Fig. 5

Radiomics nomogram and calibration curves. a Radiomics nomogram integrated with age, signal, boundaries, and radiomics signature, developed in the training set. Calibration curves of the radiomics nomogram in the training (b) and validation (c) sets. Calibration curves indicate the goodness-of-fit of the nomogram. The 45° gray line represents the ideal prediction. The apparent line is the calibration accuracy of the original date. The bias-corrected line is derived via 1000 repetitions of bootstrapping, which corrects the overfitting. A closer distance between the two curves indicates better prediction accuracy of the radiomics nomogram