Identification of Swallowing
Patterns Associated with Dysphagia
Mark Mizuko, Rachel Komarek, John Hatten,
(University of Minnesota Duluth)
Joe Piette & Peggy Stone
(St.Mary's/Duluth Clinic Health Systems)
Technology Enhanced Learning Project
about using QuickTime technology presented at TechFest
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you may need to download Quicktime at
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In order for students in the field of
Speech Pathology to understand, diagnose and provide
treatment for persons with dysphagia, there must first be a
thorough understanding of a "normal" swallow.
The act of deglutition is divided into
- Oral Preparatory Phase - food is
manipulated in the mouth and masticated (chewed) if
necessary in order to reduce food to a consistency which
can be swallowed.
- Oral Phase - the tongue propels food
posteriorly until the pharyngeal swallow is
- Pharyngeal Phase - once the
pharyngeal swallow is triggered, the bolus (cohesive ball
of food) is transported through the pharynx.
- Esophageal Phase - esophageal
peristalsis carries the bolus from the cricopharyngeal
juncture or upper esophageal sphincter (UES) through the
esophagus to the Lower Esophageal Sphincter
This tutorial will allows the student to
view the first three phases of swallowing via
TUTORIAL on Computerized Image
Processing in Swallowing Analysis
Special thanks to St.Mary's/Duluth
Clinic Health Systems(SMDC)
Radiology and Speech Pathology departments for providing the
videofluroscopy studies of the normal adult.
Copyright (C) 1998, Regents of the University of
Minnesota. All rights reserved. For additional information,
please contact Mark I. Mizuko.