Fig. 2.

Visual Description of the Bolus Events on fluoroscopy stills. The Leading Bolus Point, Trailing Bolus Point and Clearance Point were each found using videofluoroscopy, and the coordinates were then used to find the corresponding pressure values. Leading Pressure was not found using videofluoroscopic techniques like the other points outlined on the stills, it is represented here as a way to better visualize the event that was measured manometrically.