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  Real-time magnetic resonance imaging of normal swallowing.

Zhang, S., Olthoff, A., & Frahm, J. (2012). Real-time magnetic resonance imaging of normal swallowing. Journal of Magnetic Resonance Imaging, 35(6), 1372-1379. doi:10.1002/jmri.23591.

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Item Permalink: http://hdl.handle.net/11858/00-001M-0000-000F-9B86-3 Version Permalink: http://hdl.handle.net/11858/00-001M-0000-0028-F090-1
Genre: Journal Article

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 Creators:
Zhang, S.1, Author              
Olthoff, A., Author
Frahm, J.1, Author              
Affiliations:
1Biomedical NMR Research GmbH, MPI for biophysical chemistry, Max Planck Society, ou_578634              

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Free keywords: Real-time MRI; dynamic imaging; swallowing; deglutition; dysphagia
 Abstract: Purpose: To evaluate the use of a novel real-time magnetic resonance imaging (MRI) technique for the assessment of normal swallowing dynamics. Materials and Methods: In a cohort of 10 healthy subjects, real-time MRI movies at 24.3 frames per second were obtained in sagittal, coronal, and axial orientation during self-controlled swallows of 5 mL pineapple juice as oral contrast bolus. All studies were performed with the use of a commercial MRI system at 3 T combining two sets of radiofrequency receiver coils. Real-time movies relied on a fast low-angle shot (FLASH) MRI sequence with radial undersampling and image reconstruction by nonlinear inversion yielding 41.23 msec acquisition time for an in-plane resolution of 1.5 mm. Evaluations focused on clinical image quality as well as visualization and temporal quantification of distinct swallowing functions. Results: Throughout the entire process, the swallowing dynamics were well depicted and characterized with almost no visible image artifacts in all subjects. The midsagittal plane turned out to be most valuable. The movies allowed for a quantitative determination of the temporal pattern of all swallowing events. Conclusion: The proposed real-time MRI technique yields noninvasive, robust, and quantitative access to the physiology of normal swallowing in healthy subjects at high temporal resolution and image quality.

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Language(s): eng - English
 Dates: 2012-01-232012
 Publication Status: Published in print
 Pages: -
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 Rev. Method: Peer
 Identifiers: DOI: 10.1002/jmri.23591
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Title: Journal of Magnetic Resonance Imaging
Source Genre: Journal
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Pages: - Volume / Issue: 35 (6) Sequence Number: - Start / End Page: 1372 - 1379 Identifier: -