一种用于骨癌热疗的新型柔性天线阵列设计

M. D. Geyikoglu, H. Koc Polat, B. Cavusoglu
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引用次数: 2

摘要

这项工作提出了一种新的柔性弯曲偶极子天线阵列,专门设计用于治疗骨肿瘤,用热消融。在CST(计算机仿真技术)程序中进行了电磁和热模拟。测试了天线阵列的灵活性和不同输入功率的性能。一个由皮肤、脂肪、肌肉组成的三层骨幻影被制造出来。从回波损耗和指向性特性两方面对天线性能进行了评价。采用可变输入功率(1W ~ 5W)。通过电磁模拟计算了比吸收率(SAR),并将其作为热模拟的输入。根据对假体进行的热模拟结果,研究了放置在骨中的肿瘤组织(15mm)的温升。根据不同的输入功率,在20分钟的暴露时间内,检测了用于骨肿瘤治疗的天线阵列的有效性。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
A New FlexibleAntenna Array Design for Hyperthermia Treatment of Bone Cancer
This work presents a new flexible meandered dipole antenna array designed specifically to treat, with thermal ablation, bone tumors. Electromagnetic and thermal simulations were performed in the CST (computer simulation technology) program. The performance of the antenna arrays was tested for flexibility and different input powers. A three-layer bone phantom was created, including skin, fat, muscle. The antenna performance was evaluated in terms of return loss and directivity characteristics. Variable input power (1W − 5W) was applied. The specific absorption rate (SAR) was calculated through the electromagnetic simulations and it was used as an input for the thermal simulations. According to the results of the thermal simulations performed on the phantom, temperature rise on tumor tissue (15mm) placed in the bone was examined. The effectiveness of the antenna array, designed for use in the treatment of bone tumors, was examined according to different input powers for 20 min exposure time.
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