Study of Millimeter and Submillimeter wave Catheter for a Irradiation Apparatus

在本研究项目中，我们开发了一种导管装置，适用于使用专门设计的回旋管GYROTRON FUIV作为辐射源照射活体。回旋管工作在连续和脉冲两种工作模式，工作在中功率TE_<03>和TE_<32>模，频率分别为302 GHz和238 GHz。这是回旋管首次应用于生物体辐射装置。对辐照样品的变性分布和表面温度的初步测量表明，回旋管适用于普通生物体辐射装置。对活体大鼠表面温度的测量证实了癌症辐射装置的正常工作。正在进行改进，以增强细长导管波导和天线的亚毫米波的窄焦点，以允许在更高频率下的局部辐射。

In this research project, we have developed a catheter apparatus suitable for irradiation the living bodies using a specially designed gyrotron, GYROTRON FUIV, as a radiation source. The gyrotron is operated in both CW and pulsed regime at middle power TE_<03> and TE_<32> modes with frequencyies 302 GHz and 238 GHz. 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.Measurement of the surface temperature of a living rats 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.