| GOS | VA (n = 12) | MCA (n = 24) | Pericallosal Arteries (n = 11) | ACoA (n = 54) |
| 1 | 2 | 2 | 1 | 9 |
| 2 | 0 | 0 | 0 | 0 |
| 3 | 2 | 1 | 0 | 3 |
| 4 | 3 | 2 | 5 | 4 |
| 5 | 5 | 19 | 5 | 38 |