Effect of tumor properties on energy absorption, temperature mapping, and thermal dose in 13.56-MHz radiofrequency hyperthermia.
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.
['Prasad|Bibin|B|', 'Kim|Subin|S|', 'Cho|Woong|W|', 'Kim|Suzy|S|', 'Kim|Jung Kyung|JK|']
D000818:Animals D002294:Carcinoma, Squamous Cell D003198:Computer Simulation D064593:Heterografts D006801:Humans D006979:Hyperthermia, Induced D008175:Lung Neoplasms D051379:Mice D008954:Models, Biological D009369:Neoplasms D011846:Radio Waves D013696:Temperature D013817:Thermography
Tumor property Energy absorption Temperature mapping Thermal dose Hyperthermia Mouse model