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09/16/2019 - 06:37 | Wissenschaft Externe Nachrichten

Ein Artikel über Onkothermie wurde im Journal of Thermal Biology veröffentlicht

Für den Artikel besuchen Sie bitte die Website der Zeitschrift
Einfluss der Tumoreigenschaften auf Energieabsorption, Temperaturkartierung und Wärmedosis bei 13,56-MHz-Hochfrequenzhyperthermie
Einfluss der Tumoreigenschaften auf Energieabsorption, Temperaturkartierung und Wärmedosis bei 13,56-MHz-Hochfrequenzhyperthermie

Gratulation zu dieser tollen Arbeit!  

Einfluss der Tumoreigenschaften auf Energieabsorption, Temperaturkartierung und Wärmedosis bei 13,56-MHz-Hochfrequenzhyperthermie

Bibin Prasada, Subin Kimb, Woong Chob, Suzy Kimb, Jung Kyung Kimc,⁎
a Department of Mechanical Engineering, Graduate School, Kookmin University, Seoul 02707, Republic of Korea
b Department of Radiation Oncology, SMG-Seoul National University Boramae Medical Center, Seoul 07061, Republic of Korea
c School of Mechanical Engineering and Department of Integrative Biomedical Science and Engineering, Graduate School, Kookmin University, 77 Jeongneung-ro, Seongbuk-gu, Seoul 02707, Republic of Korea

Abstract

Computational techniques can enhance personalized hyperthermia-treatment planning by calculating tissue energy absorption and temperature distribution. This study determined the effect of tumor properties on energy absorption, temperature mapping, and thermal dose distribution in mild radiofrequency hyperthermia using a mouse xenograft model. We used a capacitive-heating radiofrequency hyperthermia system with an operating frequency of 13.56 MHz for in vivo mouse experiments and performed simulations on a computed tomography mouse model. Additionally, we measured the dielectric properties of the tumors and considered temperature dependence for thermal properties, metabolic heat generation, and perfusion. Our results showed that dielectric property variations were more dominant than thermal properties and other parameters, and that the measured dielectric properties provided improved temperature-mapping results relative to the property values taken from previous study. Furthermore, consideration of temperature dependency in the bio heat-transfer model allowed elucidation of precise thermal-dose calculations. These results suggested that this method might contribute to effective thermoradiotherapy planning in clinics.