Magnetic Resonance Cholangiopancreatography (MRCP) of the Abdomen — With or Without Intravenous Contrast

What is this test?

Magnetic resonance cholangiopancreatography, or MRCP, is a specialized MRI examination that produces detailed images of the bile ducts, pancreatic ducts, and gallbladder. Depending on the examination protocol, images may be obtained before and after intravenous contrast is given.

Why might I need this test?

MRCP may be recommended to investigate suspected gallstones, bile or pancreatic duct obstruction, narrowed ducts, or inflammation of the gallbladder or pancreas. It may also be used when ultrasound or CT results are unclear or when avoiding radiation is important.

How is the test performed?

You usually lie on a table inside an MRI scanner while the machine takes several sets of images. You may be asked to hold very still and follow breathing instructions. If contrast is used, it is given through a vein in your arm; you may feel a brief cool sensation when it is injected.

How do I prepare for the test?

Preparation varies by imaging center, so follow the instructions provided for your appointment. Tell the care team if you have previously had a serious reaction to MRI contrast, have kidney disease, are pregnant or may be pregnant, or have a pacemaker, implanted metal device, or other metal in your body. Some centers may ask you to fast briefly before the examination.