Dielectric properties of tissues and biological materials: a critical review.
Dielectric properties of tissues and biological materials: a critical review.
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发表时间：
1989
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通讯作者：
K. Foster;H. Schwan
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作者：
K. Foster;H. Schwan
我们批判性地综述了从直流到20吉赫兹的组织及其他生物材料的体电特性，重点关注导致这些特性的潜在机制。我们总结了介电弛豫背后的经典原理，并批判性地综述了该领域的最新进展。特别的主题包括反离子极化效应理论的近期重大进展总结、癌症组织与正常组织的介电特性、低含水量组织的特性以及宏观场耦合考虑因素。最后，组织的介电特性被总结为与组织含水量及其他成分变量的经验相关性；此外，还给出了一个介电特性的综合表格。组织的体电特性是电场或电流的许多生物工程应用所必需的，并且它们为理解电场与组织相互作用的基本机制提供了见解。
We critically review bulk electrical properties of tissues and other biological materials, from DC to 20 GHz, with emphasis on the underlying mechanisms responsible for the properties. We summarize the classical principles behind dielectric relaxation and critically review recent developments in this field. Special topics include a summary of the significant recent advances in theories of counterion polarization effects, dielectric properties of cancer vs. normal tissues, properties of low-water-content tissues, and macroscopic field-coupling considerations. Finally, the dielectric properties of tissues are summarized as empirical correlations with tissue water content in other compositional variables; in addition, a comprehensive table is presented of dielectric properties. The bulk electrical properties of tissues are needed for many bioengineering applications of electric fields or currents, and they provide insight into the basic mechanisms that govern the interaction of electric fields with tissue.