CT cholangiography

CT cholangiography is a technique of imaging the biliary tree with the usage of hepatobiliary excreted contrast. It is very good at delineating biliary anatomy.

Second-line test (after ultrasound) when investigating for right upper quadrant pain, obstructive LFTs, etc. It can also be used in the postoperative setting (e.g. post cholecystectomy) where there is concern for a bile leak.

CT cholangiography may be performed with either intravenous or oral cholangiographic contrast agents both of which outline the biliary tree with positive contrast.

Agents
  • bilirubin should be < 30 mmol/L nor should it be rising rapidly
  • ideally liver function should be normal or near normal
  • need to ensure that there are no contrast allergies

Occasionally vicarious contrast material excretion can give opacification of the gallbladder and biliary system

 


CT examinations
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Article Information

rID: 35600
Section: Physics
Synonyms or Alternate Spellings:
  • CT cholangiogram
  • CT intravenous cholangiograms (CT IVC)
  • CT intravenous cholangiography (CT IVC)

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Cases and Figures

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    Case 1: normal CT cholangiogram
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    Case 2
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    MIP
    Case 3
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    MIP of post IV Bi...
    Case 4
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    Case 5
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    Case 6: obstructive choledocolithiasis
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