Perfusion measurements derived from CT perfusion acquisitions and their usual findings for core and penumbra in acute stroke
| Measurement | Core | Penumbra |
| Time to peak | ⇑ | ↑ |
| Mean transit time | ⇑ | ↑ |
| Cerebral blood flow | ⇓ | ↓ |
| Cerebral blood volume | ↓ | ↔ or ↑ |
| Flow:volume ratio | Matched | Unmatched |