Clinical Research Directory

Inclusion Criteria: (1) age 18-70 years; (2) liver examination performed for all patients prior to US-guided liver biopsy or surgery; (3) tumor can be visualized in conventional US; (4) largest tumor sectional area saved in DICOM format for use in later analyses; (5) a histopathological diagnosis made either from US-guided liver biopsy or surgical resection; (6) suitable routine clinical and US data obtained within 7 days of the histopathological diagnosis. Exclusion Criteria: (1) unavailable pathological diagnosis; (2) liver metastatic tumors; (3) poor quality US images; and (4) a past history of surgical resection, percutaneous local ablation, radiation, transarterial and systemic therapies or liver transplantation.