AFP and hepatocellular carcinoma: It was found that the AUC of AFP in distinguishing stage I-II from stage III-IV patients was 0.715, with a specificity of 69.69% and a sensitivity of 70.58%, while the AUC of Ktrans and Kep in distinguishing patients with HCC and those with benign nodules was 0.801 and 0.806, with specificity of 72.72% and 76.47% and sensitivity of 72.72% and 82.35%, respectively.