Measurement and image-based estimation of dielectric properties of biological tissues -past, present, and future

Authors: Sasaki K, Porter E, Rashed EA, Farrugia L, Schmid G

Year: 2022 Jul 8

Category: Biophysics

Journal: Phys Med Biol

DOI: 10.1088/1361-6560/ac7b64

URL: https://iopscience.iop.org/article/10.1088/1361-6560/ac7b64

Abstract

Overview

The dielectric properties of biological tissues are crucial parameters necessary for accurately modeling electromagnetic interactions with the human body. This review article delves deep into the advancements and methodologies developed since the creation of the primary dielectric properties database back in 1996.

Findings

  • The initial database established in 1996 focused on frequencies from 10 Hz to 20 GHz and was pivotal in the realm of human protection against non-ionizing radiation.
  • This update expands the frequency range up to 1 THz and includes both normal and malignant tissues, thus enhancing the applicability of the database in medical research.
  • A comparative analysis of dielectric properties across different types of tissues is highlighted, reflecting reported data and contributions from recent technological advancements in imaging-based estimation techniques.

Conclusion

This comprehensive review underlines the critical ongoing need for refined electromagnetic models of the human body, a venture made possible by improving our understanding of tissue dielectric properties. It highlights essential areas for ongoing research to further enhance human protection from electromagnetic fields.

dielectric properties biological tissues electromagnetic modeling non-ionizing radiation human protection
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