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Abstract #1280

Bowel Motility Assessment During Free Breathing Using Continuously Tagged MR Imaging

Marije P. van der Paardt1, Andr M.J. Sprengers1, Rolf M. Lamerichs1, 2, Aart J. Nederveen1, Jaap Stoker1

1Department of Radiology, Academic Medical Center Amsterdam, Amsterdam, Netherlands; 2Philips , Eindhoven, Netherlands

This study presents bowel motility assessment with Continuously Tagged MR imaging. This technique employs conventional MR-tagging, modified for non-periodic motion, from which spectral information was extracted when the tag pattern was deformed by tissue motion. Spectral analysis for different frequencies was performed. This non-invasive, free breathing and automated technique detected changes in bowel motility in a group of ten healthy volunteers after administration of a spasmolytic agent. Both in lower and higher frequencies significant decrease in motility was observed.

Keywords

ability academic acquisition administered administration agent allowing alterations anonymous applied approval assess assessment automated bands blue bowel breathing broad capable cause challenge channel coil committee consent continuously coronal correspond coverage dataset decrease decreases deformation deformed delay demonstrating divided domain done dynamic eight employs enables enabling equal ethical evaluation except extract extracted fashion fasted field fields frame frames free frequencies frequency green healthy heterogeneity hours illustrates index indicating individuals induces informed intestine intravenously invasive isotropic lies long lowest manipulate maximal medical minutes modified motility motion noticeable noticed obvious octant oral outer paired pattern period periodic periods perspective position post power preparation prior processing quantification radiology ranging readout received recently repeated represents resolution sampling scanned scanner sense separate sets sixteen slice slices solution spectra spectral statistical stoker stripe subjects successfully supine tagged tagging temporal tissue torso visualization volume volunteer volunteers written yellow