Diagnostic performance of individual parameters in the detection of glioma recurrencea
| rCBVmean ≥ 1.709 | ADCmean ≤ 1507 | Cho/Cr ≥ 1.405 | TBRmax ≥ 1.579 | TBRmean ≥ 1.179 | |
|---|---|---|---|---|---|
| Sensitivity | 82.8% | 86.7% | 100.0% | 93.3% | 90.0% |
| Specificity | 63.6% | 54.5% | 66.7% | 72.7% | 81.8% |
| PPV | 85.7% | 83.9% | 88.9% | 90.3% | 93.1% |
| NPV | 58.3% | 60.0% | 100.0% | 80.0% | 75.0% |
| Accuracy | 77.5% | 78.0% | 90.9% | 87.8% | 87.8% |
| AUC±SE | 0.68 ± 0.111 | 0.752 ± 0.015 | 0.861 ± 0.08 | 0.827 ± 0.078 | 0.888 ± 0.059 |
| P value | .008b | .013b | <.001b | <.001b | <.001b |
Note:—PPV indicates positive predictive value; NPV, negative predictive value; SE, standard error.
↵a The ADCmean value is expressed as ×10−6mm2/s and rCBVmean. Cho/Cr, TBRmax, and TBRmean are ratios and hence unitless. P values mentioned are generated while calculating the AUC from the ROC analysis.
↵b P values of rCBVmean, ADCmean, Cho/Cr, TBRmax, and TBRmean are <.05 and hence are statistically significant. P value reflects the significance of the ROC analysis of individual parameters represented in the table.