リアルタイム体内線量測定システムにおける回転磁界を用いた給電システム

概要

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Radiation is one treatment for cancer, and it is used together with other therapies. The accuracy of irradiation has recently improved due to advances in image diagnosis processors such as CT, MRI, and external irradiation machines. However, real-time data on internal doses near the focus are required to treat cancers effectively. Therefore, an implantable dosimeter with a wireless signal transmission system is needed. The dosimeter also needs a wireless power feeding system to drive the internal circuit. However, depending on where the internal elements are placed, there may be cases when power feeding cannot be achieved with conventional solenoid or spiral coils. To solve this problem, we suggest a new model for the feeding coil that can generate multi-directional excitation. If the feeding coil can generate multi-directional excitation, we can supply sufficient power to drive the internal circuit to the internal element. We studied an external feeding circuit and measured the feeding area where we could supply power to the internal element regardless of the position or direction of the internal elements that had been installed.
社団法人　日本磁気学会の論文