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Evaluation of dysphagia by novel real-time MRI.

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Frahm,  J.
Biomedical NMR Research GmbH, MPI for biophysical chemistry, Max Planck Society;

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Citation

Olthoff, A., Carstens, P. O., Zhang, S., von Fintel, E., Friede, T., Lotz, J., et al. (2016). Evaluation of dysphagia by novel real-time MRI. Neurology, 87(20), 2132-2138. doi:10.1212/WNL.0000000000003337.


Cite as: http://hdl.handle.net/11858/00-001M-0000-002B-AC98-3
Abstract
OBJECTIVE: To assess safety and feasibility of real-time (RT) MRI for evaluation of dysphagia and to compare this technique to standard assessment by flexible endoscopic evaluation of swallowing (FEES) and videofluoroscopy (VF) in a cohort of patients with inclusion body myositis (IBM). METHODS: Using RT-MRI, FEES, and VF, an unselected cohort of 20 patients with IBM was studied as index disease with a uniform dysphagia. Symptoms of IBM and dysphagia were explored by standardized tools including Swallowing-Related Quality of Life Questionnaire (SWAL-QoL), IBM Functional Rating Scale, Patient-Reported Functional Assessment, and Medical Research Council Scale. RESULTS: Dysphagia was noted in 80% of the patients and SWAL-QoL was impaired in patients with IBM compared to published reference values of healthy elderly. Swallowing in a supine position during RT-MRI was well-tolerated by all patients. RT-MRI equally revealed dysphagia compared to VF and FEES and correlated well with the SWAL-QoL. Only RT-MRI allowed precise time measurements and identification of the respective tissue morphology. The pharyngeal transit times were 2-fold longer compared to published reference values and significantly correlated with morphologic abnormalities. CONCLUSIONS: RT-MRI is safe and equally capable as VF to identify the cause of dysphagia in IBM. Advantages of RT-MRI include visualization of soft tissue, more reliable timing analysis, and lack of X-ray exposure. RT-MRI may become a routine diagnostic tool for detailed assessment of the esophagus and other moving parts of the body, facilitating longitudinal evaluations in daily practice and clinical trials.