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

被引：37

作者：

Gun, Li ^{[1
]}

Ning, Du ^{[1
]}

Liang, Zhang ^{[1
]}

机构：

[1] Xian Technol Univ, Sch Elect Informat Engn, Dept Biomed Engn, Xian 710021, Peoples R China

来源：

MATHEMATICAL PROBLEMS IN ENGINEERING | 2017年 / 2017卷

关键词：

DIELECTRIC-PROPERTIES; COMPLEX PERMITTIVITY; BLOOD; CELLS; EXPOSURE; SYSTEMS;

D O I：

10.1155/2017/7249672

中图分类号：

T [工业技术];

学科分类号：

08 ;

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.

引用

页码：1 / 7

页数：7

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