MRIのRF照射位置に依存した共振回路の励磁周波数変化

概要

論文の詳細を見る
Hyperthermia using implants is a cancer treatment in which cancer tissue is heated to over 42.5 °C to selectively kill the cancer cells. In this study, a resonant circuit was used as an implant, and a weak magnetic field of RF pulses from a magnetic resonance imaging (MRI) device was used as an excitation source. We report here how the temperature of the resonant circuit was controlled by changing the excitation frequency of the MRI. As a result, the temperature rise of the resonant circuit was successfully found to depend on its position in the MRI device. This significant result indicates that the temperature of the resonant circuit can be controlled only by adjusting the excitation position. Accurate temperature control is therefore expected to be possible by combining this control technique with the temperature measurement function of MRI equipment.
社団法人　日本磁気学会の論文