title: The single cannula method.
abstract: The single cannula method adds a useful technique to methods of performing preoperative cholangiography. Its main advantages are evident in the more difficult tasks of obtaining satisfactory postexploration (completion) roentgenograms where it adds an alternative technique to the two methods available.
mesh_terms: D002404:Catheterization; D002758:Cholangiography / Q000379:methods*; D003549:Cystic Duct / Q000000981:diagnostic imaging*; D006801:Humans