Eun Suk Cho, Presenter: Nothing to Disclose

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

Jeong-Sik Yu, Abstract Co-Author: Nothing to Disclose

To compare diagnostic accuracy of MDCT and MR cholangiography in evaluating the extent of biliary involvement of hilar cholangiocarcinoma

33 patients with suspected hilar cholangiocarcinoma underwent contrast-enhanced MDCT (using 4- and 16-slice scanners with a high resolution protocol), MR Cholangiography (single shot RARE and multislice half-Fourier RARE sequence), and direct cholangiography. Among them, 14 patients underwent surgical resection. Two radiologists determined ductal extension of tumor on MDCT and MRI, in consensus. In operated patients, diagnostic accuracy of MDCT and MRC was calculated according to surgical and pathologic records. In non-operated patients, consistency of MDCT and MRC with direct cholangiography was calculated

In operated patients, diagnostic accuracy of MDCT was 64.3% and that of MR cholangiography was 71.4%, which showed no statistical difference between them (p=0.93). In non-operated patients, consistency of MDCT with direct cholangiography was 73.7%, and that of MR cholangiography was 94.7%, which showed no statistical difference (p=0.58). MR cholangiography was superior to MDCT in evaluating associated ductal anomaly because it provided projection images. However, MDCT provided higher resolution in tumor visualization

MR cholangiography was slightly superior to MRCT in evaluating the extent of biliary involvement without statistical significance.

Cho, E, Park, M, Yu, J, The Extent of Biliary Involvement in Hilar Cholangiocarcinoma: Multidetector CT (MDCT) versus MR Cholangiography.  Radiological Society of North America 2005 Scientific Assembly and Annual Meeting, November 27 - December 2, 2005 ,Chicago IL. http://archive.rsna.org/2005/4419778.html