LIST OF FIGURES Figure pge 2-1 Example of fluoroscopic image from where the measurements were completed.... 17 2-2 Figure depicting the reference line drawn from C3 to the hyoid prominence in frame one and a second line from a later frame ................... ................... .......... 21 3-1 Figure depicting the change in average and max angle as a function of bolus consistency. .......................................... ............................ 29 3-2 Figure depicting the change in average and max displacement as a function of b olu s con sisten cy ............................................................................ ............... 2 9 3-3 Figure depicting the change in average and max velocity as a function of bolus consistency. .......................................... ............................ 30 3-4 Figure depicting the angle of the hyoid in degrees and the relationship to the defined swallow events in the "safe swallow" ......... .......................... ........ ....... 31 3-5 Figure depicting the angle of the hyoid in degrees and the relationship to the defined swallow events in the "unsafe swallow" .............................................. 32 3-6 Figure depicting the displacement of the hyoid in millimeters and the relationship to the defined swallow events in the "safe swallow" ..........................32 3-7 Figure depicting the displacement of the hyoid in millimeters and the relationship to the defined swallow events in the "unsafe swallow" ......................33 3-8 Figure depicting the hyoid trajectory in the "safe swallow".......... ..................33 3-9 Figure depicting the hyoid trajectory in the "unsafe swallow".............................34 3-10 Figure depicting the angle of the hyoid movement and the relationship to the defined swallow events in the shorter swallow ............................... .... ........... 35 3-11 Figure depicting the angle of the hyoid movement and the relationship to the defined swallow events in the longer swallow .............................. ............... 36 3-12 Figure depicting the displacement of the hyoid in millimeters and the relationship to the defined swallow events in the shorter swallow..........................36