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Evaluation of the anatomical and functional properties of deglutition with various kinetic high‐speed MRI sequences
Author(s) -
Anagnostara A.,
Stoeckli S.,
Weber O.M.,
Kollias S.S.
Publication year - 2001
Publication title -
journal of magnetic resonance imaging
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.563
H-Index - 160
eISSN - 1522-2586
pISSN - 1053-1807
DOI - 10.1002/jmri.1172
Subject(s) - swallowing , real time mri , dynamic contrast enhanced mri , supine position , temporal resolution , sagittal plane , computer science , medicine , nuclear medicine , anatomy , magnetic resonance imaging , radiology , physics , surgery , quantum mechanics
We evaluated various fast MR sequences for obtaining anatomical and dynamic functional information during deglutition. Seven healthy volunteers underwent MRI of the oropharynx during swallowing of an oral positive‐contrast agent. Single‐slice imaging was performed in the median sagittal plane while subjects were in a supine position. Twenty serial images were obtained using EPI, FLASH, and turbo‐FLASH sequences. The dynamic (movement‐related) information and the anatomical resolution of the soft tissues were evaluated during deglutition. The FLASH sequence provided high‐quality images at rest. During swallowing, however, the images were significantly degraded by movement artifacts and had inferior temporal resolution. The EPI evidenced better temporal resolution, but was degraded by strong distortions and movement artifacts. The turbo‐FLASH sequence provided the best temporal resolution and sufficient spatial resolution during motion. This sequence proved optimal for the investigation of swallowing function, and is expected to be of value for the documentation of functional disturbances in patients with oropharyngeal pathology. J. Magn. Reson. Imaging 2001;14:194–199. © 2001 Wiley‐Liss, Inc.