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Dynamic MR imaging of the biliary system using hepatocyte-specific contrast agents
Rajan T Gupta1, Christopher M Brady, Joachim Lotz
1Department of Radiology, Duke University Medical Center, Durham, NC 27710, USA. rajan.gupta@duke.edu
AJR. American Journal of Roentgenology
|July 24, 2010
Summary
Gadolinium-based, hepatocyte-specific MRI contrast agents offer an off-label method for evaluating the biliary system. These agents visualize biliary anatomy, choledocholithiasis, and acute cholecystitis during the hepatocyte phase post-injection.
Area of Science:
- Hepatobiliary Imaging
- Medical Imaging
- Radiology
Background:
- Hepatocyte-specific MRI contrast agents are primarily used for liver imaging.
- Their excretion pathways involve both the kidneys and the liver.
Purpose of the Study:
- To demonstrate the utility of hepatocyte-specific MRI contrast agents for dynamic biliary system evaluation.
- To explore off-label applications of these agents in biliary tract imaging.
Main Methods:
- Utilizing gadolinium-based, hepatocyte-specific MRI contrast agents.
- Acquiring images during the hepatocyte phase (20-40 minutes post-injection).
- Assessing biliary anatomy, choledocholithiasis, and acute cholecystitis.
Main Results:
- Demonstrated visualization of variant biliary anatomy.
- Identified choledocholithiasis.
- Evaluated acute cholecystitis by assessing cystic duct contrast reflux.
- Showcased utility in pre- and post-surgical imaging.
- Facilitated evaluation of choledochal cysts.
Conclusions:
- Hepatocyte-specific MRI contrast agents are valuable for off-label biliary tract evaluation.
- These agents aid in diagnosing various biliary conditions and surgical planning.
- Dynamic imaging during the hepatocyte phase provides crucial diagnostic information.
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