Table 2 Radiologic profiles
From: Postoperative collateral formation after indirect bypass for hemorrhagic moyamoya disease
Characteristics | Value (%) |
|---|---|
Hemorrhagic site | |
 Anterior | 34 (53.1) |
 Posterior | 30 (46.9) |
Suzuki stage | |
 II | 7 (10.9) |
 III | 28 (43.8) |
 IV | 19 (29.7) |
 V | 1 (1.6) |
 VI | 2 (3.1) |
PCA involvement | 12 (18.8) |
Collateral circulation | |
 Grade I (1–4) | 13 (20.3) |
 Grade II (5–8) | 48 (75.0) |
 Grade III (9–12) | 3 (4.7) |
Dilation of AChA-PCoA | 48 (75.0) |
ECA collateral | |
 STA collateral | 1 (1.6) |
 MMA collateral | 36 (56.3) |
 OA collateral | 6 (9.4) |
The stage of pre-stroke period | |
 Normal | 9 (14.1) |
 Stage I | 1 (1.6) |
 Stage II | 18 (28.1) |
 Stage III | 18 (28.1) |
 Stage IV | 18 (28.1) |