Table 3.

Performance comparison of the clinical model, radiomics signature, and radiomics nomogram in the training and external validation cohorts

Model	Training cohort (n = 86)	External validation cohort (n = 30)
Clinical model
Sensitivity	0.76	0.80
Specificity	0.80	0.76
Accuracy	0.79	0.77
AUC (95% CI)	0.75 (0.63–0.87)	0.71 (0.48–0.93)
Radiomics model
Sensitivity	0.89	1.0
Specificity	0.69	0.70
Accuracy	0.76	0.80
AUC (95% CI)	0.82 (0.73–0.91)	0.86 (0.74–0.99)
Radiomics nomogram
Sensitivity	0.57	0.60
Specificity	0.93	0.93
Accuracy	0.76	0.77
AUC (95% CI)	0.85 (0.78–0.93)	0.88 (0.76–1.00)