Measurement of sound pressure and temperature in tissue-mimicking material using an optical fiber Bragg grating sensor期刊界 All Journals 搜尽天下杂志传播学术成果专业期刊搜索期刊信息化学术搜索

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Measurement of sound pressure and temperature in tissue-mimicking material using an optical fiber Bragg grating sensor

Authors:	Keisuke Imade Takashi Kageyama Daisuke Koyama Yoshiaki Watanabe Kentaro Nakamura Iwaki Akiyama

Institution:	1.Medical Ultrasound Research Center,Doshisha University,Kyotanabe,Japan;2.Precision and Intelligence Laboratory,Tokyo Institute of Technology,Yokohama,Japan

Abstract:	Purpose The experimental investigation of an optical fiber Bragg grating (FBG) sensor for biomedical application is described. The FBG sensor can be used to measure sound pressure and temperature rise simultaneously in biological tissues exposed to ultrasound. The theoretical maximum values that can be measured with the FBG sensor are 73.0 MPa and 30 °C. Methods In this study, measurement of sound pressure up to 5 MPa was performed at an ultrasound frequency of 2 MHz. A maximum temperature change of 6 °C was measured in a tissue-mimicking material. Results Values yielded by the FBG sensor agreed with those measured using a thermocouple and a hydrophone. Conclusion Since this sensor is used to monitor the sound pressure and temperature simultaneously, it can also be used for industrial applications, such as ultrasonic cleaning of semiconductors under controlled temperatures.

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