Table 5 Diagnostic performance of the IVIM and ADC parameters derived from the two ROI methods
S-S ROI IVIM | W-L ROI IVIM | W-L ROI ADC | ||||
|---|---|---|---|---|---|---|
D | f | D | f | ADC600 | ADC990 | |
AUC | 0.924 | 0.695 | 0.962 | 0.756 | 0.970 | 0.939 |
Youden index | 0.788 | 0.451 | 0.871 | 0.530 | 0.826 | 0.830 |
Cut-off value | 0.950 | 0.337 | 0.870 | 0.353 | 1.49 | 1.35 |
Sensitivity(%) | 95.45 | 90.91 | 95.45 | 86.36 | 90.91 | 95.45 |
Specificity (%) | 83.33 | 54.17 | 91.67 | 66.67 | 91.67 | 87.50 |
Accuracy(%) | 89.13 | 71.74 | 97.83 | 76.09 | 89.13 | 91.30 |
PPV(%) | 84.00 | 64.52 | 92.00 | 70.37 | 90.48 | 87.50 |
NPV(%) | 95.24 | 86.67 | 95.65 | 84.21 | 88.00 | 95.45 |