Preoperatively predicting vessels encapsulating tumor clusters in hepatocellular carcinoma: Machine learning model based on contrast-enhanced computed tomography

Figure 6 The radiomics nomogram and calibration curves for the radiomics nomogram. A: The radiomics nomogram combining intratumor necrosis, main tumor size, and radiomics score, was developed on the training set; B: Calibration curves for the radiomics nomogram on the training set; C: Calibration curves for the radiomics nomogram on the internal test set; D: Calibration curves for the radiomics nomogram on the external test set.