Bilious fluid demonstrates variable signal intensity on T1-weighted imaging, and high signal intensity on T2-weighted imaging, similar to the signal intensity of gallbladder fluid.Both gadolinium and manganese-based MRI contrast agents that are excreted through the biliary system are available. A delayed enhanced MRI examination using one of these agents may be useful to confirm that a localised fluid collection is composed of bile and to identify the site of bile leak 7.
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