title: Application of gray-scale ultrasonography in the patient with suspected biliary tract disease.
mesh_terms: D001649:Bile Duct Diseases / Q000175:diagnosis; D001660:Biliary Tract Diseases / Q000175:diagnosis; D002765:Cholecystography; D004108:Dilatation, Pathologic; D005704:Gallbladder / Q000033:anatomy & histology; D005705:Gallbladder Diseases / Q000175:diagnosis* / Q000000981:diagnostic imaging; D006801:Humans; D007565:Jaundice / Q000175:diagnosis; D014057:Tomography, X-Ray Computed; D014463:Ultrasonography