Contrast-enhanced MR cholangiography with Gd-EOB-DTPA for preoperative biliary mapping: correlation with
Yedaun Lee1, So Yeon Kim2, Kyoung Won Kim3
1Department of Radiology and Research Institute of Radiology, University of Ulsan College of Medicine, Asan Medical Center, Seoul, Republic of Korea Department of Radiology, Inje University College of Medicine, Haeundae Paik Hospital, Busan, Republic of Korea.
Background:
Gd-EOB-DTPA-enhanced magnetic resonance (MR) could be used for preoperative evaluation of bile duct anatomy in addition to conventional information of focal hepatic lesions.
Purpose:
To evaluate accuracy of contrast-enhanced MR cholangiography (CE MRC) reconstructed from Gd-EOB-DTPA-enhanced MR images for depicting biliary anatomy with intraoperative cholangiography.
Material And Methods:
We retrospectively identified 71 patients who underwent both preoperative Gd-EOB-DTPA-enhanced MR imaging (MRI) and intraoperative cholangiography for hepatic resections. Two readers independently analyzed biliary anatomy using CE MRC reconstructed from transverse and coronal images separately in 4 weeks. The accuracy and diagnostic confidence were evaluated in correlation with intraoperative cholangiography. The accuracy and confidence score (3-point scale) were compared on CE MRCs from transverse versus coronal images.
Results:
CE MRCs correctly depicted biliary anatomy in 91.5% and 88.7% with coronal images and in 81.7% and 73.2% with transverse images for readers 1 and 2, respectively. CE MRCs from coronal images tended to show greater accuracy (P = 0.12 and 0.01, for readers 1 and 2) and higher confidence score (P = 0.11 and P = 0.04, for readers 1 and 2) than those from transverse images.
Conclusion:
Accurate preoperative biliary mapping can be achieved on CE MRC reconstructed from Gd-EOB-DTPA-enhanced MR images. The diagnostic performance was better on CE MRC reconstructed from coronal than those from transverse images.
