Improvement of Vocal Pathologies Diagnosis Using High-Speed Videolaryngoscopy

Author(s)

Tsuji, Domingos Hiroshi ; Hachiya, Adriana ; Dajer, Maria Eugenia ; Ishikawa, Camila Cristina ; Takahashi, Marystella Tomoe ; Montagnoli, Arlindo Neto

• Document type: Journal article
• Source: INTERNATIONAL ARCHIVES OF OTORHINOLARYNGOLOGY; v. 18, n. 3, p. 9-pg., 2014-07-01.

Abstract

Introduction The study of the dynamic properties of vocal fold vibration is important for understanding the vocal production mechanism and the impact of organic and functional changes. The advent of high-speed videolaryngoscopy (HSV) has provided the possibility of seeing the real cycle of vocal fold vibration in detail through high sampling rate of successive frames and adequate spatial resolution. Objective To describe the technique, advantages, and limitations of using HSV and digital videokymography in the diagnosis of vocal pathologies. Methods We used HSV and digital videokymography to evaluate one normophonic individual and four patients with vocal fold pathologies (nodules, unilateral paralysis of the left vocal fold, intracordal cyst, and adductor spasmodic dysphonia). The vocal fold vibration parameters (glottic closure, vibrational symmetry, periodicity, mucosal wave, amplitude, and glottal cycle phases) were assessed. Results Differences in the vocal vibration parameters were observed and correlated with the pathophysiology. Conclusion HSV is the latest diagnostic tool in visual examination of vocal behavior and has considerable potential to refine our knowledge regarding the vocal fold vibration and voice production, as well as regarding the impact of pathologic conditions have on the mechanism of phonation. (AU)

• FAPESP's process: 10/03345-0 - Evaluation of vocal exercise effects in normal voices with perceptual and acoustic analysis and comparison with high-speed videolaryngoscopy images
• Grantee: Regina Aparecida Pimenta
• Support Opportunities: Scholarships in Brazil - Master