Table 2. Comparison of Perfusion CT Values of Surgical Side in the Region of Middle Cerebral Artery Pre- and Post-operation [mean±SD; median (P25–P75)].
| Perfusion CT Values | Pre-operation | Post-operation | z | P |
| CBF (ml·100 g−1·min−1) | 33.45(24.75–48.85) | 57.99(34.17–86.21) | −3.92 | 0.0001 |
| CBV (ml·100 g−1) | 3.68±1.90 | 2.56(1.96–5.88) | −0.30 | 0.7662 |
| MTT(s) | 5.42(4.62–7.85) | 3.71(2.05–5.04) | 2.87 | 0.0041 |
| TTP(s) | 20.23±4.17 | 17.73(16.24–20.77) | 2.49 | 0.0126 |
| rCBF | 0.72(0.42–0.94) | 1.29(1.12–1.82) | −4.81 | 0.0000 |
| rCBV | 0.94(0.8–1.14) | 1.23(0.84–1.86) | −3.21 | 0.0013 |
| rMTT | 1.18(1.04–1.96) | 0.95(0.77–1.30) | 3.24 | 0.0012 |
| rTTP | 1.03(1.00–1.15) | 0.99(0.95–1.02) | 4.08 | 0.0000 |
CBF = cerebral blood flow, CBV = cerebral blood volume, MTT = mean transit time TTP = time to peak, rCBF = relative cerebral blood flow, rCBV = relative cerebral blood volume, rMTT = relative mean transit time, rTTP = relative time to peak. P<0.05 was considered statistically significant. Normal distribution data were expressed as mean±SD while skew distribution of measurement data were expressed as median (P25–P75).