NDLI: Open MRI Magnet With Iron Rings Correcting the Lorentz Force and Field Quality

Content Provider	IEEE Xplore Digital Library
Author	Qiuliang Wang Hui Wang Jie Zheng Yinming Dai Xuchen Zhu Qun He Junsheng Cheng Shunzhong Chen Shousen Song Baozhi Zhao Chunyan Cui Yi Li Housheng Wang Lankai Li Zhipeng Ni Zhongkui Feng Luguang Yan Jianyi Xu
Copyright Year	2002
Abstract	A magnetic resonance imaging (MRI) superconducting magnet with openness can reduce claustrophobia of a patient. To fabricate an open MRI magnet, a new magnet configuration with iron rings and pole plates balancing the force between the coil and the yoke, and correcting the field homogeneity has been proposed. An MRI magnet with the center field of 0.7 T generated by split-pair coils and yokes is fabricated. The coils are contained in the cryostat with separated vessels connected with two pipes. The coils are separated with a room temperature gap of 480 mm and the diameter spherical volume (DSV) of 300 mm in which the homogeneity is 3 ppm in peak-to-peak. The cryogenic system is cooled by one GM cryo-cooler to realize the zero boiling off liquid helium. In the paper, the detailed design, fabrication, and test will be reported.
Sponsorship	Council on Superconductivity Appl. Superconductivity Conference Inc MIT
Starting Page	1
Ending Page	5
Page Count	5
File Size	1036583
File Format	PDF
ISSN	10518223
Volume Number	24
Issue Number	3
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2014-01-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Magnetic resonance imaging Superconducting magnets Coils Magnetic fields Iron Helium Magnetic noise zero boiling off liquid helium Iron-rings balancing Lorentz force open magnetic resonance imaging (MRI) superconducting magnet
Content Type	Text
Resource Type	Article
Subject	Condensed Matter Physics Electronic, Optical and Magnetic Materials Electrical and Electronic Engineering

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