Tongue Shape Dynamics in Swallowing Using Sagittal Ultrasound

AbstractUltrasound imaging is simple, repeatable, gives real-time feedback, and its dynamic soft tissue imaging may make it superior to other modalities for swallowing research. We tested this hypothesis and measured certain spatial and dynamic aspects of the swallowing to investigate its efficacy. Eleven healthy adults wearing a headset to stabilize the probe participated in the study. Both thickened and thin liquids were used, and liquid bolus volumes of 10 and 25  ml were administered to the subjects by using a cup. The tongue’s surface was traced as a spline superimposed on a fan-shaped measurement space for every image from the time at which the tongue blade started moving up toward the palate at the start of swallowing to the time when the entire tongu e was in contact with the palate. To measure depression depth, the distance (in mm) was measured along each radial fan line from the location at which the tongue’s surface spline intersected the fan line to the point where the hard palate intersected the fan line at each timepoint. There were diff erences between individual participants in the imageability of the swallow, and so we defined quantitatively “measureable” and “unmeasurable” types. The most common type was measureable, in which we could find a clear bolus depression in the cupped tongue’s surface. Indeed, with 10 ml of thin liquids, we were able to find and measure the depression depth for all participants. T...
Source: Dysphagia - Category: Speech-Language Pathology Source Type: research

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Source: International Journal of Radiation Oncology * Biology * Physics - Category: Radiology Authors: Tags: Gray Zone Source Type: research
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Source: Actas Urologicas Espanolas - Category: Urology & Nephrology Source Type: research
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Source: Alcoholism, Clinical and Experimental Research - Category: Addiction Authors: Tags: Alcohol Clin Exp Res Source Type: research
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Source: BRAIN STIMULATION: Basic, Translational, and Clinical Research in Neuromodulation - Category: Neurology Authors: Source Type: research
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Source: IEEE Transactions on Biomedical Engineering - Category: Biomedical Engineering Source Type: research
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Source: European Review for Medical and Pharmacological Sciences - Category: Drugs & Pharmacology Tags: Eur Rev Med Pharmacol Sci Source Type: research
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