Tje physiologic basis of cholangiographic interpretation: pseudocalculus sign and problem of duct spasm.
D001660:Biliary Tract Diseases / Q000000981:diagnostic imaging*; D002758:Cholangiography; D003135:Common Bile Duct / Q000502:physiology*; D003937:Diagnosis, Differential; D004386:Duodenum / Q000000981:diagnostic imaging; D042882:Gallstones / Q000000981:diagnostic imaging*; D006801:Humans; D013035:Spasm / Q000000981:diagnostic imaging*