This paper is to study the object of mn - zn ferrite powder , which is an important non - metallic magnetic materials , because of their narrow hysteresis loop , high magnetic permeability and high resistivity , high curie temperature and the low loss characteristics are widely used in many electronic industrial fields 这种磁性微粒经局部注射或经动脉导管注入瘤体后，在交变磁场作用下吸收电磁波转化为热能使肿瘤区升温达所需的治疗温度( 41 46 ) ，以杀死肿瘤细胞，而不含磁微粒的正常组织不受损，正逐渐成为医学上肿瘤热疗技术的研究对象。
Internal bio - field tumor thermotherapy system : internal bio - field thermotherapy , in abbrevitation , uses two high frequency sources with different frequencies and phases to cross act human body . it is kind of therapeutic method which could heat the whole or locals with physical energy , without damages of normal tissue , while directly inducing apoptpsis of tumoe cells 内生场热疗系统是采用两组不同频率相位的高频源交叉作用于人体，利用物理能量加热全身或局部，既不损伤正常组织，又使肿瘤细胞凋亡的一种治疗方法。
" body gamma knife is mainly used for curing all kinds of body tumors , and the latest generation three - dimensional directional actinotherapy devices . it incorporates many modern high - techs and effectively break through the limit of actinotherapy devices available while precisely focused and three - dimensional directional . it also has adjusted actinotherapy , wide range irradiation and common actinotherapy , and protects the normal organism from damage at best while its dosage precisely destroys tumor organism “体部伽玛刀”主要用于治疗各种体部肿瘤，是目前世界上最新一代立体定向放疗设备，它吸收了众多现代高新技术成果，有效地突破了现有放射治疗设备的局限，兼备精确聚焦立体定位等优点，具有适形调强放疗大野照射及普通放疗等多种功能，能够在剂量准确摧毁肿瘤组织的同时，最大程度地保护正常组织免受损伤。
This paper develops a brain tumors heating curing instrument , which is based on the endogenetic field . it works by heating the ion and polity elements in the tumors organization , making the molecule twist and fracture . in that way , the temperature in the brain tumors is 3 ~ 7 c higher than the normal organization , and kills the brain tumor 本文研制了一种基于内生场的脑肿瘤射频热疗仪,通过内生场加温促使肿瘤组织的离子和极性分子在电磁场中发生分子扭动、摩擦,产生热滞留,使得肿瘤组织的温度高于周围正常组织的3 ~ 7 ,从而烧死脑肿瘤细胞,达到安全治愈肿瘤的目的。
Today , the main methods used in curing tumor are surgery , actinotheraphy , chemotherapy and so on . surgery is easy in casing malignant cells transfer , and it is impossible to operate in some place of the body , it can also bring great harm to person ' s body . actinotheraphy use radiation to treat tumor , at the same time of killing malignant cells , it will also kill the general cells 当今使用的方法主要有手术、放疗和化疗等，手术的方法容易造成癌细胞转移，并且人体的有些部位不能进行手术，也会给病人生理带来痛苦；放疗采用放射线治疗肿瘤，在杀死癌细胞的同时，也会杀死正常组织细胞；化疗采用化学药物治疗肿瘤，也会给人体正常细胞带来损伤。
These conventional approaches cannot be selectively targeted to the tumor cells and completely eradicate them , this may account for the development of recurrence and metastasis of gastric cancer due to the existence of residual tumor cells ; in addition , as to some kinds of conventional approaches , such as chemical therapy , their tumoricidal effects also could cause damage to some other normal tissues / cells and undermine the function of immune system in patients with gastric cancer 目前，临床上的?些常规方法，包括外科手术的、化学的及物理的治疗手段，对绝大多数中晚期胃癌的疗效均不理想。其原因在于这些常规方法对癌细胞缺乏选择性，并不能特异性地杀伤癌细胞，势必造成残存癌细胞引起的肿瘤复发和转移。某些常规方法，如化疗，在杀伤癌细胞的同时，也会造成机体正常组织的损伤并削弱机体的免疫机能。
