An Optimized Design Approach for 14 T Actively Shielded MRI Magnets

doi:10.1109/TASC.2020.2966425

HFCAS OpenIR

	An Optimized Design Approach for 14 T Actively Shielded MRI Magnets
	Wu, Kaihong 1,2; Wu, Junrong 1,2; Wu, Yu1 ; Shi, Yi1 ; Xu, Aihua 1,3; Hao, Qiangwang1 ; Dai, Chao 1; Ma, Yuanyuan1 ; Zhang, Yongliang 1,2; Hussain, M. T.1,2
	2020-06-01
发表期刊	IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY
ISSN	1051-8223
通讯作者	Xu, Aihua(xuah@ipp.ac.cn)
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.
关键词	Magnet resonance imaging (MRI) magnet design linear programming non-linear programming spherical harmonics elimination
DOI	10.1109/TASC.2020.2966425
收录类别	SCI
语种	英语
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]
项目资助者	Strategic Priority Research Program (Type-B) of Chinese Academy of Science (CAS) ; Natural Science Foundation of the Jiangsu Higher Education Institutions of China
WOS研究方向	Engineering ; Physics
WOS类目	Engineering, Electrical & Electronic ; Physics, Applied
WOS记录号	WOS:000618992200001
出版者	IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
引用统计	被引频次：9[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.hfcas.ac.cn:8080/handle/334002/119609
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
第一作者单位	中科院等离子体物理研究所
通讯作者单位	中科院等离子体物理研究所
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).