3D modeling of a hyperthermia electromagnetic applicator

This paper describes the model of an electromagnetic field applicator (waveguide) for oncology hyperthermia which achieves a better EM energy focusing. This technology works with non-ionizing radiation and it does not cause side effects to patients. In this paper, the mathematical design of an applicator based on the waveguide equations is described. A dielectric materials study was carried out in order to know which material had the best performance for its use inside the applicator with the intention of reduce its dimensions. Finally, this paper describes the system modeling with the best dielectric material. The model employed RF analysis, in order to generate EM waves in TE-mode, and the bioheat equation, which relates temperature increases in tissue due to EM waves. The modeling results of the system describe the temperature distributions inside the phantom. This applicator can be used in oncological therapy due to its efficiency and its low cost which represent an extra advantage.