Eloquent reperfusion-primary motor cortex (ER-PMC) grading
| ER-PMC grade | Definition |
| Absent (0) | No visible antegrade perfusion in any of the distal PMC cortical branches* |
| Partial (1) | Antegrade perfusion in one or more, but not all, distal PMC cortical branches* |
| Complete (2) | Complete antegrade flow in all PMC cortical branches* |
*PMC middle cerebral artery (MCA) branches: (1) precentral, (2) central (aka Rolandic), (3) postcentral (aka anterior parietal). PMC anterior cerebral artery (ACA) branch: (4) medial frontal branch arising from callosomarginal or pericallosal arteries.