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) |