METAMATERIAL ANTENNA ARRAYS FOR IMPROVED UNIFORMITY OF MICROWAVE HYPERTHERMIA TREATMENTS

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21460%2F16%3A00242605" target="_blank" >RIV/68407700:21460/16:00242605 - isvavai.cz</a>

Výsledek na webu

<a href="http://www.jpier.org/PIER/pier.php?volume=156" target="_blank" >http://www.jpier.org/PIER/pier.php?volume=156</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.2528/PIER16012702" target="_blank" >10.2528/PIER16012702</a>

Jazyk výsledku

angličtina

Název v původním jazyce

METAMATERIAL ANTENNA ARRAYS FOR IMPROVED UNIFORMITY OF MICROWAVE HYPERTHERMIA TREATMENTS

Popis výsledku v původním jazyce

Current microwave hyperthermia applicators are not well suited for uniform heating of large tissue regions. The objective of this research is to identify an optimal microwave antenna array for clinical use in hyperthermia treatment of cancer. For this aim we present a novel 434 MHz applicator design based on a metamaterial zeroth order mode resonator, which is used to build larger array configurations. These applicators are designed to effectively heat large areas extending deep below the body surface and in this work they are characterized with numerical simulations in a homogenous muscle tissue model. Their performance is evaluated using three metrics: radiation pattern-based Effective Field Size (EFS), temperature distribution-based Therapeutic Thermal Area (TTA), and Therapeutic Thermal Volume (TTV) reaching 41–45°C. For 2 x 2 and 2 x 3 array configurations, the EFS reaching > 25% of maximum SAR in the 3.5 cm deep plane is 100% and 91% of the array aperture area, respectively. The corresponding TTA for these arrays is 95% and 86%, respectively; and the TTV attaining > 41°C is over 85% of the aperture area to a depth of over 3 cm in muscle, using either array configuration. With theoretical heating performance exceeding that of existing applicators, these new metamaterial zero order resonator arrays show promise for future applications in large area superficial hyperthermia.

Název v anglickém jazyce

METAMATERIAL ANTENNA ARRAYS FOR IMPROVED UNIFORMITY OF MICROWAVE HYPERTHERMIA TREATMENTS

Popis výsledku anglicky

Current microwave hyperthermia applicators are not well suited for uniform heating of large tissue regions. The objective of this research is to identify an optimal microwave antenna array for clinical use in hyperthermia treatment of cancer. For this aim we present a novel 434 MHz applicator design based on a metamaterial zeroth order mode resonator, which is used to build larger array configurations. These applicators are designed to effectively heat large areas extending deep below the body surface and in this work they are characterized with numerical simulations in a homogenous muscle tissue model. Their performance is evaluated using three metrics: radiation pattern-based Effective Field Size (EFS), temperature distribution-based Therapeutic Thermal Area (TTA), and Therapeutic Thermal Volume (TTV) reaching 41–45°C. For 2 x 2 and 2 x 3 array configurations, the EFS reaching > 25% of maximum SAR in the 3.5 cm deep plane is 100% and 91% of the array aperture area, respectively. The corresponding TTA for these arrays is 95% and 86%, respectively; and the TTV attaining > 41°C is over 85% of the aperture area to a depth of over 3 cm in muscle, using either array configuration. With theoretical heating performance exceeding that of existing applicators, these new metamaterial zero order resonator arrays show promise for future applications in large area superficial hyperthermia.

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

JA - Elektronika a optoelektronika, elektrotechnika

OECD FORD obor

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Projekt

<a href="/cs/project/GP14-00386P" target="_blank" >GP14-00386P: Studium tepelných a netepelných účinků vysokovýkonových elektromagnetických polí na strukturu hmoty</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2016

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Progress In Electromagnetics Research

ISSN

1559-8985

e-ISSN

—

Svazek periodika

156

Číslo periodika v rámci svazku

4

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

12

Strana od-do

1-12

Kód UT WoS článku

000389720800001

EID výsledku v databázi Scopus

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