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KMID : 0361020000430070758
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Korean Journal of Otolaryngology - Head and Neck Surgery
2000 Volume.43 No. 7 p.758 ~ p.764
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A Study of the Availability and Parameters of Videokymography
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Ahn Cheol-Min
Chung Duk-Hee
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Abstract
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Background and Objectives : Examining vibrations of the vocal fold is very important in patients with
voice changes. The newly developed viedokymography (VKG) takes images in real time and records
irregular vibrations of the vocal fold. However, there are few data on VKG fingidns. We studied VKG to
evaluate the vibratory characteristics of the vocal fold in benign vocal fold lesions and normal subjects.
Materials and Methods : Normal subjects (N=20) and patients (N=100) with laryngeal lesions were
evaluated. Unique vibratory patterns, blurred demarcation of the mucosal propagation, decreased margin
amplitudes, asymmetry in phase or amplitude, and different contact sites were observed in each benign
vocal-fold lesion.
Results : There were several differences between subjects with normal and with
laryngeal lesion. VKG depicted the tiny difference which were not exactly found by the stroboscope.
Conclusions : We found that each type of laryngeal lesion has specific characteristics which can be
revealed by VKG examination. These characteristics could be quantified and used to objectively evaluate
VKG findings. This research shows that VKG can be used as a supplementary diagnostic tool.
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KEYWORD
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Videokymography, Benign vocal fold lesion, Mucosal wave
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