Editing Cholangiography (section)

==Types==
There are at least four types of cholangiography:{{cn|date=January 2022}}

# [[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.

In both cases [[fluorescent]] fluids are used to create contrasts that make the diagnosis possible. Cholangiography has largely replaced the previously used method of [[intravenous cholangiography]] (IVC).{{cn|date=January 2022}}
* [[Magnetic resonance cholangiopancreatography]] (MRCP) is another cholangiography method.