title: Evaluation of biliary tract disease by diagnostic ultrasound.
abstract: Diagnostic ultrasound is useful in evaluation in biliary tract disease because it is independent of function, rapidly performed, and noninvasive. In most cases the presence or absence of obstruction as well as the etiology of the obstruction can be made.
mesh_terms: D001660:Biliary Tract Diseases / Q000175:diagnosis*; D002769:Cholelithiasis / Q000175:diagnosis; D042882:Gallstones / Q000175:diagnosis; D006801:Humans; D014463:Ultrasonography