TITLE

Magnetic resonance colonography for the detection of inflammatory diseases of the large bowel: quantifying the inflammatory activity

AUTHOR(S)
Ajaj, W. M.; Lauenstein, T. C.; Peister, G.; Gerken, G.; Ruehm, S. G.; Debatin, J. F.; Goehde, S. C.
PUB. DATE
February 2005
SOURCE
Gut;Feb2005, Vol. 54 Issue 2, p257
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
Introduction: The purpose of this study was to assess the diagnostic accuracy of magnetic resonance colonography (MRC) for its ability to detect and quantify inflammatory bowel disease (IBD) affecting the colon. Endoscopically obtained histopathology specimens were used as the standard of reference. Materials and methods: Fifteen normal subjects and 23 patients with suspected IBD of the large bowel underwent MRC. Three dimensional Ti weighted data sets were collected following rectal administration of water prior to and 75 seconds after intravenous administration of paramagnetic contrast (gadolinium- BOPTA). The presence of inflammatory changes in patients was documented based on bowel wall contrast enhancement, bowel wall thickness, presence of perifocal lymph nodes, and loss of haustral folds. All four criteria were quantified relative to data obtained from normal subjects and summarised in a single score. This MRC based score was compared with histopathological data based on conventional endoscopic findings. Results: MRC correctly identified 68 of 73 segments found to reveal IBD changes by histopathology. All severely inflamed segments were correctly identified as such and there were no false positive findings. Based on the proposed composite score, MRC detected and characterised clinically relevant IBD of the large bowel with sensitivity and specificity values of 87% and 100%, respectively, for all investigated colonic segments. Conclusion: MRC may be considered a promising alternative to endoscopic biopsy in monitoring !BD activity or assessing therapeutic effectiveness.
ACCESSION #
16163553

 

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