一种核磁共振成像中微量注射泵防磁屏蔽箱的设计

Designs of Antimagnetic Shield Box to Use Micro Injection Pump in Magnetic Resonance Image Formation

目的:设计一种在MRI强磁场环境中能使用微量注射泵的防磁屏蔽箱。方法:利用电磁屏蔽机制,采用非铁磁性材料加工成长方体箱子,其大小适合,正好能放进一台常规微量注射泵,对操作孔、输注连接管出孔、门边缝加装防护措施,使其对磁场具有很好的防磁、隔离作用。结果:该装置避免了MRI磁场对常规微量注射泵的磁化作用,使其在MRI环境中正常使用并对MRI图像质量无任何影响。结论:该防磁屏蔽箱有效解决了MRI环境下人工给药不精准的难题,扩大了常规微量注射泵的使用范围;而且提高了MRI强磁场环境中输注给药的工作效率,节约了大量的人力和医疗资源。

Objective To design one kind of antimagnetic shield box which is able to use the micro injection pump＇s in the MRI strong magnetic field environment.Methods With electromagnetic screen mechanism,the non-ferromagnetic material was used to process the cuboid box,whose size was proper to contain a conventional micro injection pump.Protective measures were taken to the operation hole,infusion connecting pipe and the seam beside the door,thus enabling it to be antimagnetic and isolated.Results This method avoided the conventional MRI magnetic field on the magnetization of the role of micro-injection pump,and the MRI image quality were not affected.Conclusion In the MRI environment,this antimagnetic shield box can cause the conventional micro injection pump to use normally under the effective addressing MRI environment,which solve the problem of inaccurate medicine given by manpower.It also expands the use scope of conventional micro injection pump,and enhances the working efficiency as well as saves the massive manpower and the medical resources.