Fundamental Study on Cancer Therapy by Blocking Newborn Blood Vessels Using a Rotating Magnetic Field

Abstract

Abstract In this study, we examined a novel cancer therapy by blocking newborn blood vessels with ferromagnetic particles. In this treatment, we try to necrose cancer by accumulating and aggregating the ferromagnetic particles inside the newborn blood vessels. Practically, this method needs to accumulate the particles in the deep part of the body, so the use of superconducting solenoidal magnets is essential. In addition, a design of magnetic field for accumulating the particles selectively in newborn blood vessels is necessary. We designed a rotating magnetic field that can locally accumulate the particles within a spherical range of 10 mm in diameter, 200 mm away from a source of magnetic field. According to the result of experiment and particle trajectory calculation, it was found that the accumulation range of the ferromagnetic particles can be controlled by the rotation frequency of the rotating magnetic field.