- This 2D animation shows how this radiographic test intraoperatively evaluates for either blockage or leakage in the biliary tree.
- This test can be performed prior to removing the gallbladder, or at any time a problem is suspected. A tiny catheter is threaded through a small incision in the cystic duct. Dye is injected into the biliary tract and x-rays are taken, allowing the surgeon to see which ducts are patent. Voids represent stones or tumors, and extravasation represents a leak in the system.
- While this test is very reliable in the case of a retained stone or suspected damage, studies have found that patient outcome is the same whether or not a patient undergoes routine intraoperative cholangiography.