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BMC Medical Imaging
Published in: BMC Medical Imaging 1/2014

Open Access 01-12-2014 | Research article

3D-MRCP for evaluation of intra- and extrahepatic bile ducts: comparison of different acquisition and reconstruction planes

Authors: Kristina Imeen Ringe, Dagmar Hartung, Christian von Falck, Frank Wacker, Hans-Jürgen Raatschen

Published in: BMC Medical Imaging | Issue 1/2014

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Abstract

Background

Magnetic resonance cholangiopancreatography (MRCP) is an established technique for the evaluation of intra- and extrahepatic bile ducts in patients with known or suspected hepatobiliary disease. However, the ideal acquisition and reconstruction plane for optimal bile duct evaluation with 3D technique has not been evaluated. The purpose of our study was to compare different acquisition and reconstruction planes of 3D-MRCP for bile duct assessment.

Methods

34 patients (17f/17 m, mean age 41y) referred for MRCP were included in this prospective IRB-approved study. Respiratory-triggered 3D-T2w-MRCP sequences were acquired in coronal and axial plane. Coronal and axial MIP were reconstructed based on each dataset (resulting in two coronal and two axial MIP, respectively). Three readers in two sessions independently assessed the MIP, regarding visualization of bile ducts and image quality. Results were compared (Wilcoxon test). Intra- and interobserver variability were calculated (kappa-statistic).

Results

In case of coronal data acquisition, visualization of bile duct segments was significantly better on coronal reconstructed MIP images as compared to axial reconstructed MIP (p < 0.05). Regarding visualization, coronal MIP of the coronal acquisition were equal to coronal MIP of the axial acquisition (p > 0.05). Image quality of coronal and axial datasets did not differ significantly. Intra- and interobserver agreement regarding bile duct visualization were moderate to excellent (κ-range 0.55-1.00 and 0.42-0.85, respectively).

Conclusions

The results of our study suggest that for visualization and evaluation of intra- and extrahepatic bile duct segments reconstructed images in coronal orientation are preferable. The orientation of the primary dataset (coronal or axial) is negligible.
Appendix
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Metadata
Title
3D-MRCP for evaluation of intra- and extrahepatic bile ducts: comparison of different acquisition and reconstruction planes
Authors
Kristina Imeen Ringe
Dagmar Hartung
Christian von Falck
Frank Wacker
Hans-Jürgen Raatschen
Publication date
01-12-2014
Publisher
BioMed Central
Published in
BMC Medical Imaging / Issue 1/2014
Electronic ISSN: 1471-2342
DOI
https://doi.org/10.1186/1471-2342-14-16

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