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Two 27 MHz Simple Inductive Loops, as Hyperthermia Treatment Applicators: Theoretical Analysis and Development

Background. Deep heating is still the main subject for research in hyperthermia treatment. Aim. The purpose of this study was to develop and analyze a simple loop as a heating applicator. Methods. The performance of two 27 MHz inductive loop antennas as potential applicators in hyperthermia treatmen...

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Autores principales: Kouloulias, Vassilis, Karanasiou, Irene, Koutsoupidou, Maria, Matsopoulos, George, Kouvaris, John, Uzunoglu, Nikolaos
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Hindawi Publishing Corporation 2015
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4663302/
https://www.ncbi.nlm.nih.gov/pubmed/26649070
http://dx.doi.org/10.1155/2015/751035
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author Kouloulias, Vassilis
Karanasiou, Irene
Koutsoupidou, Maria
Matsopoulos, George
Kouvaris, John
Uzunoglu, Nikolaos
author_facet Kouloulias, Vassilis
Karanasiou, Irene
Koutsoupidou, Maria
Matsopoulos, George
Kouvaris, John
Uzunoglu, Nikolaos
author_sort Kouloulias, Vassilis
collection PubMed
description Background. Deep heating is still the main subject for research in hyperthermia treatment. Aim. The purpose of this study was to develop and analyze a simple loop as a heating applicator. Methods. The performance of two 27 MHz inductive loop antennas as potential applicators in hyperthermia treatment was studied theoretically as well as experimentally in phantoms. Two inductive loop antennas with radii 7 cm and 9 cm were designed, simulated, and constructed. The theoretical analysis was performed by using Green's function and Bessel's function technique. Experiments were performed with phantoms radiated by the aforementioned loop antennas. Results. The specific absorption rate (SAR) distributions were estimated from the respective local phantom temperature measurements. Comparisons of the theoretical, simulation, and experimental studies showed satisfying agreement. The penetration depth was measured theoretically and experimentally in the range of 2–3.5 cm. Conclusion. The theoretical and experimental analysis showed that current loops are efficient in the case where the peripheral heating of spherical tumor formation located at 2–3.5 cm depth is required.
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spelling pubmed-46633022015-12-08 Two 27 MHz Simple Inductive Loops, as Hyperthermia Treatment Applicators: Theoretical Analysis and Development Kouloulias, Vassilis Karanasiou, Irene Koutsoupidou, Maria Matsopoulos, George Kouvaris, John Uzunoglu, Nikolaos Comput Math Methods Med Research Article Background. Deep heating is still the main subject for research in hyperthermia treatment. Aim. The purpose of this study was to develop and analyze a simple loop as a heating applicator. Methods. The performance of two 27 MHz inductive loop antennas as potential applicators in hyperthermia treatment was studied theoretically as well as experimentally in phantoms. Two inductive loop antennas with radii 7 cm and 9 cm were designed, simulated, and constructed. The theoretical analysis was performed by using Green's function and Bessel's function technique. Experiments were performed with phantoms radiated by the aforementioned loop antennas. Results. The specific absorption rate (SAR) distributions were estimated from the respective local phantom temperature measurements. Comparisons of the theoretical, simulation, and experimental studies showed satisfying agreement. The penetration depth was measured theoretically and experimentally in the range of 2–3.5 cm. Conclusion. The theoretical and experimental analysis showed that current loops are efficient in the case where the peripheral heating of spherical tumor formation located at 2–3.5 cm depth is required. Hindawi Publishing Corporation 2015 2015-11-16 /pmc/articles/PMC4663302/ /pubmed/26649070 http://dx.doi.org/10.1155/2015/751035 Text en Copyright © 2015 Vassilis Kouloulias et al. https://creativecommons.org/licenses/by/3.0/ This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
spellingShingle Research Article
Kouloulias, Vassilis
Karanasiou, Irene
Koutsoupidou, Maria
Matsopoulos, George
Kouvaris, John
Uzunoglu, Nikolaos
Two 27 MHz Simple Inductive Loops, as Hyperthermia Treatment Applicators: Theoretical Analysis and Development
title Two 27 MHz Simple Inductive Loops, as Hyperthermia Treatment Applicators: Theoretical Analysis and Development
title_full Two 27 MHz Simple Inductive Loops, as Hyperthermia Treatment Applicators: Theoretical Analysis and Development
title_fullStr Two 27 MHz Simple Inductive Loops, as Hyperthermia Treatment Applicators: Theoretical Analysis and Development
title_full_unstemmed Two 27 MHz Simple Inductive Loops, as Hyperthermia Treatment Applicators: Theoretical Analysis and Development
title_short Two 27 MHz Simple Inductive Loops, as Hyperthermia Treatment Applicators: Theoretical Analysis and Development
title_sort two 27 mhz simple inductive loops, as hyperthermia treatment applicators: theoretical analysis and development
topic Research Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4663302/
https://www.ncbi.nlm.nih.gov/pubmed/26649070
http://dx.doi.org/10.1155/2015/751035
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