【作者】 唐露新； 姚欢； 刘军； 刘辉； 唐劲天；

【Author】 Tang Luxin~1 Yao Huan~1 Liu Jun~1 Liu Hui~1 Tang Jintian~2 (1 College of Information Engineering,Guangdong University of Technology,Guangzhou 510006,China; 2 Department of Engineering Physics,Institute of Medical Physics and Engineering,Tsinghua University,Beijing 100084,China)

【机构】 广东工业大学信息工程学院； 清华大学工程物理系医学物理与工程研究所；

【摘要】 交变磁场肿瘤感应热疗能避免传统加温治疗缺陷,有效控制加热区温度,其关键是研发感应加热临床设备。本文根据肿瘤感应热疗要求,针对设备的中频电源关键技术,先对电源总体进行研究设计;再分析磁流体材料在交变磁场中的发热机理, 推出肿瘤热疗温度和相应磁场强度 Hg 的关系,并得出常态所需 Hg 值;然后对特殊磁路分析,建立起磁路和电路的联系,得出热疗所需电流值;最后为解决中频100 KHz 时的漏磁、发热、谐振不稳定等问题,对磁路和电路进行了系列优化设计。实际证明该研究可大大提高加热效率、减少磁体发热,为临床设备的研制奠定了良好基础。更多还原

【Abstract】 AC magnetic field tumor hyperthermia heat cures can avoid the defect of traditional heat cures and control the heating zone temperature effectively.Exploiting induction heating clinical equipment is most important.According to the request of tumor hyperthermia and the key technique of intermediate frequency power,the hole part of the device is designed.It also analyses this material’s calorific principle in the AC magnetic field,deduces the relation between T(tumor hyperthermia temperature)and Hg(magnetic field strength),and calculates the value of Hg.Then,through studying the special magnetic circuit,the connec- tion between magnetic circuit and circuit is set up,and it also calculates the required value of electric cur- rent.Finally,in order to solve some problems at 100 KHz,such as brow leakage、calorification、current res- onance labilization etc,a series of optimization designs in magnetic circuit and circuit are made.Reality has testified that those methods can improve warm-up efficiency greatly and induce heat in magnetic body. Those studies have lain a good foundation of development for clinical equipment.更多还原