On the Dielectric Characterization of Biological Samples for Microwave Imaging Reconstruction

2022 IEEE International Symposium on Antennas and Propagation and USNC-URSI Radio Science Meeting (AP-S/URSI) Pub Date : 2022-07-10 DOI:10.1109/AP-S/USNC-URSI47032.2022.9887074

P. Samaddar, Sunil Gaddam, Muhammad Khan, Sayan Roy, D. Mitra, S. P. Arunachalam

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引用次数: 4

Abstract

Dielectric characteristics of tissues can be useful to develop new therapies and diagnostics through microwave imaging reconstruction. For accurate measurements, dielectric testing probe needs to be placed inside the tissue. This maximizes the contact between the probe-end and the tissue for better results. In practice, tissue samples may not always have enough depth for probe placement. This paper presents a study using the finite integration technique (FIT)-based 3D electromagnetic full-wave simulations to investigate the feasibility of a slim-form probe placed on top of the tissue (zero insertion depth). Complex permittivity of the biological tissue samples was calculated using the simulation results to match the tissue’s characteristics based on a previously proposed mathematical model. Overall, very good agreement was observed between the analytical and calculated dielectric characteristics of biological tissues up to 8 GHz frequency.

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微波成像重建中生物样品介电特性的研究

组织的介电特性可以通过微波成像重建来开发新的治疗和诊断方法。为了精确测量，介电测试探针需要放置在组织内部。这使探针端与组织之间的接触最大化，从而获得更好的结果。在实践中，组织样本可能并不总是有足够的深度来放置探针。本文提出了一项研究，利用有限积分技术(FIT)为基础的三维电磁全波模拟来研究一个细长形式的探针放置在组织顶部(零插入深度)的可行性。基于先前提出的数学模型，利用模拟结果计算生物组织样品的复介电常数，以匹配组织的特性。总体而言，在8 GHz频率范围内，生物组织的介电特性的分析结果与计算结果非常吻合。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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2022 IEEE International Symposium on Antennas and Propagation and USNC-URSI Radio Science Meeting (AP-S/URSI)

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