Radiomic analysis based on multi-phase magnetic resonance imaging to predict preoperatively microvascular invasion in hepatocellular carcinoma

Figure 6 Area under the receiver operating characteristic curve of the final model. A: Receiver operating characteristic (ROC) curves of the selected model and the ROC curve of the 5-fold cross-validation; B: Nomogram of the integrated model. Hepatobiliary phase (HBP) means peritumoral hypointensity in the HBP, most discriminant factor (MDF)_AP means the MDF of the arterial phase, and MDF_PVP means the MDF of the portal venous phase; C: Comparison of ROC curves for prediction of microvascular invasion. The area under the ROC curve (AUC) was largest for the MDF_PVP alone (AUC = 0.881). ARE: Arterial rim enhancement; MTD: Maximum tumor diameter; PHOH: Peritumoral hypointensity in the HBP; TM: Tumor margin.