ハイパーサーミア用発熱体における金属環の構成に関する検討(生体磁気・医療応用)

概要

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Hyperthermia is a method of treating cancer that uses heat to destroy tumors. Soft heating has been proposed as one method of treating hyperthermia. This is where the thermosensitive ferrite inserted into the tumor as a heating element produces heat in a high-frequency magnetic field. Although the heater needs to be implanted the heater in the tumor tissue, there are various advantages to soft heating, such as easy retreatment, localized heating of the tumor, and a low degree of invasiveness. We applied soft heating in this study. We created a complex heater composed of thermosensitive ferrite wound on a metallic ring. It produced a greater amount of heat due to losses through hysteresis and inductive current than thermosensitive ferrite alone. We could also control the temperature of the heater by using the Curie-point. To use this technique, it is necessary to miniaturize the element and achieve optimal performance. We demonstrated that the proposed heater has superior performance and operation at high power.
社団法人日本磁気学会の論文
2007-05-01