On the experimental validation of deep hyperthermia devices: study of representative phantoms

Simple phantoms are often used both in experimental and numerical studies devoted to the validation and optimization of hyperthermia devices [1-3]. These phantoms help in the settlement of the devices excitation to reach a definite goal, i.e., to focalize the electromagnetic power absorption in definite positions within the body without inducing hot spot in other positions. Their simplicity allows experimental verification by measuring the electric field or the temperature increase and performing simple comparisons with numerical results. The question is how representative are simple phantoms with respect to the electromagnetic and temperature distribution achievable by hyperthermia devices in the human body. Additionally, what are the tissues and organs that should be considered to make these phantoms representatives and, at the same time, keep them as simple as possible for easiness of use.