Journal of Medical Ultrasonics

, Volume 43, Issue 4, pp 473–479 | Cite as

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

  • Keisuke Imade
  • Takashi Kageyama
  • Daisuke Koyama
  • Yoshiaki Watanabe
  • Kentaro Nakamura
  • Iwaki Akiyama
Original Article

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.

Keywords

FBG Viscous heating 

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Copyright information

© The Japan Society of Ultrasonics in Medicine 2016

Authors and Affiliations

  • Keisuke Imade
    • 1
  • Takashi Kageyama
    • 1
  • Daisuke Koyama
    • 1
  • Yoshiaki Watanabe
    • 1
  • Kentaro Nakamura
    • 2
  • Iwaki Akiyama
    • 1
  1. 1.Medical Ultrasound Research CenterDoshisha UniversityKyotanabeJapan
  2. 2.Precision and Intelligence LaboratoryTokyo Institute of TechnologyYokohamaJapan

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