Table 2 Sensitivity, specificity, positive predictive value, negative predictive value, accuracy and confidence intervals for different MRI parameters
Parameter | AUC (95% CI) | Cut off point | Sensitivity% | Specificity% | PPV % | NPV % | Accuracy % |
|---|---|---|---|---|---|---|---|
ADC | 0.508 (0.321–0.695) | ≤ 1.125 | 59.3 | 66.7 | 80.0 | 42.1 | 61.5 |
rCBV | 0.875 (0.756–0.994) | ≥ 0.93 | 85.2 | 83.3 | 92.0 | 71.4 | 84.6 |
Cho/Cr | 0.704 (0.536–0.871) | ≥ 1.97 | 77.8 | 66.7 | 84.0 | 57.1 | 74.4 |
Cho/NAA | 0.829 (0.682–0.976) | ≥ 2.5 | 85.2 | 83.3 | 92.0 | 71.4 | 84.6 |
NAA/Cr | 0.799 (0.651–0.948) | ≤ 0.79 | 77.8 | 91.7 | 95.5 | 64.7 | 82.1 |