Evaluation of Liver Fibrosis Using Texture Analysis on Combined-Contrast-Enhanced Magnetic Resonance Images at 3.0T
Table 3
Receiver operating characteristics (texture versus Metavir).
Classification
Cutoff
Area under curve
Sensitivity
Specificity
Accuracy
F <1 versus F ≥1
1.805
0.814 [0.654 0.975]
0.659 [0.513 0.804]
0.800 [0.449 1.000]
0.674 [0.524 0.797]
F <2 versus F ≥2
1.916
0.889 [0.783 0.994]
0.895 [0.757 1.000]
0.778 [0.621 0.919]
0.826 [0.686 0.916]
F <3 versus F ≥3
2.060
0.862 [0.701 1.000]
0.778 [0.506 1.000]
0.784 [0.651 0.916]
0.783 [0.615 0.867]
F <4 versus F = 4
2.174
0.976 [0.855 1.000]
1.000 [0.907 1.000]
0.930 [0.854 1.000]
0.935 [0.788 0.974]
Cutoff: the operating point on the ROC curve closest to (), the point of maximum sensitivity and specificity. —95% confidence interval. The mismatch between the texture-based cutoff and the histologic classification threshold is expected (see text).
