Fig. 6

A and B showed the comparison of receiver operating characteristic curves between the radiomics nomogram and clinical model in the training and validation cohorts, respectively. C. Calibration curve of the radiomics nomogram in the training cohort. D. validation cohort. The calibration curve was used to estimate the goodness of fit between the actual value (Y-axis) and the predicted value of ALN metastasis (X-axis). The diagonal dashed line represents the predictive performance of the ideal model, the dotted line represents predictive performance of the nomogram, and the red solid line represents the performance of the radiomics nomogram without removed the bias. The closer the two curves are to the diagonal dashed line, the higher the predictive power of the model