Strictly speaking, CT cannot be used as a criterion to confirm the diagnosis of hepatocellular carcinoma, but since currently in clinical practice, enhanced CT or enhanced MRI, according to statistical analysis of imaging, is found to have a positive diagnostic conformity rate of over 95% with hepatocellular carcinoma. Therefore, at present, if enhanced CT suggests hepatocellular carcinoma, which means more than 95% of patients are hepatocellular carcinoma, it can be used as a relative diagnostic criterion. In clinical practice, for liver cancer or other malignant tumors, the gold standard for confirming the diagnosis is to find malignant tumor cells in pathology before it can be diagnosed as malignant tumor. Therefore, strictly speaking, the diagnosis of liver cancer must be confirmed by liver puncture biopsy or surgical resection and pathological confirmation to find liver cancer cells before it can be diagnosed as liver cancer.