Preoperative prediction of perineural invasion of rectal cancer based on a magnetic resonance imaging radiomics model: A dual-center study

Figure 4 Receiver operating characteristic curves for perineural invasion prediction of different models. A: Receiver operating characteristic (ROC) curves in the training group; B: ROC curves in the internal validation group; C: ROC curves in the external validation group. CR: Clinical-radiomics predictive model; T2WI: T2-weighted imaging; T1CE: Contrast-enhanced T1WI.