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1.5 T 关节超导核磁共振成像主磁体 电磁机械特性分析
张红洁1王春忠2刘建东1刘建华3
0
(1. 北京石油化工学院,北京 102617; 2. 华润万东医疗装备股份有限公司,北京 100015; 3. 中国科学院电工研究所,应用超导重点实验室,北京 100190)
摘要:
本文设计了用于关节成像的1.5 T超导核磁共振成像(MRI)主磁体的电磁结构与机械支撑结构。首先计算了主磁体成像区域及磁体周围的电磁场分布。在此基础上,采用电磁-结构耦合方法计算了主磁体与支撑结构中的应力、应变分布情况。同时分析了不同的支撑材料对磁体应力/应变的影响。给出了1.5 T 超导MRI主磁体支撑结构的设计标准。
关键词:  超导MRI  电磁机械特性  关节成像
DOI:
基金项目:北京市教育委员会科技计划(批准号: KM201310017005)、北京市优秀人才培养资助项目(批准号:2012D005005000006)、北京市高等学校青年英才计划项目(批准号: YETP1483)资助的课题.
Analysis of Electromagnetic and Mechanical Properties of Main Magnet of 1.5 T Joint Superconducting Magnetic Resonance Imaging
Hongjie ZHANG1 Chunzhong WANG2 Jiandong LIU
(1. Beijing Institute of Petrochemical Technology, Beijing 102617, China 2. China resources Wan Dong medical equipment co., LTD, Beijing 100015, China 3. Key Laboratory of Applied Superconductivity, Institute of Electrical Engineering, Chinese Academy of Science, Beijing 100190, China)
Abstract:
The electromagnetic structure and mechanical support structure of the main magnet of 1.5T joint superconducting magnetic resonance imaging are designed. The electromagnetic field in the imaging region and around the magnet is calculated. On the basis, with the electromagnetic-structural coupling method, the stress, and strain of the main magnet and support structure are calculated. Meanwhile, the different support materials for the effects of the stress, strain are analyzed. As a result, the design criterion of the support structure of the main magnet is given.
Key words:  superconducting MRI  electromagnetic-mechanical property  joint imaging

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