Comparative Study of Pre and Postoperative Voice and Image Analysis in Unilateral Vocal Cord Paralysis and Vocal Polyp

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J Korean Soc Laryngol Phoniatr Logop > Volume 11(1); 2000 > Article

Journal of The Korean Society of Laryngology, Phoniatrics and Logopedics 2000;11(1): 20-27.

편측 성대마비와 성대폴립 환자의 수술 전후 음성검사와 이미지 화상분석의 상관관계에 대한 객관적 비교연구

김시찬, 정유삼, 홍정표, 오정석, 최홍식

연세대학교 의과대학 이비인후과학교실, 음성언어의학연구소

Comparative Study of Pre and Postoperative Voice and Image Analysis in Unilateral Vocal Cord Paralysis and Vocal Polyp

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ABSTRACT

To determine what is the change of pre and postoperative voice and image analysis parameters and correlations between them, videostroboscopy was analyzed in each 18 patients with unilateral vocal cord paralyses or vocal polyps before and after the surgery from November, 1996 to April, 1999. The correlation between acoustic and aerodynamic parameters was investigated. The software-Videolink and $pi$-View(Mediface Co, Seoul, Korea)-was used in a quantitative analysis. In unilateral vocal cord paralysis, the glottic angle is well correlated with maximum phonation time, jitter and shimmer preoperatively. The postoperative glottic angle is also correlated with preoperative maximum phonation time. In patients with the vocal polyp, the chink is postoperatively decreased, but the size of the chink and the polyp is not correlated with pre and postoperative voice analysis parameters. These findings reveal that glottic an and vocal fold angle are good indicators of e postoperative glottic configuration in unilateral vocal cord paralysis. Vocal fold ratio is also a useful indicator that represents the length of vocal folds. We consider that the computerized analysis through videostroboscopy is one of objective diagnostic methods in many voice disorders if we can measure a distance between the telelaryngoscope and vocal folds.

KEY WORDS： Unilateral vocal cord paralysis;Videostroboscopy;Vocal polyp;

중심 단어： 편측 성대마비;후두스츠로보스코피;성대폴립;