A method is provided wherein a suspension containing ferromagnetic particles is introduced into a body, and the particles are caused to move towards a tumor and are retained there by a magnetic field. The area of the tumor is exposed to an electromagnetic field to carry out hyperpyrexia of the tumor...http://www.google.fr/patents/US5067952?utm_source=gb-gplus-shareBrevet US5067952 - Method and apparatus for treating malignant tumors by local hyperpyrexia
Method and apparatus for treating malignant tumors by local hyperpyrexia