title: Cholescintigraphy and sonography in the diagnosis of biliary tract disease: a retrospective study.
mesh_terms: D001659:Biliary Tract / Q000000981:diagnostic imaging*; D001660:Biliary Tract Diseases / Q000175:diagnosis*; D006801:Humans; D007098:Imino Acids; D011877:Radionuclide Imaging; D012189:Retrospective Studies; D013667:Technetium; D014463:Ultrasonography
chemical_list: D007098:Imino Acids; D013667:Technetium