Table 2.

Diagnostic performance of texture features in predicting stage of liver fibrosis

Texture parameter	Fibrosis stage	Threshold	Sensitivity	Specificity	AUC	Lower CI	Upper CI
Mean (ssf 3)	F0 vs F1-F4	0.3	0.78	0.73	0.81	0.77	0.85
	F0-1 vs F2-4	0.44	0.74	0.75	0.80	0.76	0.83
	F0-2 vs F3-4	0.54	0.78	0.73	0.82	0.79	0.86
	F0-3 vs F4	0.9	0.75	0.81	0.85	0.82	0.88
Mpp	F0 vs F1-F4	98.4	0.3	0.9	0.58	053	0.63
	F0-1 vs F2-4	100.3	0.35	0.87	0.62	0.58	0.67
	F0-2 vs F3-4	107.2	0.55	0.76	0.67	0.63	0.72
	F0-3 vs F4	106.4	0.54	0.71	0.63	0.58	0.68
Skewness	F0 vs F1-F4	1.5	0.64	0.71	0.69	0.64	0.74
	F0-1 vs F2-4	1.6	0.74	0.66	0.73	0.68	0.77
	F0-2 vs F3-4	1.4	0.76	0.68	0.76	0.71	0.80
	F0-3 vs F4	1.4	0.85	0.63	0.78	0.75	0.82
Kurtosis	F0 vs F1-F4	4.5	0.4	0.87	0.61	0.56	0.65
	F0-1 vs F2-4	5.7	0.54	0.79	0.65	0.60	0.69
	F0-2 vs F3-4	4.6	0.51	0.82	0.66	0.61	0.70
	F0-3 vs F4	4.6	0.61	0.79	0.71	0.66	0.76

AUC, area under the curve; CI, confidence interval;

All measurements were performed in the portal venous phase in segments IV-VIII. Mean at spatial scaling factor 3 (medium filter), mpp at ssf 0, skewness and kurtosis at ssf 6 (coarse filter).