Table 3.

Predictive performance of the radiomic signature and radiomic nomogram.

Model	Radiomic signature		Accuracy (95% CI)	ADC value		Accuracy (95% CI)	Radiomic nomogram		Accuracy (95% CI)
	Sensitivity	Specificity		Sensitivity	Specificity		Sensitivity	Specificity
Training group	0.846	0.976	0.944 (0.846–0.988)	0.935	0.478	0.741 (0.603–0.850)	0.952	0.916	0.944 (0.846–0.988)
Internal validation group	1.000	0.706	0.773 (0.546–0.921)	0.941	0.800	0.909 (0.708–0.989)	1.000	0.625	0.864 (0.651–0.971)
External validation group	0.800	0.727	0.786 (0.656–0.884)	0.756	0.636	0.732 (0.597–0.842)	0.771	1.000	0.798 (0.696–0.870)

ADC, apparent diffusion coefficient; CI, confidence interval.