Fig. 6

Analysis of performance indicators of each classifier in the clinical-radiomics comprehensive model. For instance, the RF model demonstrates superior performance in terms of accuracy, specificity and stability. The Brier score and the maximum Youden index of the clinical-radiomics combined model established using the RF classifier were 0.0704 and 0.8642, respectively. (A) Precision-Recall curves assessing classifier performance in the clinical-radiomics combined model for predicting contralateral central lymph node metastasis of uPTC. (B) Calibration curves assessing classifier performance in the clinical-radiomics combined model for predicting contralateral central lymph node metastasis of uPTC.