Diagnostic performance of the cumulative histogram cutoff values of the IVIM MR imaging parameters, nCBV, and ADC values for differentiating recurrent tumor from treatment effect
| Parameters | AUCa | Cutoff | Sensitivity | Specificity |
|---|---|---|---|---|
| f90 | 0.957 (0.860, 0.994) | 0.056 | 87.1% | 95.0% |
| D10, 10−3·mm2·s−1 | 0.756 (0.615, 0.865) | 0.970 | 71.0% | 75.0% |
| nCBV90 | 0.940 (0.835, 0.987) | 2.892 | 83.9% | 95.0% |
| ADC10, 10−3·mm2·s−1 | 0.697 (0.552, 0.818) | 0.995 | 67.7% | 75.0% |
Note:—f90 indicates 90th percentile histogram cutoff of f; D10, 10th percentile histogram cutoff of D; nCBV90, 90th percentile histogram cutoff of nCBV; ADC10, 10th percentile histogram cutoff of ADC; AUC, the largest area under the ROC curve.
There was no statistically significant difference between the AUC for f90 and that for nCBV90.
↵a Numbers in parentheses are 95% confidence intervals.