Johnson R H, Preece A W, Green J L
Oncology Research Unit, Bristol Royal Infirmary, UK.
Phys Med Biol. 1990 Jun;35(6):761-79. doi: 10.1088/0031-9155/35/6/006.
There is evidence that heating of malignant tissue in the treatment of cancer may be beneficial and so the performance of different applicator designs needs to be established. A theoretical model of the dielectric loaded waveguide applicator is compared with models of two other applicators which depend on energy radiated from conductors carrying high frequency current. The latter are exemplified by the compact resonant patch applicator and the lightweight inductive current sheet applicator. It is shown that heating profiles and field penetration of each applicator are similar for equal radiating areas, and these results have been substantiated experimentally. Impedance match as a function of frequency and load is also compared for the three types of applicator.
有证据表明，在癌症治疗中对恶性组织进行加热可能有益，因此需要确定不同施源器设计的性能。将加载电介质的波导施源器的理论模型与另外两种施源器的模型进行了比较，后两种施源器依赖于承载高频电流的导体辐射的能量。紧凑型谐振贴片施源器和轻质感应电流片施源器就是后者的例子。结果表明，对于相等的辐射面积，每种施源器的加热分布和场穿透情况相似，并且这些结果已通过实验得到证实。还比较了这三种施源器的阻抗匹配随频率和负载的变化情况。
