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Table 2: 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%)