“…16 The observation items in the VFSS were set as follows: posterior propulsion of the tongue, piecemeal deglutition (fragmentation of the bolus over the dorsum of the tongue with the need of Ն3 swallows to clear the oral cavity), postswallow residue in vallecula and pyriform sinuses or both, penetration above the vocal folds, aspiration, UES opening, and postswallow residue above UES. The water was mixed with a water soluble contrast medium (Xenetix 300 mg, Guerbet, Belgium) and the pureed potato was mixed with barium powder (EZHD Barium Sulfate 98%, Guerbet, Belgium).…”