scholarly journals Real-time magnetic resonance imaging of normal swallowing

2012 ◽  
Vol 35 (6) ◽  
pp. 1372-1379 ◽  
Author(s):  
Shuo Zhang ◽  
Arno Olthoff ◽  
Jens Frahm
Keyword(s):  
Magnetic Resonance Imaging ◽  
Magnetic Resonance ◽  
Real Time ◽  
Resonance Imaging ◽  
Normal Swallowing

scholarly journals On the Physiology of Normal Swallowing as Revealed by Magnetic Resonance Imaging in Real Time

2014 ◽  
Vol 2014 ◽  
pp. 1-10 ◽  
Author(s):  
Arno Olthoff ◽  
Shuo Zhang ◽  
Renate Schweizer ◽  
Jens Frahm
Keyword(s):  
Magnetic Resonance Imaging ◽  
Magnetic Resonance ◽  
Real Time ◽  
Oral Contrast ◽  
Resonance Imaging ◽  
Start Time ◽  
Pineapple Juice ◽  
Normal Swallowing ◽  
Pharyngeal Transit ◽  
Pharyngeal Constriction

The aim of this study was to assess the physiology of normal swallowing using recent advances in real-time magnetic resonance imaging (MRI). Therefore ten young healthy subjects underwent real-time MRI and flexible endoscopic evaluations of swallowing (FEES) with thickened pineapple juice as oral contrast bolus. MRI movies were recorded in sagittal, coronal, and axial orientations during successive swallows at about 25 frames per second. Intermeasurement variation was analyzed and comparisons between real-time MRI and FEES were performed. Twelve distinct swallowing events could be quantified by real-time MRI (start time, end time, and duration). These included five valve functions: oro-velar opening, velo-pharyngeal closure, glottal closure, epiglottic retroflexion, and esophageal opening; three bolus transports: oro-velar transit, pharyngeal delay, pharyngeal transit; and four additional events: laryngeal ascent, laryngeal descent, vallecular, and piriform sinus filling and pharyngeal constriction. Repetitive measurements confirmed the general reliability of the MRI method with only two significant differences for the start times of the velo-pharyngeal closure (t(8)=-2.4,P≤0.046) and laryngeal ascent (t(8)=-2.6,P≤0.031). The duration of the velo-pharyngeal closure was significantly longer in real-time MRI compared to FEES (t(8)=-3.3,P≤0.011). Real-time MRI emerges as a simple, robust, and reliable tool for obtaining comprehensive functional and anatomical information about the swallowing process.

Articulatory Synthesis Based on Real-Time Magnetic Resonance Imaging Data

2016 ◽  
Author(s):  
Asterios Toutios ◽  
Tanner Sorensen ◽  
Krishna Somandepalli ◽  
Rachel Alexander ◽  
Shrikanth S. Narayanan
Keyword(s):  
Magnetic Resonance Imaging ◽  
Magnetic Resonance ◽  
Real Time ◽  
Imaging Data ◽  
Resonance Imaging ◽  
Magnetic Resonance Imaging Data ◽  
Articulatory Synthesis

Real-time visualization and characterization of liposomal delivery into the monkey brain by magnetic resonance imaging

2005 ◽  
Vol 16 (1-3) ◽  
pp. 20-26 ◽  
Author(s):  
Michal T. Krauze ◽  
Tracy R. Mcknight ◽  
Yoji Yamashita ◽  
John Bringas ◽  
Charles O. Noble ◽  
...  
Keyword(s):  
Magnetic Resonance Imaging ◽  
Magnetic Resonance ◽  
Real Time ◽  
Resonance Imaging ◽  
Monkey Brain ◽  
Real Time Visualization ◽  
Liposomal Delivery

scholarly journals Dynamic near-real-time magnetic resonance imaging for analyzing the velopharyngeal closure in comparison with videofluoroscopy

2004 ◽  
Vol 20 (5) ◽  
pp. 791-797 ◽  
Author(s):  
Ambros J. Beer ◽  
Paul Hellerhoff ◽  
Angela Zimmermann ◽  
Katalin Mady ◽  
Robert Sader ◽  
...  
Keyword(s):  
Magnetic Resonance Imaging ◽  
Magnetic Resonance ◽  
Real Time ◽  
Resonance Imaging ◽  
Velopharyngeal Closure

scholarly journals Feasibility and reproducibility of biventricular volumetric assessment of cardiac function during exercise using real-time radialk-tSENSE magnetic resonance imaging

2009 ◽  
Vol 29 (5) ◽  
pp. 1062-1070 ◽  
Author(s):  
Philipp Lurz ◽  
Vivek Muthurangu ◽  
Silvia Schievano ◽  
Johannes Nordmeyer ◽  
Philipp Bonhoeffer ◽  
...  
Keyword(s):  
Magnetic Resonance Imaging ◽  
Magnetic Resonance ◽  
Cardiac Function ◽  
Real Time ◽  
Resonance Imaging ◽  
Volumetric Assessment

Real-time magnetic resonance imaging of laser heat deposition in tissue

1991 ◽  
Vol 21 (1) ◽  
pp. 132-137 ◽  
Author(s):  
Alan R. Bleier ◽  
Ferenc A. Jolesz ◽  
Mark S. Cohen ◽  
Robert M. Weisskoff ◽  
Julianne J. Dalcanton ◽  
...  
Keyword(s):  
Magnetic Resonance Imaging ◽  
Magnetic Resonance ◽  
Real Time ◽  
Resonance Imaging ◽  
Laser Heat ◽  
Heat Deposition
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