“Clinicians evaluating and treating swallowing disorders use a videofluoroscopic radiology procedure to assess swallowing physiology in patients with symptoms of swallowing disorders (i.e. dysphagia) and estimate the degree of swallowing impairment from observations made during the exam. This procedure, the modified barium swallow (MBS) examination, captures sequential videoradiographic images of barium contrast- impregnated food and liquid as they are transported during the oral cavity, pharyngeal cavity, and esophagus in real time. Various volumes and textures of food and liquid are administered and clinical impressions of the presence and degree of swallowing impairment are obtained from the radiographic images. Judgments are also made regarding the coordination and timing of swallowing events.” (Martin-Harris and Jones, 2009, pg. 2)

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