Omori K, Kacker A, Slavit D H, Blaugrund S M
Ames Vocal Dynamics Laboratory, Lenox Hill Hospital, New York, New York, USA.
Ann Otol Rhinol Laryngol. 1996 Apr;105(4):280-5. doi: 10.1177/000348949610500407.
The goal of surgical medialization of the vocal fold is to attain complete glottic closure. The purpose of this study is to quantify the glottal gap and to examine the relationship between glottal gap and vocal function perioperatively in thyroplasty type I. Glottal gap area was measured in 20 patients at the point of maximum closure of vocal fold vibration in digitized laryngeal stroboscopic images and was normalized by the square of vocal fold length. Glottal gap area thus measured was correlated with results obtained from well-accepted acoustic, aerodynamic, and perceptual measures of vocal function. The glottal gap was significantly reduced after thyroplasty type I. In patients with small preoperative glottal gaps, the amplitude of vocal fold vibration was significantly improved. This study verifies that quantitative videostroboscopic measurement of the glottal gap is a useful means of objective evaluation of glottic incompetence and of the results of thyroplasty type I.
声带手术内移的目标是实现声门完全闭合。本研究的目的是量化声门间隙，并研究I型甲状成形术围手术期声门间隙与发声功能之间的关系。在数字化喉动态镜图像中，于声带振动最大闭合点测量20例患者的声门间隙面积，并用声带长度的平方进行标准化。如此测量得到的声门间隙面积与从广泛接受的发声功能声学、空气动力学和感知测量结果相关。I型甲状成形术后声门间隙显著减小。术前声门间隙较小的患者，声带振动幅度有显著改善。本研究证实，声门间隙的定量视频动态镜测量是客观评估声门闭合不全及I型甲状成形术效果的有用方法。
