Heating control method for resonant cavity applicator using divided type of dielectric bolus for effective hyperthermia treatment

This paper describes a new heating control method for resonant cavity applicator using a divided type of dielectric bolus. The dielectric bolus is divided in to some sections and is attached to human head inside the cavity. The bolus is filled with dielectric materials, such as pure water, saline and so on. By changing dielectric properties of each section, heated region can be controlled. In this paper, first, proposed heating method using the dielectric bolus was described. Second, the results of temperature distributions using 3-D FEM were described. From these results, it was found that the proposed method for controlling the heated area was useful for effective hyperthermia treatments.