The use of electromagnetic fields in biomedicine for cancer treatment and diagnostics, nowadays begin to be quite widespread. This paper describes the design and the evaluation of a microwave applicator for treatment of small subcutaneous tumours implanted on animal model. The support of computer simulations was used to evaluate and optimise the fundamental parameters of the applicator and the temperature distribution in the biological tissue. The Results give the prospective to use this applicator for the study of the effects of hyperthermia treatment in relation with the characteristics of the treated tumour.
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