Inclusion Criteria:  Patients at risk for HCC(Cirrhosis or Chronic hepatitis B viral infection or Current or prior HCC) Suspicious lesions detected by CECT/MRI but not visible on conventional ultrasound and US-CECT/MRI fusion imaging Patients sign the informed consent.  Exclusion Criteria:  Patients without risk of HCC(With cirrhosis due to congenital hepatic fibrosis or With cirrhosis due to a vascular disorder such as hereditary hemorrhagic telangiectasia, Budd-Chiari syndrome, chronic portal vein occlusion, cardiac congestion, or diffuse nodular regenerative hyperplasia) Patients without a successful registration or lesions can be seen on conventional ultrasound after successful registration Pregnancy or lactation Patients with pretreat lesion Patients don't sign the informed consent.