Videostrobokymographic Analysis of the Benign Vocal Folds Lesions

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J Korean Soc Laryngol Phoniatr Logop > Volume 13(1); 2002 > Article

Journal of The Korean Society of Laryngology, Phoniatrics and Logopedics 2002;13(1): 5-17.

양성 성대 질환에서의 Videostrobokymography 소견

김동영¹, 성명훈², 김광현², 최승호³, 왕수건⁴

¹동아대학교 의과대학 이비인후과학교실²서울대학교 의과대학 이비인후과학교실³울산대학교 의과대학 이비인후과학교실⁴부산대학교 의과대학 이비인후과학교실

Videostrobokymographic Analysis of the Benign Vocal Folds Lesions

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ABSTRACT

Objectives : Videostrobokymography(VSK) has been recently developed and reported by Sung et at. We aimed to analyze vibratory patterns and objective parameters in various benign vocal fold lesions using VSK, and examine the efficacy of VSK in clinical application.
Materials and Method
s : Using VSK, we analyzed the vibration pattern of normal vocal fold and various benign lesions, such as nodules, polyps, cysts, Reinke's edema and unilateral vocal fold paralysis. We also calculated objective parameters, open quotient and asymmetric index, and compared them with mean values of parameters in normal controls.
Results
: In nodules, polyps, and cysts, the open quotient on the site of the lesion was similar to the mean value in normal controls, however, on the other part of the vocal folds it was much larger than normal mean value. In Reinke's edema, irregular and asymmetric vibration was observed. The posterior portion of the vocal folds showed larger open quotients than the anterior portion. In the unilateral vocal fold paralysis, irregular vocal folds vibration and incomplete closure of the vocal folds were documented. Much larger asymmetric indices were calculated in the unilateral vocal fold paralysis than in normal controls and other lesions. The asymmetric index could be a good quantitative parameter of vibration from a patient with vocal fold paralysis.
Conclusion
: This study demonstrated that VSK could generate clear quantitative documentations of fine vibrations of vocal folds in many different benign lesions. VSK has a potential as an effective tool for quantitative analysis of vibratory patterns of the vocal folds iii clinical settings.

KEY WORDS： Videostrokymography;Benign vocal folds lesions;Vibration of vocal folds;Objective parameters;

중심 단어： 후두양성질환;