Surowiec A, Bicher H I
Valley Cancer Institute, Los Angeles, CA 90066, USA.
J Microw Power Electromagn Energy. 1995;30(3):135-40. doi: 10.1080/08327823.1995.11688269.
A deep heating hyperthermia device TRIPAS (a triapplicator system) consisting of three independent, dielectrically loaded horn applicators operating in phase at 300 MHz was investigated. The heating characteristics produced by this hyperthermia system were analyzed by means of thermochromic liquid-crystal cards and a modified CDRH (Center for Devices and Regulatory Health) elliptical phantom. Both homogenous and inhomogeneous phantoms were used, simulating high and low permittivity tissues (muscle and lung). These equivalent tissues were made of polyacrylamide gel. The semiquantitative heating pattern analysis showed a central heating of 1/3 of maximum heating at a depth of 10 cm in both homogenous (muscle) and heterogenous (muscle/fat) phantoms. Also more uniform temperature/SAR distributions were generated in muscle equivalent material than those in lung.
研究了一种深部热疗高温设备TRIPAS（一种三辐射器系统），它由三个独立的、在300MHz同相运行的介质加载喇叭辐射器组成。通过热致变色液晶卡和改良的CDRH（设备与监管健康中心）椭圆形体模分析了该热疗系统产生的加热特性。使用了均匀和非均匀体模，模拟高介电常数和低介电常数组织（肌肉和肺）。这些等效组织由聚丙烯酰胺凝胶制成。半定量加热模式分析表明，在均匀（肌肉）和非均匀（肌肉/脂肪）体模中，在10cm深度处的中心加热为最大加热的1/3。此外，与肺等效材料相比，在肌肉等效材料中产生的温度/SAR分布更均匀。
