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There are at least four types of cholangiography:
- Percutaneous transhepatic cholangiography (PTC): Examination of liver and bile ducts by x-rays. This is accomplished by the insertion of a thin needle into the liver carrying a contrast medium to help to see blockage in liver and bile ducts.
- Endoscopic retrograde cholangiopancreatography (ERCP). Although this is a form of imaging, it is both diagnostic and therapeutic, and is often classified with surgeries rather than with imaging.
- Primary cholangiography (or perioperative): Done in the operation room during a biliary drainage intervention.
- Secondary cholangiography: Done after a biliary drainage intervention.
- Magnetic resonance cholangiopancreatography (MRCP) is another cholangiography method.
- "Cholangiography | Gallbladder cancer | Cancer Research UK". www.cancerresearchuk.org. Retrieved 2021-01-04.