Preprocedual angioarchitectural characteristics of 130 patients with sbAVM embolization
| Angiographic Features | No. (%) |
|---|---|
| Location | |
| Eloquent cortex | 44 (33.85%) |
| Noneloquent cortex | 62 (47.69%) |
| Midline | 12 (9.23%) |
| Deep | 12 (9.23%) |
| Size | |
| ≤3 cm | 32 (24.62%) |
| 3–6 cm | 80 (61.54%) |
| ≥6 cm | 18 (13.85%) |
| No. of feeders | |
| 1 | 17 (13.08%) |
| 2 | 28 (21.54%) |
| ≥3 | 85 (65.38%) |
| Arterial feeders classification | |
| Terminal | 95 (73.08%) |
| Perforating | 35 (26.92%) |
| No. of draining veins | |
| 1 | 55 (42.31%) |
| 2 | 37 (28.46%) |
| ≥3 | 38 (29.23%) |
| Venous drainage classification | |
| Exclusive superficial | 79 (60.77%) |
| Exclusive deep | 16 (12.31%) |
| Combined | 35 (26.92%) |
| Venous morphology | |
| Venous reflux | 35 (26.92%) |
| Venous ectasia | 29 (22.31%) |
| Venous stenosis | 46 (35.38%) |
| Coexisting aneurysm | |
| Intranidal | 30 (23.08%) |
| Perinidal | 7 (5.38%) |
| Spetzler-Martin classification | |
| I–II | 50 (38.46%) |
| III | 36 (27.69%) |
| IV | 30 (23.08%) |
| V | 14 (10.77%) |