The CTP parameters of patients with carotid artery stenosis regarding as high risk of hyperperfusion pre-pro procedure (n=41)
| Preoperation | After stage 1 | After stage 2 | P1 | P2 | |
|---|---|---|---|---|---|
| CBF | 0.85±0.05 | 0.98±0.06 | 1.01±0.07 | <0.001 | <0.001 |
| CBV | 0.98±0.02 | 0.993±0.022 | 0.990±0.021 | 0.70 | 0.85 |
| MTT | 1.15±0.05 | 1.05±0.05 | 1.01±0.05 | <0.001 | <0.001 |
| TTP | 1.20±0.06 | 1.04±0.06 | 0.99±0.06 | <0.001 | <0.001 |
Values are in mean (SD). Numbers in parentheses are the median and range.
CBF, cerebral blood flow; CBV, cerebral blood volume; CTP, CT perfusion; MTT, mean transit time; P1, preoperation compared with stage 1; P2, stage 1 compared with stage 2; TTP, time to peak.