Abstract

In the Magnetic Hyperthermia - the control of the temperature field within the malignant tissues is an important task which receives a considerable attention in the all experimental and theoretical researches. A temperature analysis focus the main parameters which influences strongly this therapy. The spatial distribution of the particles influences significantly the temperature field developed within a malignant tissue, when an external time - dependent magnetic field is applied. This paper analyses the temperature field induced by the particulate systems (magnetite and maghemite) with an exponential spatial distribution within a concentric tissues configuration (malignant and healthy tissues). The temperature field developed by these magnetic systems was computed using an analytical model which predicts the temperature at every point. This model was developed in order to compute the isothermal surfaces in the range of the therapeutic temperature range: 42÷46°C. The parameters involved in the burning process of the malignant tissues are optimized to get the uniform hyperthermic temperatures within malignant tissues for a corresponding clinically particle dosage.

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