Recently, several treatments for fighting malignant tumors have been designed. However these procedures have well
known inconveniences, depending on their applicability, tumor size and side effects, among others. Magnetic
hyperthermia is a safe, non-invasive method for cancer therapy. This treatment is applied via elevation of target tissue
temperature by dissipation of heat from Magnetic Nanoparticles (MNPs), previously located within the tumor. The
induction of heat causes cell death and therefore the removal of the tumor.
In this work the thermal diffusion in phantoms of agar loaded with magnetic nanoparticles (MNPs) is studied using the
infrared thermography technique, which is widely used in biology/medicine (e.g. skin temperature mapping). Agar is one
of the materials used to simulate different types of body tissues, these samples are known as “phantoms”. Agar is of
natural origin, low cost and high degree of biocompatibility. In this work the agar gel was embedded with MNPs by coprecipitation
and placed in an alternating magnetic field radiation. As a consequence, the energy from the radiation
source is dissipated as heat and then transferred from the MNP to the gel, increasing its temperature.
For the temperature analysis, the samples of agar gel were stimulated by RF magnetic field generated by coils. Heating
was measured with infrared thermography using a Thermovision A20M infrared camera. Thermographic images allowed
obtaining the dependence of thermal diffusion in the phantom as a function of the magnitude of the applied RF magnetic
field and the load of magnetic particles.