Key Points
The evaluation of upper gastrointestinal motility requires either invasive techniques or ionizing radiation. Videofluoroscopy offers the opportunity to examine the oropharynx and cervical esophagus in patients who are at risk for aspiration due to swallowing difficulty. Because of the drawback of ionizing radiation exposure, repeated evaluation, especially in children, can be problematic.
Endoscopy is limited to the evaluation of the superficial mucosa, while radiographic examinations offer indirect information on motility based on the dynamics of swallowed contrast medium.
Dynamic magnetic resonance imaging of the esophagus and stomach has represented one of the major challenges in MRI. With the introduction of ultra-fast MR sequences, which have pushed scan times to the subsecond domain, MR fluoroscopic evaluation of physiological activity of soft tissue has become a reality. This allows a new non-invasive approach for the visualization of most motility processes in the human body, including swallowing function and esophageal peristalsis.
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Panebianco, V., Pelle, G., Laghi, A. (2010). MRI of Upper GI Tract Motility. In: Stoker, J. (eds) MRI of the Gastrointestinal Tract. Medical Radiology. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-540-85532-3_6
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