
| Range | 1.25-6.37 |
| Volume prior embolization (cm3) | |
| Average | 24.24 |
| Range | 0.75-115.38 |
| Volume after embolization (cm3) | |
| Average | 9.95 |
| Range | 0.59-57.8 |
| SM grade prior embolization | |
| Average | 3.06 |
| Range | 1-5 |
| SM grade after embolization | |
| Average | 2.71 |
| Range | 1-4 |
| No. of total embolizations | |
| 1 | 67(77.9) |
| 2 | 10(11.6) |
| 3 | 6(7.0) |
| 4 | 3(3.5) |
| Onyx volume (cm3) | |
| Mean | 2.2 |
| Median | 1.8 |
| Range | 0.2-10 |
| AVM decrease in size after embolization | |
| <50% | 43 (50) |
| 50-90% | 40 (46.5) |
| >90% | 3 (3.5) |
| AVM shape after embolization | |
| Compact | 68(79.1) |
| Pieces | 18(20.9) |
| Draining vein stenosis | |
| Stenosis prior embolization | 4 |
| Stenosis after embolization | 3 |
| Coexisting intranidus aneurysms | 29(33.7) |
| Target embolization | 24 |
| None target embolizaiton | 5 |
| Coexisting hemodynamic aneurysms | 5(5.8) |
| Target embolization | 4 |
| None target embolization | 1 |
| Coexisting fistula | 9 (10.5) |
| Target embolization | 8 |
| Partial embolization | 1 |