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Workflow of the radiomics analysis. Pre, pre-NAC; 1st, the first cycle of NAC; CEe, the early phase of DCE-MRI; CEp, the peak phase of DCE-MRI; CEd, the delay phase of DCE-MRI; Delta, delta-radiomics features (the relative change values between pre- and 1st-radiomics features); LASSO, the least absolute shrinkage and selection operator; CV, cross-validation; ROC curve, the receiver operating characteristic curve.
