Comparison of Videostroboscopy to Stroboscopy Derived From High-Speed Videoendoscopy for Evaluating Patients With Vocal Fold Mass Lesions Purpose Videostroboscopy (VS) uses an indirect physiological signal to predict the phase of the vocal fold vibratory cycle for sampling. Simulated stroboscopy (SS) extracts the phase of the glottal cycle directly from the changing glottal area in the high-speed videoendoscopy (HSV) image sequence. The purpose of this study is to ... Research Article
Research Article  |   November 01, 2016
Comparison of Videostroboscopy to Stroboscopy Derived From High-Speed Videoendoscopy for Evaluating Patients With Vocal Fold Mass Lesions
 
Author Affiliations & Notes
  • Maria E. Powell
    Department of Communication Sciences and Disorders, University of Cincinnati, OH
    Laryngeal Biology Laboratory, Vanderbilt University, Nashville, TN
  • Dimitar D. Deliyski
    Department of Communicative Sciences and Disorders, Michigan State University, East Lansing
  • Robert E. Hillman
    Center for Laryngeal Surgery and Voice Rehabilitation, Massachusetts General Hospital, Boston
    Department of Surgery, Harvard Medical School, Boston, MA
    Department of Communication Sciences and Disorders, MGH Institute of Health Professions, Boston, MA
  • Steven M. Zeitels
    Center for Laryngeal Surgery and Voice Rehabilitation, Massachusetts General Hospital, Boston
    Department of Surgery, Harvard Medical School, Boston, MA
  • James A. Burns
    Center for Laryngeal Surgery and Voice Rehabilitation, Massachusetts General Hospital, Boston
    Department of Surgery, Harvard Medical School, Boston, MA
  • Daryush D. Mehta
    Center for Laryngeal Surgery and Voice Rehabilitation, Massachusetts General Hospital, Boston
    Department of Surgery, Harvard Medical School, Boston, MA
    Department of Communication Sciences and Disorders, MGH Institute of Health Professions, Boston, MA
  • Disclosure: The authors have declared that no competing interests existed at the time of publication.
    Disclosure: The authors have declared that no competing interests existed at the time of publication. ×
  • Correspondence to Maria E. Powell: maria.e.powell@vanderbilt.edu
  • Editor: Krista Wilkinson
    Editor: Krista Wilkinson×
  • Associate Editor: Preeti Sivasankar
    Associate Editor: Preeti Sivasankar×
Article Information
Speech, Voice & Prosodic Disorders / Voice Disorders / Speech, Voice & Prosody / Research Articles
Research Article   |   November 01, 2016
Comparison of Videostroboscopy to Stroboscopy Derived From High-Speed Videoendoscopy for Evaluating Patients With Vocal Fold Mass Lesions
American Journal of Speech-Language Pathology, November 2016, Vol. 25, 576-589. doi:10.1044/2016_AJSLP-15-0050
History: Received May 5, 2015 , Revised December 31, 2015 , Accepted March 31, 2016
 
American Journal of Speech-Language Pathology, November 2016, Vol. 25, 576-589. doi:10.1044/2016_AJSLP-15-0050
History: Received May 5, 2015; Revised December 31, 2015; Accepted March 31, 2016

Purpose Videostroboscopy (VS) uses an indirect physiological signal to predict the phase of the vocal fold vibratory cycle for sampling. Simulated stroboscopy (SS) extracts the phase of the glottal cycle directly from the changing glottal area in the high-speed videoendoscopy (HSV) image sequence. The purpose of this study is to determine the reliability of SS relative to VS for clinical assessment of vocal fold vibratory function in patients with mass lesions.

Methods VS and SS recordings were obtained from 28 patients with vocal fold mass lesions before and after phonomicrosurgery and 17 controls who were vocally healthy. Two clinicians rated clinically relevant vocal fold vibratory features using both imaging techniques, indicated their internal level of confidence in the accuracy of their ratings, and provided reasons for low or no confidence.

Results SS had fewer asynchronous image sequences than VS. Vibratory outcomes were able to be computed for more patients using SS. In addition, raters demonstrated better interrater reliability and reported equal or higher levels of confidence using SS than VS.

Conclusion Stroboscopic techniques on the basis of extracting the phase directly from the HSV image sequence are more reliable than acoustic-based VS. Findings suggest that SS derived from high-speed videoendoscopy is a promising improvement over current VS systems.

Acknowledgments
This study was fully supported by the National Institute on Deafness and Other Communication Disorders Grant R01-DC007640, “Efficacy of Laryngeal High-Speed Videoendoscopy”, awarded to Dimitar Deliyski. Research was conducted in the Department of Communication Sciences and Disorders at the University of Cincinnati. Portions of this study have been presented at the Voice Foundation's 44th Annual Symposium: Care of the Professional Voice, Philadelphia, PA, May 2015. The authors thank the following researchers for their contributions to the execution of the study: Terri Gerlach, Stephanie Zacharias, Keiko Ishikawa, and Resmi Gupta.
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