Matsuda T, Takatsuka S, Nikawa Y, Kikuchi M
Department of Radiation Therapy, Tokyo Metropolitan Komagome Hospital, Japan.
Int J Hyperthermia. 1990 May-Jun;6(3):685-96. doi: 10.3109/02656739009140964.
Heating experiments on phantoms and miniature pigs were performed using two types of lens applicator and a conventional waveguide applicator fed by a 430 MHz microwave heating system (HTS-100, manufactured by Tokyo Keiki Co., Ltd). Temperature distributions in agar phantoms and miniature pigs were measured at regular intervals during heating. The following results were thus obtained: (1) The effective heating depth varied with the focal length, showing the lens effect. (2) Using a four-aperture lens applicator in miniature pigs, a heating depth of 6 cm was obtained. This almost doubles the depth of conventional waveguide applicator. The heating area was 12 X 6 cm at the depth of 4 cm. (3) Dielectric properties of the buttocks of the miniature pig were virtually identical to those of the agar phantom containing 0.35% NaCl and 0.05% NaN3.
使用两种类型的透镜施源器和由430兆赫微波加热系统（HTS - 100，由东京计器株式会社制造）馈电的传统波导施源器，对体模和小型猪进行了加热实验。在加热过程中定期测量琼脂体模和小型猪体内的温度分布。从而获得了以下结果：（1）有效加热深度随焦距变化，呈现透镜效应。（2）在小型猪中使用四孔径透镜施源器，获得了6厘米的加热深度。这几乎是传统波导施源器深度的两倍。在4厘米深度处加热面积为12×6厘米。（3）小型猪臀部的介电特性与含有0.35%氯化钠和0.05%叠氮化钠的琼脂体模的介电特性几乎相同。
