Intravenous, contrast-enhanced MR colonography using air as endoluminal contrast agent: Impact on colorectal polyp detection.
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Authors
Keeling, Aoife NMorrin, Martina M
McKenzie, Charles
Farrell, Richard J
Sheth, Sunil G
Ngo, Long
Bloch, B Nicolas
Pedrosa, Ivan
Rofsky, Neil M
Affiliation
Department of Radiology, Beaumont Hospital, Beaumont Road, Dublin 9, Ireland.Issue Date
2012-02-01T10:01:54Z
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Eur J Radiol. 2012 Jan;81(1):31-8. Epub 2010 Dec 4.Journal
European journal of radiologyDOI
10.1016/j.ejrad.2010.10.028PubMed ID
21131152Abstract
PURPOSE: To compare diagnostic accuracy and patient tolerance of MR colonography with intravenous contrast and luminal air (MRC) to conventional colonoscopy (CC). MATERIALS AND METHODS: IRB approval and written informed consent were obtained. Forty-six patients, both screening and symptomatic, underwent MRC followed by CC. The MRC technique employed 3D T1W spoiled gradient echo sequences performed after the administration of gadopenetate dimeglumine, with parallel imaging. The diagnostic accuracy and tolerance of patients for MRC was compared to CC. RESULTS: Twenty-four polyps were detected in eighteen patients with CC (5 polyps >/=10mm, 4 polyps 6-9mm, 15 polyps 6mm) was 100% (9/9) and 100% (15/15), respectively. Regarding tolerance of the exams, there were no significant differences between MRC and CC. Thirty-five percent (n=16) of patients preferred MRC as a future screening test compared to 33% (n=15) for CC. CONCLUSION: MRC using air as an intraluminal contrast agent is a feasible and well-tolerated technique for detecting colonic polyps >/=6mm in size. Further studies are warranted.Language
engISSN
1872-7727 (Electronic)0720-048X (Linking)
ae974a485f413a2113503eed53cd6c53
10.1016/j.ejrad.2010.10.028