Development of Millimeter and Submillimeter wave Irradiation Apparatus for Living Body

在本研究项目中，我们利用专门设计的回旋加速器FU-IV作为辐射源，研制了一种适用于活体照射的导管装置。回旋管工作在连续和脉冲模式下，频率为302 GHz，功率为30W。辐照实验所用天线为喇叭天线和聚四氟乙烯棒天线。这是回旋管首次应用于活体辐射装置。对辐照样品的变性分布和表面温度的初步测量表明，它们适合用于常见的活体辐射装置。对活体大鼠和小鼠移植的癌症肿瘤的照射证实了癌症照射装置的正常运行。正在进行改进，以增强细导管波导和天线的亚毫米波的窄焦点，以便在更高的频率上进行局部辐射。

In this research project, we have developed a catheter apparatus suitable for irradiation on the living bodies using a specially designed gyrotron, GYROTRON FU-IV, as a radiation source. The gyrotron is operated in both CW andpulsed regime at TE_<03> mode with the frequency 302 GHz and the power 30 W. The used antennas for the irradiation experiments are a horn antenna and Teflon rod antennas. This is the first application of gyrotrons to radiation apparatus for the living body.Preliminary measurements on the denaturation distribution and the surface temperature of irradiated samples suggest that they are appropriate for the common radiation apparatus for the living body.Irradiation on living rats and a cancerous tumor implanted in mice confirms the normal operation of the radiation apparatus for a cancer. Improvements are underway to enhance the slim catheter waveguide and the narrow focus of submillimeter wave of the antenna to allow localized radiation at still higher frequencies.