| Abstract | Title: High-Speed Videoendoscopy: Quantitative and Qualitative Analysis Workshop
Authors: *Rita Patel, PhD, +Michael Dollinger, PhD
Affiliations: *Department of Speech, Language & Hearing Sciences, Indiana University, USA
+Division of Phoniatrics and Pediatric Audiology at the Department of Otorhinolaryngology Head & Neck Surgery, University of Erlangen-Nuremberg, Germany
Abstract (350 words)
Fundamental to improving voice treatment is the direct observation of the vibratory motion of vocal folds. In the last several years, new concepts in the area of voice, voice diagnostics, image analysis and modeling have been developed to shed light on the mechanisms of irregular vocal fold vibrations. Videostroboscopy is routinely used in clinic for examination of vocal fold dynamics. It captures vocal fold motion at reduced rate making it difficult to assess moderate to severely aperiodic voices and transitory events like oscillatory onset/offset, oscillatory breaks, etc.. In addition to the above, known issues with pitch extraction and stroboscopic light trigger makes it not valid for severely aperiodic voices.
High-speed videoendoscopy (HSV) appears to overcome these limitations with increased capture rates of 4000 fps and more. High-speed videoendoscopy provides an opportunity to quantify cycle-to-cycle vocal fold movements and derive spatiotemporal correlates of disturbed vibratory patterns that characterize and/or predispose the development of voice disorders. HSV also initiates recording immediately, regardless of the loudness of voice, making vibratory onset and offset analysis possible. This workshop will discuss practical applications of:
1) Hand-on experience with use of Voice-Vibratory Analysis Laryngeal Imaging For (VALI)1 for visual-perceptual analyses of HSV (20 minutes)
2) Hand-on experience with quantitative analysis of HSV using the Glottal Analysis Tool (GAT)2 (15 minutes)
3) Pitfalls in recording and analysis including what parameters should I use and trust in? 3-5 (10 minutes)
4) Questions & Answers: (5 minutes)
References
1. 1. Poburka BJ, Patel RR. Laryngeal endoscopic imaging: fundamentals and key concepts for rating selected parameters. Perspectives of the ASHA Special Interest Groups 2021;6:736-42.
2. 2. Lohscheller J, Döllinger M, Schuster M, Schwarz R, Eysholdt U, Hoppe U. Quantitative investigation of the vibration pattern of the substitute voice generator. IEEE Trans Biomed Eng 2004;51:1394-400.
3. P. Schlegel, M. Kunduk, M. Stingl, M. Semmler, M. Döllinger, C. Bohr, A. Schützenberger. Influence of spatial camera resolution in highspeed videoendoscopy on laryngeal parameters. PloS ONE, 14(4):e0215168; 2019. https://doi.org/10.1371/journal.pone.0215168
4. P. Schlegel, M. Stingl, M. Kunduk, S. Kniesburges, C. Bohr, M.
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