Quantitative analysis of videokymography in normal and pathological vocal folds: a preliminary study
Quantitative analysis of videokymography in normal and pathological vocal folds: a preliminary study
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DOI：
10.1007/s00405-011-1780-y
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发表时间：
2012-01-01
影响因子：
2.6
通讯作者：
Peretti, Giorgio
中科院分区：
文献类型：
--
作者：
Piazza, Cesare;Mangili, Stefano;Peretti, Giorgio
视频描记术（VKG）捕获独立于声学信号的周期性的声带的高速图像。本研究的目的是初步评估一种可以客观测量声带振动特定参数的软件包。从2009年8月至2010年12月，我们前瞻性地评估了40例受试者（A组，18例正常受试者; B组，14例声带中三分之一良性病变患者，如息肉和囊肿; C组，8例接受声带良性病变内镜切除术的患者），通过视频内窥镜、视频喉镜频闪镜和VKG。VKG相机耦合到70 A度望远镜，并在发声期间记录视频。通过我们小组开发的具有用户友好界面的后处理软件工具（VKG-Analyser）对图像进行客观分析。考虑了不同的参数，包括一个声带振动的幅度之间的比率相对于对侧（R（amp）），一个声带振动的周期之间的比率和相反的一个（R（per）），和声门周期内的开放和关闭阶段的持续时间之间的比率（R（oc））。A组的R（amp）、R（per）和R（oc）的平均值分别为1.05、1.04和1.35; B组分别为1.63、0.92和0.97; C组分别为1.13、0.91和1.85。本文提出的工具，名为VKG分析仪的视频波形的定量分析，是有用的正常和病理声带的振动模式的客观评价。可以预期，这一工具在声带振动的生理和病理模式研究方面的重要未来发展。
Videokymography (VKG) captures high-speed images of the vocal folds independently of the periodicity of the acoustic signal. The aim of this study was to preliminarily assess a software package that can objectively measure specific parameters of vocal fold vibration. From August 2009 until December 2010, we prospectively evaluated 40 subjects (Group A, 18 normal subjects; Group B, 14 patients with benign lesions of the middle third of the vocal fold, such as polyps and cysts; Group C, 8 patients treated by endoscopic excision of vocal fold benign lesions) by videoendoscopy, videolaryngostroboscopy, and VKG. A VKG camera was coupled to a 70A degrees telescope and video was recorded during phonation. Images were objectively analyzed by a post-processing software tool (VKG-Analyser) with a user-friendly interface developed by our group. Different parameters were considered, including the ratio between the amplitude of the vibration of one vocal fold with respect to the contralateral (R (amp)), the ratio between the period of one vocal fold vibration and the opposite one (R (per)), and the ratio between the duration of the open and closed phase within a glottal cycle (R (oc)). Mean values for R (amp), R (per), and R (oc) in Group A were 1.05, 1.04, and 1.35, respectively; in Group B were 1.63, 0.92, and 0.97, respectively; and in Group C were 1.13, 0.91, and 1.85, respectively. Quantitative analysis of videokymograms by the herein presented tool, named VKG-Analyser, is useful for objective evaluation of the vibratory pattern in normal and pathologic vocal folds. Important future developments of this tool for the study of both physiologic and pathologic patterns of vocal fold vibration can be expected.