What is cholangiography?
A cholangiogram is an imaging test specifically designed to identify abnormalities in the bile ducts such as a block, narrowing or dilation (widening).
For this procedure, a contrast dye is injected into the body, and then X-rays are taken to reveal any bile duct obstructions.
Cholangiography for gallbladder cancer
This special test allows your doctor to look at the bile ducts, and can also help in planning surgery. This test may be performed either by using an MRI machine, an endoscope or by inserting a needle through the skin of the abdomen.
An angiography is another procedure that may be used to detect gallbladder cancer. The procedure is the same as a cholangiography, except the dye is used to examine blood vessels and flow around the gallbladder and possible turmor.
For this procedure, a contrast dye is injected into the body, and then X-rays are taken to reveal the gallbladder and surrounding areas.