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Quantified terminal ileal motility during MR enterography as a potential biomarker of Crohn's disease activity: a preliminary study.
MedLine Citation:
PMID:  22661057     Owner:  NLM     Status:  Publisher    
Abstract/OtherAbstract:
OBJECTIVE: To compare quantified terminal ileal (TI) motility during MR enterography (MRE) with histopathological severity of acute inflammation in Crohn's disease. METHODS: A total of 28 Crohn's patients underwent MRE and endoscopic TI biopsy. Axial and coronal TrueFISP, HASTE and post-gadolinium VIBE images were supplemented by multiple coronal TrueFISP cine motility sequences through the small bowel volume. TI motility index (MI) was quantified using validated software; an acute inflammation score (eAIS; 0-6) was assigned to the biopsy. Two observers qualitatively scored mural thickness, T2 signal, contrast enhancement and perimural oedema (0-3) to produce an activity score (aMRIs) based on anatomical MRI. The association among the MI, eAIS and aMRIs was tested using Spearman's rank correlation. Wilcoxon rank sum test compared motility in subjects with and without histopathological inflammation. RESULTS: Mean MI and mean eAIS were 0.27 (range 0.06-0.55) and 1.5 (range 0-5), respectively. There was a significant difference in MI between non-inflamed (mean 0.37, range 0.13-0.55) and inflamed (mean 0.19, range 0.06-0.44) TI, P = 0.002, and a significant negative correlation between MI and both eAIS (Rho = -0.52, P = 0.005) and aMRIs (R = -0.7, P < 0.001). CONCLUSION: Quantified TI motility negatively correlates with histopathological measures of disease activity and existing anatomical MRI activity biomarkers. KEY POINTS: • Magnetic resonance imaging is increasingly used to assess Crohn's disease. • MRI measurements can provide a quantitative assessment of small bowel motility. • MR enterography can grade Crohn's disease. • Small bowel motility can be used as a marker of inflammatory activity.
Authors:
Alex Menys; David Atkinson; Freddy Odille; Asia Ahmed; Marco Novelli; Manuel Rodriguez-Justo; Ian Proctor; Shonit Punwani; Steve Halligan; Stuart A Taylor
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Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2012-6-3
Journal Detail:
Title:  European radiology     Volume:  -     ISSN:  1432-1084     ISO Abbreviation:  -     Publication Date:  2012 Jun 
Date Detail:
Created Date:  2012-6-4     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  9114774     Medline TA:  Eur Radiol     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
Affiliation:
Centre for Medical Imaging, University College London, London, UK.
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