Chang H.-Y.Torng P.-C.TYNG-GUEY WANGYEUN-CHUNG CHANG2021-03-192021-03-1920120003-9993https://scholars.lib.ntu.edu.tw/handle/123456789/553990Objective: To investigate whether acoustic voice analysis can identify the presence of penetration/aspiration (P/A) as confirmed by videofluoroscopic swallowing study (VFSS). Design: Repeated measures within subjects. Setting: Rehabilitation department in a tertiary teaching hospital. Participants: Patients (N=44) with swallowing disorders referred for VFSS. Interventions: Patients were asked to sustain phonations /a/ for at least 3 seconds before and after swallowing 5mL of liquid barium during a standardized VFSS. The acoustic voice analysis program was used to analyze vocal quality change. Main Outcome Measures: Five acoustic parameters including average fundamental frequency, relative average perturbation, shimmer percentage, noise-to-harmonic ratio, and voice turbulence index were analyzed for each participant before and after swallowing during VFSS. Differences in the pre- and postmeasures were compared between those participants who demonstrated VFSS-confirmed P/A (n=17) and those who did not (n=27). Results: No significant changes were noted in the 5 acoustic parameters in or between P/A and nonpenetration/aspiration groups (P>.05). Conclusions: As used in this study, acoustic voice analysis does not identify the presence of P/A confirmed by VFSS. ? 2012 American Congress of Rehabilitation Medicine.[SDGs]SDG3barium; adult; article; clinical article; controlled study; dysphagia; female; fluoroscopy; human; male; penetration aspiration; phonation; swallowing; teaching hospital; videofluoroscopic swallowing study; voice; voice analysis; voice change; Aged; Deglutition; Deglutition Disorders; Female; Fluoroscopy; Hospitals, Teaching; Humans; Male; Middle Aged; Observer Variation; Physical Therapy Modalities; Respiratory Aspiration; Speech Acoustics; Video Recordingjournal article10.1016/j.apmr.2012.05.028227218692-s2.0-84867866280