Fig. 3

Comparison of prediction performance among MRI-based radiomics models and the mrTRG model. a Receiver operating characteristic curve analysis of Model_pCR compared with two single-phase mpMRI prediction models (pretreatment and posttreatment models) in the training cohort (n = 292), internal testing cohort (n = 74), and external validation cohort (n = 110). b Receiver operating characteristic curve analysis of mrTRG compared with MRI-based radiomics models in the internal testing cohort and external validation cohort. Pretreatment model, pre-NAT multiple parameter MRI-based radiomics model; posttreatment model, post-NAT multiple parameter MRI-based radiomics model; Model_pCR, multiple phase and multiple parameter MRI-based radiomics model; pCR, pathological complete response