Fig. 4

ROC analysis results (A) and DeLong’s tests (P value) of different radiomics signatures (B) in the internal validation cohort (left) and external validation cohort (right). ACC, accuracy; AUC, area under the curve; KNN, k-nearest neighbors; LDA, linear discriminant analysis; LR, logistic regression; NB, naive Bayes; RF, random forest; ROC, receiver operating characteristic; SEN, sensitivity; SPE, specificity; SVM, support vector machine; XGBoost, eXtreme Gradient Boosting