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Contrast Agent Allows Quicker, More Thorough MRI Screening Of Living Liver Donors Before Surgery

Date:
August 5, 2005
Source:
American Roentgen Ray Society
Summary:
A single dose of the contrast agent gadobenate dimeglumine can help liver donors avoid multiple MRI examinations during the screening process, cutting down on time and cost without compromising accuracy, say researchers from the Yonsei University College of Medicine in Seoul, Korea.

A single dose of the contrast agent gadobenate dimeglumine can help liver donorsavoid multiple MRI examinations during the screening process, cutting down ontime and cost without compromising accuracy, say researchers from the Yonsei UniversityCollege of Medicine in Seoul, Korea.

For the study, 11 potential liver donors underwent MRI examinations after asingle dose of gadobenate dimeglumine in order to screen them for donor adequacy.The researchers were able to find anatomical abnormalities in six of the patientsthat potentially could have affected either the selection or the surgery process.The MRI results were all corroborated at surgery.

"Preoperative imaging is crucial for both the selection of potential livingliver donors and the planning of surgery because it reveals the exact anatomyof the donor liver. By performing MRI on a potential donor, doctors can assessany abnormality or variation in the liver itself, its vessels or its bile duct.To improve the accuracy of MRI, contrast media is used," said Myeong-JinKim, MD, one of the researchers on the study.

According to the researchers, there are different types of contrast agents.The more widely used (gadolinium-based agents) are good for imaging the liverand pathologic lesions and vessels, but not the bile duct. Other types (suchas mangafodipir trisodium) can improve imaging of the liver and bile duct, butnot the vessels. "As a result, the potential donor may need to undergotwo separate MRI examinations so that the different contrast agents can be used.Gadobenate dimeglumine can help image the liver, bile duct and vessels all atonce," said Dr. Kim.

"Our study shows that the use of this new agent may decrease the examinationcosts and time for preoperative MRI for potential living liver donors. By accurateevaluation of both vascular and biliary anatomy, adequate preoperative planningcan be ensured and it may be helpful to decrease the potential postoperativecomplications," said Dr. Kim.

The study appears in the August 2005 issue of the American Journal of Roentgenology.


Story Source:

The above story is based on materials provided by American Roentgen Ray Society. Note: Materials may be edited for content and length.


Cite This Page:

American Roentgen Ray Society. "Contrast Agent Allows Quicker, More Thorough MRI Screening Of Living Liver Donors Before Surgery." ScienceDaily. ScienceDaily, 5 August 2005. <www.sciencedaily.com/releases/2005/08/050805065223.htm>.
American Roentgen Ray Society. (2005, August 5). Contrast Agent Allows Quicker, More Thorough MRI Screening Of Living Liver Donors Before Surgery. ScienceDaily. Retrieved October 20, 2014 from www.sciencedaily.com/releases/2005/08/050805065223.htm
American Roentgen Ray Society. "Contrast Agent Allows Quicker, More Thorough MRI Screening Of Living Liver Donors Before Surgery." ScienceDaily. www.sciencedaily.com/releases/2005/08/050805065223.htm (accessed October 20, 2014).

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