Hertegård Stellan, Larsson Hans
Department of Otorhinolaryngology, Karolinska Institutet Clintec, Karolinska University Hospital Huddinge, Stockholm, Sweden.
Department of Logopedics, Karolinska Institutet Clintec, Karolinska University Hospital Huddinge, Stockholm, Sweden.
J Voice. 2014 Nov;28(6):681-7. doi: 10.1016/j.jvoice.2014.04.002. Epub 2014 Jul 5.
In this article, we present a new portable low-cost system for high-speed examinations of the vocal folds. Analysis of glottal vibratory parameters from the high-speed recordings is compared with videostroboscopic recordings.
The high-speed system is built around a Fastec 1 monochrome camera, which is used with newly developed software, High-Speed Studio (HSS). The HSS has options for video/image recording, contains a database, and has a set of analysis options. The Fastec/HSS system has been used clinically since 2011 in more than 2000 patient examinations and recordings. The Fastec 1 camera has sufficient time resolution (≥4000 frames/s) and light sensitivity (ISO 3200) to produce images for detailed analyses of parameters pertinent to vocal fold function. The camera can be used with both rigid and flexible endoscopes. The HSS software includes options for analyses of glottal vibrations, such as kymogram, phase asymmetry, glottal area variation, open and closed phase, and angle of vocal fold abduction. It can also be used for separate analysis of the left and vocal fold movements, including maximum speed during opening and closing, a parameter possibly related to vocal fold elasticity. A blinded analysis of 32 patients with various voice disorders examined with both the Fastec/HSS system and videostroboscopy showed that the high-speed recordings were significantly better for the analysis of glottal parameters (eg, mucosal wave and vibration asymmetry).
The monochrome high-speed system can be used in daily clinical work within normal clinical time limits for patient examinations. A detailed analysis can be made of voice disorders and laryngeal pathology at a relatively low cost.
在本文中，我们介绍一种用于声带高速检查的新型便携式低成本系统。将高速记录中的声门振动参数分析结果与频闪喉镜记录进行比较。
高速系统围绕一台Fastec 1单色相机构建，该相机与新开发的软件“高速工作室”（HSS）配合使用。HSS具备视频/图像录制选项，包含一个数据库，并有一组分析选项。自2011年以来，Fastec/HSS系统已在临床中用于2000多次患者检查和记录。Fastec 1相机具有足够的时间分辨率（≥4000帧/秒）和光灵敏度（ISO 3200），能够生成用于详细分析与声带功能相关参数的图像。该相机可与刚性和柔性内窥镜配合使用。HSS软件包括声门振动分析选项，如波形图、相位不对称、声门面积变化、开放和闭合相位以及声带外展角度。它还可用于单独分析左右声带运动，包括开合过程中的最大速度，这是一个可能与声带弹性相关的参数。对32例患有各种嗓音障碍的患者进行了Fastec/HSS系统和频闪喉镜检查的盲法分析，结果表明高速记录在声门参数分析（如黏膜波和振动不对称）方面明显更好。
单色高速系统可在正常临床时间限制内用于日常临床工作中的患者检查。可以以相对较低的成本对嗓音障碍和喉部病变进行详细分析。
