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Effective Permittivity of Biological Tissue: Comparison of Theoretical Model and Experiment

机译：生物组织的有效介电常数：理论模型与实验的比较

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摘要

Permittivity of biological tissue is a critical issue for studying the biological effects of electromagnetic fields. Many theories and experiments were performed to measure or explain the permittivity characteristics in biological tissue. In this paper, we investigate the permittivity parameter in biological tissues via theoretical and experimental analysis. Firstly, we analyze the permittivity characteristic in tissue by using theories on composite material. Secondly, typical biological tissues, such as blood, fat, liver, and brain, aremeasured by HP4275AMulti-Frequency LCRMeter within 10 kHz to 10MHz. Thirdly, experimental results are compared with the Bottcher-Bordewijk model, the Skipetrov equation, and the Maxwell-Gannett theory. From the theoretical perspective, blood and fat are regarded as the composition of liver and brain because of the high permittivity in blood and the opposite in fat. Volume fraction of blood in liver and brain is analyzed theoretically, and the applicability and the limitation of the models are also discussed. These results benefit further study on local biological effects of electromagnetic fields.
机译：生物组织的介电常数是研究电磁场生物学效应的关键问题。进行了许多理论和实验以测量或解释生物组织中的介电常数特性。在本文中，我们通过理论和实验分析来研究生物组织中的介电常数参数。首先，我们利用复合材料理论来分析组织的介电常数特性。其次，使用HP4275A多频LCRMeter在10 kHz至10MHz范围内测量典型的生物组织，例如血液，脂肪，肝和脑。第三，将实验结果与Bottcher-Bordewijk模型，Skipetrov方程和Maxwell-Gannett理论进行比较。从理论上讲，由于血液中的高介电常数和脂肪中的相对介电常数，血液和脂肪被视为肝脏和大脑的组成。从理论上分析了肝脏和大脑中血液的体积分数，并讨论了该模型的适用性和局限性。这些结果有助于进一步研究电磁场的局部生物学效应。

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  • 来源
    《Mathematical Problems in Engineering》 |2017年第6期|7249672.1-7249672.7|共7页
  • 作者

    Gun Li; Ning Du; Liang Zhang;

  • 作者单位

    Xian Technol Univ, Sch Elect Informat Engn, Dept Biomed Engn, Xian 710021, Peoples R China;

    Xian Technol Univ, Sch Elect Informat Engn, Dept Biomed Engn, Xian 710021, Peoples R China;

    Xian Technol Univ, Sch Elect Informat Engn, Dept Biomed Engn, Xian 710021, Peoples R China;

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