Fig. 4

Construction and validation of the NRI-M model. The NRI-M model was developed with integration of MRI radiomics classifier into the NRI. A the overall survival (OS) after stratification by the NRI-M for all patients; B the OS after stratification by the NRI-M for early-stage patients; C the calibration curve of the NRI-M for all patients; D the calibration curve of the NRI-M for early-stage patients. MRI, magnetic resonance imaging; NRI, nomogram-revised risk index; NRI-M, NRI plus multi-modal MRI radiomics signature; AUC, area under the curve