Contrast (Sonazoid)-Enhanced US as a Screening Tool for Hepatocellular Carcinoma in Cirrhosis: An Exploratory Cross-sectional Study

Inclusion Criteria: 1. Patient 20 years old or older, 2. Patient at high risk of HCC and is supposed to take ultrasonography, 3. Patient who has no suspicious HCC on previous examinations or patient who undergoes the first surveillance, 4. Patient who has liver cirrhosis proven by one of the following methods-liver biopsy (METAVIR score 4), identification of esophageal or gastric varix by endoscopically or radiologically, surface nodularity on ultrasonography, CT or MRI, platelet count less than 100,000/mm3, serum albumin less than 3.5 g/dl, or prothrombin time higher than 1.3 INR, 5. Patient without contraindication for sonazoid, 6. Patient willing to sign the informed consent Exclusion Criteria: 1. Patient on pregnancy or breast feeding, 2. Patient with allergy to egg, 3. Patient with left-to-right shunt, respiratory insufficiency, or severe pulmonary hypertension, 4. Patient with history of HCC, 5. Patient with history of malignancy other than HCC -