Vibration measurement of the tympanic membrane using electronic speckle pattern interferometry

使用电子散斑干涉测量法测量鼓膜振动

• 批准号: 07557107
• 负责人: WADA Hiroshi
• 金额: $ 12.48万
• 依托单位: Tohoku University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (A)
• 财政年份: 1995
• 资助国家: 日本
• 起止时间: 1995 至 1996
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-07557107/
• 关键词: Vibration Measurement; Optical Measurement; Medical Equipment; Tympanic Membrane; Laser; Electronic Speckle Pattern Interferometry; Sinusoidal Phase Modulation; Time-averaged Recording; ESPI法; 振動挙動; 可視化; 波長変調法

Although some techniques for the measurement of tympanic membrane vibration have alreaby been existed, their sensitivity to vibration amplitude is poor, and they need high SPL for the measurement. As a result, they are not suitable for the clinical application. Therefore, in this study, using the time-averaged electronic speckle pattern interferometry, the sinusoidal phase modulation technique by a direct modulation of laser injection current and the digital image processing technique an attempt is made to develop a system for the measurement of tympanic membrane small vibration. Then, the vibratory responses of guinea pig tympanic membranes are measured by this system. The results of this study indicate that the vibration amplitude is detectable in nanometer order even when the stimulus level is small, e.g. 70dB SPL.Consequently, the system developed by our group has a potential of the clinical application.

虽然目前已有一些测量鼓膜振动的技术，但其对振动幅度的灵敏度较差，并且需要较高的声压级来进行测量。因此，它们不适合临床应用。因此，本研究利用时均电子散斑干涉技术、直接调制激光注入电流的正弦相位调制技术以及数字图像处理技术，尝试开发一种用于鼓膜小尺寸测量的系统。振动。然后，该系统测量豚鼠鼓膜的振动反应。这项研究的结果表明，即使刺激水平很小，例如，纳米级的振动幅度也可以检测到。 70dB SPL。由此可见，我们课题组开发的系统具有临床应用的潜力。

项目成果

Hiroshi Wada: "Vibration measurement of the tympanic membrane using the time-averaged electronic speckle pattern interferometry." Transactions of JSME. (Submitting).

Hiroshi Wada：“使用时间平均电子散斑图案干涉测量法测量鼓膜的振动。”

和田 仁: "スペックル干渉法による鼓膜振動計測" 日本機械学会論文集. (投稿中).

Hitoshi Wada：“使用散斑干涉测量法测量鼓膜振动”日本机械工程师学会会议记录（目前正在提交）。

和田 仁: "スペックル干渉法を応用した新しい計測システムによるモルモット鼓膜の振動モード解析" Audiology Japan. (投稿中).

Hitoshi Wada：“使用散斑干涉测量法的新测量系统对豚鼠耳膜进行振动模式分析”Audiology Japan（目前正在提交）。

Hiroshi Wada: "Analysis of vibration mode of the guinea pig tympanic membrane by a new measurement system using electronic speckle pattern interferometry." Audiology Japan. (Submitting).

Hiroshi Wada：“利用电子散斑干涉测量法的新测量系统分析豚鼠鼓膜的振动模式。”