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Receiver operating characteristic curves of different diagnostic models in the training set (A, B and C) and testing set (D, E and F). T1WI (left), T2WI (middle), and T1&T2WI (right). The combined radiomics model of the primary tumor with a 10-mm peritumoral extension (CRprim + 10) reached the highest AUC of 0.995 (95% CI, 0.991–0.999) in the training set and 0.872 (95% CI, 0.847–0.897) in the testing set
