Perfusion parameters and ROC analysis for low- and high-grade gliomas
| Group (No. of patients) | PS (mL/100 g/min) Mean (SD) | CBV (mL/100 g) Mean (SD) | CBF (mL/100 g/min) Mean (SD) | MTT (s) Mean (SD) |
|---|---|---|---|---|
| Low grade (8) | 0.52 (0.15) | 0.95 (0.22) | 27.0 (8.3) | 4.24 (1.42) |
| High grade (24) | 2.37 (1.40) | 2.79 (1.20) | 82.0 (73.7) | 4.67 (1.37) |
| P value | <.001 | <.001 | .0024 | .564 |
| C-statistic | 0.927 | 0.930 | 0.849 | 0.573 |
ROC indicates receiver operating characteristic; PS, permeability surface-area product; CBV, cerebral blood volume; CBF, cerebral blood flow; MTT, mean transit time.