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J Magn Reson Imaging. 2017 Dec;46(6):1656-1663. doi: 10.1002/jmri.25715. Epub 2017 Mar 23.

MR cholangiography in potential liver donors: quantitative and qualitative improvement with administration of an oral effervescent agent.

Author information

1
Department of Radiology, Kangbuk Samsung Hospital, Sungkyunkwan University School of Medicine, Seoul, Korea.
2
Department of Radiology and the Research Institute of Radiology, University of Ulsan College of Medicine, Asan Medical Center, Seoul, Korea.
3
Department of Radiology, Dongguk University Ilsan Medical Center, Goyang-si, Gyeonggi-do, Korea.
4
School of Computer Science and Engineering, Soongsil University, Seoul, Korea.
5
Division of Liver Transplantation and Hepatobiliary Surgery, and Departments of Surgery, University of Ulsan College of Medicine, Asan Medical Center, Seoul, Korea.

Abstract

PURPOSE:

To determine whether an oral effervescent agent improves magnetic resonance cholangiography (MRC) images, both qualitatively and quantitatively, in potential live liver donors.

MATERIALS AND METHODS:

This retrospective study was approved by the Institutional Review Board, and informed consent was waived. Seventy potential liver donors underwent 2D MRC before and after administration of an oral effervescent agent. One radiologist measured relative contrast ratio (rC) and relative signal intensity (rS) for right and left intrahepatic ducts (RHD and LHD), and common hepatic duct (CHD). After assessment of overall image quality, two other radiologists independently scored visualization of five ductal segments (RHD, LHD, CHD, cystic, and common bile duct) and assessed the preferred image set. In consensus, they assessed the biliary anatomy. The data were analyzed using a paired t-test, Wilcoxon's signed-rank test, and chi-square test.

RESULTS:

Both rC and rS of RHD and CHD were significantly higher on MRC images after administration of an oral effervescent agent than before (P < 0.03). The overall image quality grades and biliary visualization scores for all five duct segments were significantly higher on MRC images after administration of an oral effervescent agent than before (P < 0.0001). Between these images, both readers more often preferred MRC images with an effervescent agent rather than those without this agent (reader 1: 56/70, 80.0%; reader 2: 55/70, 78.6%; P = 0.0003). The readers correctly assessed second-order biliary tract anatomy in two more subjects on MRC after administration of an effervescent agent than before.

CONCLUSION:

Oral administration of an effervescent agent improves MRC images, both qualitatively and quantitatively, in live liver donors.

LEVEL OF EVIDENCE:

3 Technical Efficacy: Stage 2 J. Magn. Reson. Imaging 2017;46:1656-1663.

KEYWORDS:

bile duct; liver transplantation; magnetic resonance cholangiography; oral effervescent agent

PMID:
28334490
DOI:
10.1002/jmri.25715
[Indexed for MEDLINE]

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