Contract cholangiography.
Clinical, operative, and conventional radiological criteria may provide insufficient indications for exploration of the common bile duct. The technique of contact cholangiography improves the radiographic definition, especially in the obese, and has resulted in more positive choledochotomies and in fewer negative explorations.
D002758:Cholangiography / Q000379:methods*; D003135:Common Bile Duct / Q000601:surgery*; D006801:Humans; D008722:Methods