Right | Midline | Left | Total | |
Anterior cerebral artery Anterior communicating artery Proximal to anterior communicating Pericallosal Subtotal |
3 4 7 |
33
33 |
3 3 6 |
33 6 7 46 |
Internal carotid artery Proximal or ophthalmic region Posterior communicating region Bifurcation Cavernous internal carotid Subtotal |
1 25 2 1 29 |
3 17
20 |
4 42 2 1 49 | |
Middle cerebral artery Bifurcation Distal to main bifurcation Subtotal |
16 3 19 |
10 2 12 |
26 5 31 | |
Posterior circulation Basilar bifurcation Posterior cerebral artery Subtotal |
1 1 |
1
1 |
1 1 2 | |
Total | 56 | 34 | 38 | 128 |