Colon wall motility: comparison of novel quantitative semi-automatic measurements using cine MRI

Hoad, Caroline and Menys, A. and Garsed, Klara and Marciani, Luca and Hamy, Valentin and Murray, Kathryn and Costigan, Carolyn and Atkinson, D. and Major, Giles and Spiller, Robin C. and Taylor, S. and Gowland, Penny A. (2016) Colon wall motility: comparison of novel quantitative semi-automatic measurements using cine MRI. Neurogastroenterology and Motility, 28 (3). pp. 327-335. ISSN 1365-2982

[img]
Preview
PDF - Requires a PDF viewer such as GSview, Xpdf or Adobe Acrobat Reader
Download (1MB) | Preview

Abstract

Background

Recently, cine magnetic resonance imaging (MRI) has shown promise for visualizing movement of the colonic wall, although assessment of data has been subjective and observer dependent. This study aimed to develop an objective and semi-automatic imaging metric of ascending colonic wall movement, using image registration techniques.

Methods

Cine balanced turbo field echo MRI images of ascending colonic motility were acquired over 2 min from 23 healthy volunteers (HVs) at baseline and following two different macrogol stimulus drinks (11 HVs drank 1 L and 12 HVs drank 2 L). Motility metrics derived from large scale geometric and small scale pixel movement parameters following image registration were developed using the post ingestion data and compared to observer grading of wall motion. Inter and intra-observer variability in the highest correlating metric was assessed using Bland–Altman analysis calculated from two separate observations on a subset of data.

Key Results

All the metrics tested showed significant correlation with the observer rating scores. Line analysis (LA) produced the highest correlation coefficient of 0.74 (95% CI: 0.55–0.86), p < 0.001 (Spearman Rho). Bland–Altman analysis of the inter- and intra-observer variability for the LA metric, showed almost zero bias and small limits of agreement between observations (−0.039 to 0.052 intra-observer and −0.051 to 0.054 inter-observer, range of measurement 0–0.353).

Conclusions & Inferences

The LA index of colonic motility derived from cine MRI registered data provides a quick, accurate and non-invasive method to detect wall motion within the ascending colon following a colonic stimulus in the form of a macrogol drink.

Item Type: Article
Additional Information: This is the peer reviewed version of the following article: Hoad, C. L., Menys, A., Garsed, K., Marciani, L., Hamy, V., Murray, K., Costigan, C., Atkinson, D., Major, G., Spiller, R. C., Taylor, S. A. and Gowland, P. A. (2016), Colon wall motility: comparison of novel quantitative semi-automatic measurements using cine MRI. Neurogastroenterol. Motil., 28: 327–335, which has been published in final form at http://dx.doi.org/10.1111/nmo.12727. This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Self-Archiving.
Keywords: ascending colon; cine MRI; imaging metric; motility
Schools/Departments: University of Nottingham, UK > Faculty of Medicine and Health Sciences > School of Medicine
University of Nottingham, UK > Faculty of Science > School of Physics and Astronomy
Identification Number: https://doi.org/10.1111/nmo.12727
Depositing User: Eprints, Support
Date Deposited: 05 Jan 2017 12:09
Last Modified: 06 Jan 2017 05:28
URI: http://eprints.nottingham.ac.uk/id/eprint/39606

Actions (Archive Staff Only)

Edit View Edit View