Abbreviations
extrathyroidal extensionlymph node metastasispapillary thyroid cancerareas of interestsupport vector machinek-nearest neighborthe average area under the curvethe American Joint Committee on CancerUltrasoundSHapley Additive exPlanationsFlow chart of this study.LASSO algorithm for radiomics feature selection. Predictive Performance of Models. SHAP plots of the LightBGM model.Patient characteristics of the training and validation cohortsSummary of the performance of radiomics models and sonographer judgments in the training and validation cohorts