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医院MRI设备电气设计要点

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介绍医用磁共振成像设备(MRI)的工作原理和各主流MRI设备厂家的电气参数,分析电磁干扰对MRI设备的影响,总结变压器、电缆与磁体间距离的临界值;根据MRI设备磁体间射频屏蔽的要求,给出射频屏蔽电气设计时的注意事项;基于MRI设备对电能质量的要求,给出MRI设备电源内阻的计算方法,并编制相应的Excel计算软件;在此基础上,给出MRI设备配电设计的相关措施.
Key Points in Electrical Design for MRI Equipment in Hospitals
This paper introduces the working principles of medical magnetic resonance imaging(MRI)equipment and the electrical parameters of various mainstream MRI equipment manufacturers.It analyzes the impact of electromagnetic interference on MRI equipment and summarizes the critical values for the distance between transformers,cables,and magnets.Based on the requirements for radio frequency shielding between MRI equipment magnets,precautions for electrical design of radio frequency shielding are provided.Based on the power quality requirements of MRI equipment,a method for calculating the internal resistance of the power supply for MRI equipment is given,and corresponding Excel calculation software is developed.On this basis,relevant measures for the power distribution design of MRI equipment are presented.

MRI equipmentelectromagnetic interferencecritical valuemainframe capacitynonferromagnetic materialscontact resistancepower supply internal resistancepower supply measures

郑俊

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中国建筑西南设计研究院有限公司,成都市 610042

MRI设备 电磁干扰 临界值 主机容量 非铁磁性材料 接触电阻 电源内阻 供电措施

2024

建筑电气
中国建筑西南设计研究院 中国建筑学会建筑电气分会 全国建筑电气设计技术协作及情报交流网

建筑电气

影响因子:0.56
ISSN:1003-8493
年,卷(期):2024.43(12)