Supplementary Material for: Low-Cost High-Speed Imaging System for Observing Vocal Fold Vibration in Voice Disorders

Purpose: The aim of this study was to establish a method to observe vocal fold vibration using a low-cost high-speed laryngeal imaging system. Procedures: We assembled a high-speed imaging system with a consumer digital camera and a rigid laryngeal endoscope. The camera can shoot digital images at a rate of 1,200 frames per second and be purchased for about USD 1,000 in Japan. Results: We examined the normal and pathological vocal folds of 215 subjects with our new system and analyzed the vocal fold vibration in these subjects by playback of a video and kymograph images. Conclusions: Our high-speed laryngeal imaging system is highly cost-effective and can be a useful tool for examining the vocal folds of patients with voice disorders.

研究目的：本研究旨在建立一种利用低成本高速喉部成像系统（high-speed laryngeal imaging system）观察声带（vocal fold）振动的方法。
研究步骤：我们采用消费级数码相机与硬质喉内镜组装了一套高速成像系统。该相机可实现每秒1200帧的数字图像拍摄，在日本市场售价约1000美元。
研究结果：我们使用这套新型成像系统对215名受试者的正常与病变声带进行了检查，并通过视频回放及记波图像（kymograph images）分析了上述受试者的声带振动情况。
研究结论：本研究搭建的高速喉部成像系统具备极高的成本效益，可作为检查嗓音障碍患者声带状况的实用工具。