Objective: to compare the morphologic findings of the common bile duct by ultrasonography and endoscopic retrograde cholangiopancreatography (ERCP) in patients with biliary acute pancreatitis.

Endoscopic ultrasonography (EUS) is one of the most important tools for imaging and accessing the pancreatic biliary system.

Objective To observe value of MRI and high-frequency ultrasonography (HUS) in differential diagnosis of biliary atresia (BA) from non-biliary atresia (non-BA).