The Next Step in Voice Assessment: High-Speed Digital Endoscopy and Objective Evaluation
The Next Step in Voice Assessment: High-Speed Digital Endoscopy and Objective Evaluation
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DOI：
10.2174/157489309788184774
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发表时间：
2009-05-01
影响因子：
4
通讯作者：
Doellinger, Michael
中科院分区：
文献类型：
--
作者：
Doellinger, Michael
数字高速内窥镜获得的数据及其客观分析提供了许多新的可能性，以加强对喉动力学及其病理的理解和研究。高速成像克服了目前使用的视频频闪技术的缺点。此外，客观评价的动态最终使证据为基础的诊断开始在内镜语音diagnosis.Purpose的审查：本次审查的目的是描述的应用和实用性的内镜高速数字成像结合客观分析的临床诊断和了解动态在喉。最近的发现：高速数字内窥镜（2000-4000 fps）允许在发声（即产生单个元音）期间以真实的时间记录振荡声带（100 Hz-300 Hz）。因此，可视化和量化病理特别有用，这些病理只影响声带的动态行为（即嘶哑），而不影响解剖结构。客观喉动力学分析的基础是最近开发的固体图像处理技术，能够分割高速电影中的声带边缘。对于喉动力学的客观评价，已经提出了几种方法。最常见的方法是直接通过线性或非线性分析来评估单个轨迹的动力学或整个2D动力学（声振描记法）。此外，声带的生物力学模型被调整或优化，以提取声带运动，用于语音病理的分类。声学记录结合相应的高速序列被应用于获得信息发生dependency.Using激光投影系统提供了量化的声带长度和声带振动在发声过程中的公制单位。由于高速录音，声带振动和相关的跨声门气流之间的关系可能是相关联的。高速成像也进行了调查的动态喉切除者的新声门。它大大增强了对新声门振动的理解，并提供了比常用的视频透视更多的信息。
The data gained by digital high-speed endoscopy and its objective analysis provide many new possibilities to enhance the understanding and investigation of laryngeal dynamics and its pathologies. High-speed imaging overcomes disadvantages of the currently used technique of videostroboscopy. Additionally, objective evaluation of the dynamics finally enables the beginning of evidenced based diagnostics in endoscopic voice diagnostics.Purpose of Review: The purpose of this review is to describe the application and usefulness of endoscopic high-speed digital imaging in combination with objective analysis for clinical diagnostics and for understanding dynamics in the larynx.Recent Findings: High-speed digital endoscopy (2000-4000 fps) allows recording the oscillating vocal folds (100Hz - 300Hz) in real time during phonation (i.e. producing a single vowel). Therefore, it is especially useful to visualize and to quantify pathologies, which affect only the dynamic behavior of the vocal folds (i.e. hoarseness) but not the anatomical structure.The basis for objective laryngeal dynamics analysis are the recently developed solid image processing techniques enabling the segmentation of the vocal fold edges within the high-speed movies. For objective evaluation of laryngeal dynamics, several approaches have been suggested. The most common approaches are to evaluate the dynamics of single trajectories or the entire 2D-dynamics (Phonovibrography) directly by linear or non-linear analysis. Also, biomechanical models of the vocal folds are adapted or optimized towards extracted vocal fold movements for classification of voice pathologies. Acoustic recordings in combination with the corresponding high-speed sequences were applied to gain information about occurring dependencies.Using laser projection systems provided the quantification of vocal fold length and vocal fold vibrations in metric units during phonation. Due to high-speed recordings, relations between vocal fold vibrations and associated transglottal airflow could be associated. High-speed imaging was also performed for the investigation of the dynamics of the neoglottis in laryngectomees. It substantially enhanced the understanding of the vibrations of the neoglottis and provided more information than the commonly used videofluoroscopy.