Joon Seok Lim MD, Abstract Co-Author: Nothing to Disclose

Myeong-Jin Kim MD, PhD, Abstract Co-Author: Nothing to Disclose

Yeo-Eun Kim MD, Presenter: Nothing to Disclose

Jin-Young Choi MD, Abstract Co-Author: Nothing to Disclose

Mi-Suk Park MD, Abstract Co-Author: Nothing to Disclose

Ki Whang Kim MD, Abstract Co-Author: Nothing to Disclose

The purpose of our study was to determine the relative utility of 3D T2-MRC by comparing the biliary tract visualization and the diagnostic accuracy for ductal anastomosis in liver donors for right lobe transplantation at 2D T2-MRC, 3D T2-MRC, and Gd BOPTA contrast enhanced (CE) T1-MRC.

The study was comprised of 33 candidates who underwent right lobectomy for liver transplantation. They underwent three kinds of MRC (2D T2-MRC, 3D T2-MRC and CE T1-MRC), preoperatively. Qualitative analyses were performed retrospectively in terms of visualizing the biliary ducts and the degree of image quality in each modality. Two months after the qualitative analyses, additional analyses were performed to evaluate the accuracy of the predicted number of orifices during right lobe harvesting in the four imaging sets (uncombined set: 2D T2-MRC and three kinds of combined sets: 2D T2-MRC and 3D T2- MRC, 2D T2- MRC and CE T1-MRC, all three examinations). The MRI definitions of the predicted number of ductal orifices were compared with the surgical findings.

Mean visualization scores of overall ducts for 3D T2-MRC were significantly higher than 2D T2-MRC and CE T1-MRC (p0.05).

3D T2-MRC was the best modality for biliary visualization and CE T1-MRC was the modality with the best image quality. For predicting the number of orifices, all combined sets enabled better accuracy and confidence than does 2D T2-MRC alone and produced comparable results in comparison within the combined sets

The combined sets of 2D and 3D T2-MRC may be enough in preoperative evaluation for right lobe donors and the addition of CE T1-MRC may be helpful limitedly when both T2-MRC have ambiquous findings.

Lim, J, Kim, M, Kim, Y, Choi, J, Park, M, Kim, K, Optimal MR Cholangiography for Evaluation of Hilar Branching Anatomy in Adult to Adult Transplantation of the Right Hepatic Lobe from a Living Donor: Comparison of 2D T2-MRC, 3D T2-MRC, and Gd BOPTA-enhanced T1-MRC.  Radiological Society of North America 2007 Scientific Assembly and Annual Meeting, November 25 - November 30, 2007 ,Chicago IL. http://archive.rsna.org/2007/5005397.html