Abstract
In this paper, the heating properties of a resonant cavity applicator for heating brain tumors, calculated by a finite element method (FEM) with blood perfusion are described. We have already proposed the resonant cavity applicator system for treating brain tumors. We checked the effectiveness of the applicator using a prototype heating system with an agar phantom First, we construct a simple model with blood vessels for calculating temperature distributions using the FEM. In the simple model, a single thick blood vessel branches into two narrow blood vessels. Second, calculated temperature distributions are presented by solving the heat-flow equation. Also, comparisons of the temperature distributions when changing the flow conditions are discussed. Here, two resonant frequency patterns are used. From these results, it was found that the cooling effects of blood perfusion appear in the heated area approximately 2 cm away from the blood vessels.
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