Ultrasonography of the biliary tract.
D001652:Bile Ducts / Q000033:anatomy & histology; D001659:Biliary Tract / Q000033:anatomy & histology*; D001707:Biopsy, Needle; D002764:Cholecystitis / Q000175:diagnosis; D002769:Cholelithiasis / Q000175:diagnosis; D002779:Cholestasis / Q000175:diagnosis; D005704:Gallbladder / Q000033:anatomy & histology; D005706:Gallbladder Neoplasms / Q000175:diagnosis; D006801:Humans; D008722:Methods; D014463:Ultrasonography