Figure 2 - Videofluoroscopy and videoendoscopy.
From the following article
Oral, pharyngeal and upper esophageal sphincter motility disorders
Benson T. Massey and Reza Shaker
GI Motility online (2006)
doi:10.1038/gimo19
The figures are stills from the linked videos. a: Shows premature spill(see Video 1); b: shows cricopharyngeal bar (see Video 2); c: shows aspiration (see Video 3).
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