Table 3 Cut-off value, sensitivity, specificity, +PV, −PV, accuracy, and AUC of ADC values, rCBV ratios, and spectroscopic data for high- and low-grade gliomas
|  | Cut-off value | Sensitivity % | Specificity % | +PV % | −PV % | Accuracy % | AUC % |
|---|---|---|---|---|---|---|---|
rCBVt | More than1.7 | 96.87 | 95.24 | 96.9 | 95.2 | 96 | 98.5 |
rCBVp | More than1 | 87.5 | 100 | 100 | 84 | 87.5 | 90.5 |
Cho/NAAmass | More than1.8 | 100 | 76.2 | 86.5 | 100 | 76.2 | 87.2 |
Cho/Cr mass | 1.8 | 96.9 | 76.2 | 86.1 | 94.1 | 73 | 86.5 |