Actively-shielded ultrahigh field MRI/NMR superconducting magnet design

Active shielding technology has been widely applied to the superconducting magnetic resonance imaging (MRI) and nuclear magnetic resonance (NMR) magnets design, revealing excellent performance on the stray field control. For such a highly homogeneous field superconducting magnet design, an appropria...

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Bibliographic Details
Published in:Superconductor science & technology 2022-01, Vol.35 (1), p.14001
Main Authors: Wang, Yaohui, Wang, Qiuliang, Wang, Hui, Chen, Shunzhong, Hu, Xinning, Liu, Yang, Liu, Feng
Format: Article
Language:English
Subjects:
active shielding
MRI
NMR
superconducting magnet
ultrahigh field
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Summary:Active shielding technology has been widely applied to the superconducting magnetic resonance imaging (MRI) and nuclear magnetic resonance (NMR) magnets design, revealing excellent performance on the stray field control. For such a highly homogeneous field superconducting magnet design, an appropriate optimization strategy is essential to guarantee the magnetic field homogeneity in the central region and the expected 5 Gauss line range, especially for the ultrahigh field superconducting magnet. Based on the compensating field optimization method, an actively-shielded whole-body 14 T MRI magnet and an actively-shielded 1.3 GHz NMR magnet were presented, and detailed analyses were conducted to evaluate the feasibility of the designs. The developed magnet design method, coil pattern, wire arrangement, and stress/strain adjustment will be used to guide the corresponding project implementation.
ISSN:0953-2048
1361-6668
DOI:10.1088/1361-6668/ac370e