Recent advances in magnetic resonance imaging (MRI) have made imaging the biliary tract faster while providing excellent anatomic reproduction of this duct system. MRI/MR-cholangiopancreatography (MRCP) has now become the first-line imaging procedure for many biliary tract problems. This work briefly discusses the MR techniques for biliary tree imaging and reviews MRI's role in the numerous diagnoses of filling defects in the biliary tract.
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