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Multiphysics and Thermal Response Models to Improve Accuracy of Local Temperature Estimation in Rat Cortex under Microwave Exposure

Author

Listed:
  • Sachiko Kodera

    (Department of Electrical and Mechanical Engineering, Nagoya Institute of Technology, Nagoya 466-8555, Japan)

  • Jose Gomez-Tames

    (Department of Electrical and Mechanical Engineering, Nagoya Institute of Technology, Nagoya 466-8555, Japan)

  • Akimasa Hirata

    (Department of Electrical and Mechanical Engineering, Nagoya Institute of Technology, Nagoya 466-8555, Japan)

  • Hiroshi Masuda

    (Department of Environmental Medicine, Kurume University School of Medicine, Fukuoka 830-0011, Japan)

  • Takuji Arima

    (Department of Electrical and Electronics Engineering, Tokyo University of Agriculture and Technology, Tokyo 184-8588, Japan)

  • Soichi Watanabe

    (Electromagnetic Compatibility Laboratory, Applied Electromagnetic Research Institute, National Institute of Information and Communications Technology, Tokyo 184-8795, Japan)

Abstract

The rapid development of wireless technology has led to widespread concerns regarding adverse human health effects caused by exposure to electromagnetic fields. Temperature elevation in biological bodies is an important factor that can adversely affect health. A thermophysiological model is desired to quantify microwave (MW) induced temperature elevations. In this study, parameters related to thermophysiological responses for MW exposures were estimated using an electromagnetic-thermodynamics simulation technique. To the authors’ knowledge, this is the first study in which parameters related to regional cerebral blood flow in a rat model were extracted at a high degree of accuracy through experimental measurements for localized MW exposure at frequencies exceeding 6 GHz. The findings indicate that the improved modeling parameters yield computed results that match well with the measured quantities during and after exposure in rats. It is expected that the computational model will be helpful in estimating the temperature elevation in the rat brain at multiple observation points (that are difficult to measure simultaneously) and in explaining the physiological changes in the local cortex region.

Suggested Citation

  • Sachiko Kodera & Jose Gomez-Tames & Akimasa Hirata & Hiroshi Masuda & Takuji Arima & Soichi Watanabe, 2017. "Multiphysics and Thermal Response Models to Improve Accuracy of Local Temperature Estimation in Rat Cortex under Microwave Exposure," IJERPH, MDPI, vol. 14(4), pages 1-17, March.
    • Handle: RePEc:gam:jijerp:v:14:y:2017:i:4:p:358-:d:94566
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    Cited by:

    1. Sachiko Kodera & Akimasa Hirata, 2018. "Comparison of Thermal Response for RF Exposure in Human and Rat Models," IJERPH, MDPI, vol. 15(10), pages 1-17, October.

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