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Int Arch Otorhinolaryngol 2014; 18(03): 294-302
DOI: 10.1055/s-0034-1372512
Review Article
Thieme Publicações Ltda Rio de Janeiro, Brazil

Improvement of Vocal Pathologies Diagnosis Using High-Speed Videolaryngoscopy

Domingos Hiroshi Tsuji
1   Department of Otolaryngology, School of Medicine, Universidade de São Paulo São Paulo, SP, Brazil
,
Adriana Hachiya
1   Department of Otolaryngology, School of Medicine, Universidade de São Paulo São Paulo, SP, Brazil
,
Maria Eugenia Dajer
1   Department of Otolaryngology, School of Medicine, Universidade de São Paulo São Paulo, SP, Brazil
,
Camila Cristina Ishikawa
1   Department of Otolaryngology, School of Medicine, Universidade de São Paulo São Paulo, SP, Brazil
,
Marystella Tomoe Takahashi
1   Department of Otolaryngology, School of Medicine, Universidade de São Paulo São Paulo, SP, Brazil
,
Arlindo Neto Montagnoli
2   Department of Electric Engineering, Universidade Federal de São Carlos, São Paulo, SP, Brazil
› Author Affiliations
Further Information

Publication History

18 June 2013

28 January 2014

Publication Date:
02 April 2014 (online)

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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.

Keywords

stroboscopy - voice disorders - vocal cords - vibration - dysphonia - laryngoscopy
 

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