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Open-Ended Coaxial Probe Technique for Dielectric Measurement of Biological Tissues: Challenges and Common Practices

Electromagnetic (EM) medical technologies are rapidly expanding worldwide for both diagnostics and therapeutics. As these technologies are low-cost and minimally invasive, they have been the focus of significant research efforts in recent years. Such technologies are often based on the assumption th...

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Autores principales: La Gioia, Alessandra, Porter, Emily, Merunka, Ilja, Shahzad, Atif, Salahuddin, Saqib, Jones, Marggie, O’Halloran, Martin
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2018
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6023382/
https://www.ncbi.nlm.nih.gov/pubmed/29874833
http://dx.doi.org/10.3390/diagnostics8020040
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author La Gioia, Alessandra
Porter, Emily
Merunka, Ilja
Shahzad, Atif
Salahuddin, Saqib
Jones, Marggie
O’Halloran, Martin
author_facet La Gioia, Alessandra
Porter, Emily
Merunka, Ilja
Shahzad, Atif
Salahuddin, Saqib
Jones, Marggie
O’Halloran, Martin
author_sort La Gioia, Alessandra
collection PubMed
description Electromagnetic (EM) medical technologies are rapidly expanding worldwide for both diagnostics and therapeutics. As these technologies are low-cost and minimally invasive, they have been the focus of significant research efforts in recent years. Such technologies are often based on the assumption that there is a contrast in the dielectric properties of different tissue types or that the properties of particular tissues fall within a defined range. Thus, accurate knowledge of the dielectric properties of biological tissues is fundamental to EM medical technologies. Over the past decades, numerous studies were conducted to expand the dielectric repository of biological tissues. However, dielectric data is not yet available for every tissue type and at every temperature and frequency. For this reason, dielectric measurements may be performed by researchers who are not specialists in the acquisition of tissue dielectric properties. To this end, this paper reviews the tissue dielectric measurement process performed with an open-ended coaxial probe. Given the high number of factors, including equipment- and tissue-related confounders, that can increase the measurement uncertainty or introduce errors into the tissue dielectric data, this work discusses each step of the coaxial probe measurement procedure, highlighting common practices, challenges, and techniques for controlling and compensating for confounders.
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spelling pubmed-60233822018-07-13 Open-Ended Coaxial Probe Technique for Dielectric Measurement of Biological Tissues: Challenges and Common Practices La Gioia, Alessandra Porter, Emily Merunka, Ilja Shahzad, Atif Salahuddin, Saqib Jones, Marggie O’Halloran, Martin Diagnostics (Basel) Review Electromagnetic (EM) medical technologies are rapidly expanding worldwide for both diagnostics and therapeutics. As these technologies are low-cost and minimally invasive, they have been the focus of significant research efforts in recent years. Such technologies are often based on the assumption that there is a contrast in the dielectric properties of different tissue types or that the properties of particular tissues fall within a defined range. Thus, accurate knowledge of the dielectric properties of biological tissues is fundamental to EM medical technologies. Over the past decades, numerous studies were conducted to expand the dielectric repository of biological tissues. However, dielectric data is not yet available for every tissue type and at every temperature and frequency. For this reason, dielectric measurements may be performed by researchers who are not specialists in the acquisition of tissue dielectric properties. To this end, this paper reviews the tissue dielectric measurement process performed with an open-ended coaxial probe. Given the high number of factors, including equipment- and tissue-related confounders, that can increase the measurement uncertainty or introduce errors into the tissue dielectric data, this work discusses each step of the coaxial probe measurement procedure, highlighting common practices, challenges, and techniques for controlling and compensating for confounders. MDPI 2018-06-05 /pmc/articles/PMC6023382/ /pubmed/29874833 http://dx.doi.org/10.3390/diagnostics8020040 Text en © 2018 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).
spellingShingle Review
La Gioia, Alessandra
Porter, Emily
Merunka, Ilja
Shahzad, Atif
Salahuddin, Saqib
Jones, Marggie
O’Halloran, Martin
Open-Ended Coaxial Probe Technique for Dielectric Measurement of Biological Tissues: Challenges and Common Practices
title Open-Ended Coaxial Probe Technique for Dielectric Measurement of Biological Tissues: Challenges and Common Practices
title_full Open-Ended Coaxial Probe Technique for Dielectric Measurement of Biological Tissues: Challenges and Common Practices
title_fullStr Open-Ended Coaxial Probe Technique for Dielectric Measurement of Biological Tissues: Challenges and Common Practices
title_full_unstemmed Open-Ended Coaxial Probe Technique for Dielectric Measurement of Biological Tissues: Challenges and Common Practices
title_short Open-Ended Coaxial Probe Technique for Dielectric Measurement of Biological Tissues: Challenges and Common Practices
title_sort open-ended coaxial probe technique for dielectric measurement of biological tissues: challenges and common practices
topic Review
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6023382/
https://www.ncbi.nlm.nih.gov/pubmed/29874833
http://dx.doi.org/10.3390/diagnostics8020040
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