Fig. 4

The receiver operating characteristic (ROC) curves showing the performance of the nomogram, radiomic model, clinical-semantic model, intra-nodular radiomic model and peri-nodular radiomic model in A training and B validation set. A Delong test showed that the nomogram exhibited better performance comparing to the clinical-semantic model in both training (p = 0.0002) and validation set (p = 0.003). Data in the parentheses referred to the 95% confidence interval of area under the curve (AUC)