Aghayan Seyed Ali, Sardari Dariush, Mahdavi Seied Rabi Mehdi, Mohammadi Maryam
Department of Engineering, Science and Research Branch, Islamic Azad University, 14155-775, Tehran, 14778 93855, Islamic Republic of Iran,
Australas Phys Eng Sci Med. 2014 Dec;37(4):691-703. doi: 10.1007/s13246-014-0306-5. Epub 2014 Oct 16.
In this paper we present a simulation study of the induced specific absorption rate (SAR) within the phantom produced by radiofrequency radiation from a 8 MHz capacitive applicator. The main focus of the current study is on demonstrating the beam shaping properties of the bolus system as well as its effect on controlling the therapeutic area. Different electrical conductivities and geometries of the bolus were considered in the simulation of induced SAR distributions in a muscle-equivalent model with uniform dielectric properties. To validate the presented model, we carried out a comparison between the SAR simulation results and the temperature measurements in an agar split-phantom and an excellent agreement was observed.
在本文中，我们展示了一项关于8MHz电容式 applicator产生的射频辐射在体模内诱导比吸收率（SAR）的模拟研究。当前研究的主要重点是展示推注系统的波束整形特性及其对控制治疗区域的影响。在具有均匀介电特性的肌肉等效模型中模拟诱导SAR分布时，考虑了推注的不同电导率和几何形状。为了验证所提出的模型，我们在琼脂分体模中对SAR模拟结果和温度测量值进行了比较，观察到了很好的一致性。
