Stasche N, Foth H J, Hörmann K
HNO-Klinik, Universität Kaiserslautern.
HNO. 1993 Jan;41(1):1-6.
In the diagnosis of hearing disorders, the laser velocimeter can be used to advantage. In contrast to previously published studies on measurements at exposed middle and inner ear structures of the human temporal bone, we used a clinically more practical method to obtain results through the intact auditory meatus. We used a laser intensity of less than 1 mW. The measurements were performed in a room with unlimited sound transmission of frequencies between 0.5 and 8 kHz. The signals from the vibration of the tympanic membrane, obtained by this touch-free method, were analyzed by Fourier transform, showing only the fundamental oscillation but not the higher harmonics. Experimental data on middle ear effusions, obtained by fixation of the malleus head and by drilling the temporal bone, are presented.
在听力障碍的诊断中，激光测速仪可发挥优势。与先前发表的关于在人颞骨暴露的中耳和内耳结构上进行测量的研究不同，我们采用了一种临床上更实用的方法，通过完整的外耳道来获取结果。我们使用的激光强度小于1毫瓦。测量在一个频率在0.5至8千赫之间声音可无限制传播的房间内进行。通过这种非接触式方法获得的鼓膜振动信号，经傅里叶变换分析，结果仅显示了基波振荡，未显示更高次谐波。本文还展示了通过固定锤骨头和钻开颞骨获得的中耳积液的实验数据。
