SAR analysis of the improved resonant cavity applicator by a 3-D FEM
This paper discusses the improvement of the reentrant resonant cavity applicator,such as an electromagnetic shield and water bolus for concentrating heating energy on deep tumors in an abdominal region of a human body.In our previous study,it was found that undesirable areas such as a neck,arm,hip and breast were heated when heating the abdomen with the developed applicator.Therefore,we have improved the resonant cavity applicator to overcome this problem.First,a cylindrical shield made of an aluminum alloy was installed inside the cavity.It was designed to protect non-tumorous areas from concentrated electromagnetic fields.Second,in order to concentrate heating energy on deep tumors inside the human body,a water bolus was installed around the human body surface.In this study,to evaluate the effectiveness of the proposed methods,specific absorption rate (SAR) distributions were calculated by FEM with the 3-D anatomical human body model reconstructed from MRI images.From these results,it was confirmed that the improved heating system was effective to non-invasively heat abdominal deep tumors.
Resonant cavity 3-D anatomical human model Non-invasive hyperthermia SAR distribution Abdominal deep tumors
Y. Shindo Y. Iseki J. Arakawa M. Kubo K. Kato T. Uzuka H. Takahashi
Department of Mechanical Engineering Informatics, Meiji University, Kanagawa, Japan Graduate School of Science and Technology, Meiji University, Kanagawa, Japan Future Creation Laboratory, Olympus Co. Ltd., Tokyo, Japan Niigata Cancer Center, Section of Neurosurgery, Niigata, Japan
国际会议
World Congress on Medical Physics and Biomedical Engineering (2012年医学物理及生物医学工程国际会议(IFMBE))
北京
英文
1620-1623
2012-05-26（万方平台首次上网日期，不代表论文的发表时间）