Characterization of Vocal Fold Vibration in Sulcus Vocalis Using High-Speed Digital Imaging.

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Characterization of Vocal Fold Vibration in Sulcus Vocalis Using High-Speed Digital Imaging.

J Speech Lang Hear Res. 2017 Jan 01;60(1):24-37

Authors: Yamauchi A, Yokonishi H, Imagawa H, Sakakibara KI, Nito T, Tayama N, Yamasoba T

Abstract
Purpose: The aim of the present study was to qualitatively and quantitatively characterize vocal fold vibrations in sulcus vocalis by high-speed digital imaging (HSDI) and to clarify the correlations between HSDI-derived parameters and traditional vocal parameters.
Method: HSDI was performed in 20 vocally healthy subjects (8 men and 12 women) and 41 patients with sulcus vocalis (33 men and 8 women). Then HSDI data were evaluated by assessing the visual-perceptual rating, digital kymography, and glottal area waveform.
Results: Patients with sulcus vocalis frequently had spindle-shaped glottal gaps and a decreased mucosal wave. Compared with the control group, the sulcus vocalis group showed higher open quotient as well as a shorter duration of the visible mucosal wave, a smaller speed index, and a smaller glottal area difference index ([maximal glottal area - minimal glottal area]/maximal glottal area). These parameters deteriorated in order of the control group and Type I, II, and III sulcus vocalis. There were no gender-related differences. Strong correlations were noted between the open quotient and the type of sulcus vocalis.
Conclusions: HSDI was an effective method for documenting the characteristics of vocal fold vibrations in patients with sulcus vocalis and estimating the severity of dysphonia.

PMID: 28114611 [PubMed - indexed for MEDLINE]

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