About the resonant method of heating magnetic nanoparticles in hyperthermia

A characteristic feature of most magnetic materials is that they have a hysteresis cycle. When the magnetic field goes through the hysteresis cycle multiple times, the energy of the alternating magnetic field is supplied to magnetic nanoparticles located in the area of cancer cells. This energy supplied to the magnetic nanoparticles is converted into heat in the environment. As a result of heating to a certain temperature, diseased cells die, while healthy cells remain undamaged. This is the usual mechanism for heating a cancer tumor in hyperthermia. This work examines the possibility of heating a part of the body under the resonant influence of a radio frequency field. The resonant frequency is formed from the rotational flow of mean square fluctuations of magnetic nanoparticles. It has been shown that by selecting the parameters of the resonant field, it is possible to achieve an increase in tumor temperature by 6 degrees (sufficient to destroy malignant cells) in about 60 s.