An Optimized Design Approach for 14 T Actively Shielded MRI Magnets
文献类型：期刊论文
| 作者 | Wu, Kaihong1,2; Wu, Junrong1,2; Wu, Yu1 ; Shi, Yi1; Xu, Aihua1,3; Hao, Qiangwang1; Dai, Chao1; Ma, Yuanyuan1; Zhang, Yongliang1,2; Hussain, M. T.1,2
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| 刊名 | IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY
 |
| 出版日期 | 2020-06-01 |
| 卷号 | 30 |
| 关键词 | Magnet resonance imaging (MRI) magnet design linear programming non-linear programming spherical harmonics elimination |
| ISSN号 | 1051-8223 |
| DOI | 10.1109/TASC.2020.2966425 |
| 通讯作者 | Xu, Aihua(xuah@ipp.ac.cn) |
| 英文摘要 | In this paper, an optimized method to design superconducting magnets for 14T actively shielded MRI is proposed. At first, the feasible current-carrying region assumed as possible coil zone is subdivided into two-dimensional array grids, in which each grid represents one loop of a current-carrying conductor. Then the current distribution is obtained using linear programming by a detailed consideration of the superconductor consumption, central field strength, imaging region homogeneity and stray field leakage range. Afterwards the rectangular section of the magnet is obtained by reshaping the irregular current region and the method of non-linear programming is then adopted to refine each section's position and size to obtain the final magnet configurations. In addition, the spherical harmonics elimination for the central magnetic field is proposed as the optimization strategy used in the non-linear programming method to get the least level of inhomogeneity over the imaging region and all the current centers are chosen based on the locations of actual superconducting wires of each conductor. Finally this combined design method has obtained high field homogeneity in the central zone by four sets of coils with a total length around 3.5 m and inner diameter nearly 1 m. The detailed analysis and optimization approach will be presented. |
| 资助项目 | Strategic Priority Research Program (Type-B) of Chinese Academy of Science (CAS)[XDB25000000] ; Natural Science Foundation of the Jiangsu Higher Education Institutions of China[19KJB470011] |
| WOS研究方向 | Engineering ; Physics |
| 语种 | 英语 |
| WOS记录号 | WOS:000618992200001 |
| 出版者 | IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC |
| 资助机构 | Strategic Priority Research Program (Type-B) of Chinese Academy of Science (CAS) ; Natural Science Foundation of the Jiangsu Higher Education Institutions of China |
| 源URL | [http://ir.hfcas.ac.cn:8080/handle/334002/119608]  |
| 专题 | 中国科学院合肥物质科学研究院 |
| 通讯作者 | Xu, Aihua |
| 作者单位 | 1.Chinese Acad Sci, Inst Plasma Phys, Hefei 230031, Peoples R China 2.Univ Sci & Technol China, Hefei 230026, Peoples R China 3.Changzhou Vocat Inst Mechatron Technol, Changzhou 213164, Peoples R China |
| 推荐引用方式 GB/T 7714 | Wu, Kaihong,Wu, Junrong,Wu, Yu,et al. An Optimized Design Approach for 14 T Actively Shielded MRI Magnets[J]. IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY,2020,30. |
| APA | Wu, Kaihong.,Wu, Junrong.,Wu, Yu.,Shi, Yi.,Xu, Aihua.,...&Hussain, M. T..(2020).An Optimized Design Approach for 14 T Actively Shielded MRI Magnets.IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY,30. |
| MLA | Wu, Kaihong,et al."An Optimized Design Approach for 14 T Actively Shielded MRI Magnets".IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY 30(2020). |
入库方式： OAI收割
来源：合肥物质科学研究院
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