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[Visualization and quantification of large bowel motility with functional cine-MRI]
S Buhmann1, C Kirchhoff, C Wielage
1Institut für Klinische Radiologie, Klinikum der Universität München. Sonja.Buhmann@med.uni-muenchen.de
Rofo : Fortschritte Auf Dem Gebiete Der Rontgenstrahlen Und Der Nuklearmedizin
|January 20, 2005
Summary
Functional cine MRI visualizes and quantifies large bowel motility. This non-invasive method uses a prokinetic stimulus to assess bowel dynamics, offering a new tool for clinical evaluation.
Area of Science:
- Gastroenterology
- Medical Imaging
- Physiology
Background:
- Assessing large bowel motility is crucial for diagnosing gastrointestinal disorders.
- Current methods for evaluating bowel motility can be invasive or lack detailed functional information.
Purpose of the Study:
- To develop and validate a non-invasive functional cine MRI technique for visualizing and quantifying large bowel motility.
- To assess the changes in colonic diameter as a measure of motility.
Main Methods:
- Functional cine MRI was performed on 15 healthy volunteers before and after oral administration of Senna tea.
- Coronal T2-weighted HASTE sequences were used with respiratory gating.
- Changes in colonic diameter at multiple sites were measured to quantify motility.
Main Results:
- Senna tea administration led to statistically significant increases in mean colonic diameter.
- Motility analysis showed increased dynamic range in the ascending and descending colon (112.9% and 100%, respectively).
- A decrease in dynamics was observed in the transverse colon (69%).
Conclusions:
- A novel, non-invasive method for assessing large bowel motility using functional cine MRI has been developed.
- The technique, utilizing a prokinetic stimulus, successfully visualized and quantified bowel motility.
- Further research is needed to establish the clinical relevance of this functional MRI technique.