公开(公告)号：US20140121114A1

公开(公告)日：2014-05-01

申请号：US14125003

申请日：2011-12-14

Applicant: Qiuliang Wang ,  Xinning Hu ,  Chunzhong Wang ,  Hui Wang ,  Luguang Yan ,  Yinming Dai ,  Baozhi Zhao ,  Jianhua Wang ,  Jianyi xu

Inventor： Qiuliang Wang ,  Xinning Hu ,  Chunzhong Wang ,  Hui Wang ,  Luguang Yan ,  Yinming Dai ,  Baozhi Zhao ,  Jianhua Wang ,  Jianyi xu

IPC: G01R33/34

CPC classification number: G01R33/34023 ,  G01R33/3806 ,  G01R33/3815 ,  G01R33/421 ,  H01F6/06

Abstract: A self-shield open magnetic resonance imaging superconducting magnet comprises five pairs of coils: shim coils, first main magnetic coils, second main magnetic coils, third main magnetic coils, and shielding coils. The five pairs of coils are symmetric about the center. The shim coils are arranged closest to the center point; the first main magnetic coils, the second main magnetic coils, the third main magnetic coils, and the shielding coils are arranged in sequence outside. The first main magnetic coils are connected with reverse current. The second and third main magnetic coils are connected with positive current for providing the main magnetic field strength. The shim coils are connected with positive current for compensating the magnetic field in the central region. The shielding coils are connected with reverse current for creating a magnetic field opposite to the main magnetic field for compensating the stray magnetic field in the space.

Abstract translation: 自屏蔽开放磁共振成像超导磁体包括五对线圈：垫片线圈，第一主磁线圈，第二主磁线圈，第三主磁线圈和屏蔽线圈。 五对线圈对称关于中心。 垫片线圈最靠近中心点布置; 第一主磁线圈，第二主磁线圈，第三主磁线圈和屏蔽线圈依次布置在外部。 第一主电磁线圈与反向电流相连。 第二和第三主磁线圈与正电流相连以提供主磁场强度。 垫片线圈与正电流连接，用于补偿中心区域的磁场。 屏蔽线圈与反向电流连接，以产生与主磁场相反的磁场，用于补偿空间中的杂散磁场。

公开(公告)号：US08996083B2

公开(公告)日：2015-03-31

申请号：US14125003

申请日：2011-12-14

Applicant: Qiuliang Wang ,  Xinning Hu ,  Chunzhong Wang ,  Hui Wang ,  Luguang Yan ,  Yinming Dai ,  Baozhi Zhao ,  Jianhua Wang ,  Jianyi Xu

Inventor： Qiuliang Wang ,  Xinning Hu ,  Chunzhong Wang ,  Hui Wang ,  Luguang Yan ,  Yinming Dai ,  Baozhi Zhao ,  Jianhua Wang ,  Jianyi Xu

IPC: G01R33/035 ,  G01R33/34 ,  G01R33/38 ,  G01R33/3815 ,  H01F6/06 ,  G01R33/421

CPC classification number: G01R33/34023 ,  G01R33/3806 ,  G01R33/3815 ,  G01R33/421 ,  H01F6/06

Abstract: A self-shield open magnetic resonance imaging superconducting magnet comprises five pairs of coils: shim coils, first main magnetic coils, second main magnetic coils, third main magnetic coils, and shielding coils. The five pairs of coils are symmetric about the center. The shim coils are arranged closest to the center point; the first main magnetic coils, the second main magnetic coils, the third main magnetic coils, and the shielding coils are arranged in sequence outside. The first main magnetic coils are connected with reverse current. The second and third main magnetic coils are connected with positive current for providing the main magnetic field strength. The shim coils are connected with positive current for compensating the magnetic field in the central region. The shielding coils are connected with reverse current for creating a magnetic field opposite to the main magnetic field for compensating the stray magnetic field in the space.

Abstract translation: 自屏蔽开放磁共振成像超导磁体包括五对线圈：垫片线圈，第一主磁线圈，第二主磁线圈，第三主磁线圈和屏蔽线圈。 五对线圈对称关于中心。 垫片线圈最靠近中心点布置; 第一主磁线圈，第二主磁线圈，第三主磁线圈和屏蔽线圈依次布置在外部。 第一主电磁线圈与反向电流相连。 第二和第三主磁线圈与正电流相连以提供主磁场强度。 垫片线圈与正电流连接，用于补偿中心区域的磁场。 屏蔽线圈与反向电流连接，以产生与主磁场相反的磁场，用于补偿空间中的杂散磁场。

公开(公告)号：US09588198B2

公开(公告)日：2017-03-07

申请号：US14127887

申请日：2011-12-14

Applicant: Qiuliang Wang ,  Hui Wang ,  Xinning Hu ,  Yinming Dai ,  Luguang Yan ,  Jianyi Xu ,  Housheng Wang ,  Jianhua Wang

Inventor： Qiuliang Wang ,  Hui Wang ,  Xinning Hu ,  Yinming Dai ,  Luguang Yan ,  Jianyi Xu ,  Housheng Wang ,  Jianhua Wang

IPC: G01R33/3815 ,  G01R33/3875 ,  G01R33/421 ,  G01R33/38 ,  G01R33/34

CPC classification number: G01R33/34023 ,  G01R33/3806 ,  G01R33/3815 ,  G01R33/3875 ,  G01R33/421

Abstract: An open type nuclear magnetic resonance magnet system having an iron ring member. A superconducting coil and a superconducting switch form a closed-loop current circuit to generate a magnetic field. The generated magnetic field gains a magnetic flux circuit and executes magnetic field shielding through upper and lower iron yokes and a lateral iron yoke. The magnet system generates a desired magnetic field in a magnet imaging central area via the superconducting coil. To balance the extremely high electromagnetic force between the superconducting coil and the upper and lower iron yokes, an annular iron ring is mounted in a space defined by an inner perimeter wall of in a cryogenic container. The magnetic field distribution between the superconducting coil and the upper and lower iron yokes is changed via the iron ring, so that the electromagnetic interaction force therebetween is reduced.

Abstract translation: 一种具有铁环构件的开式核磁共振磁体系统。 超导线圈和超导开关形成闭环电流电路以产生磁场。 所产生的磁场获得磁通电路，并通过上下铁轭和一个侧铁轭进行磁场屏蔽。 磁体系统通过超导线圈在磁体成像中心区域产生期望的磁场。 为了平衡超导线圈和上下铁轭之间的极高电磁力，环形铁环安装在由低温容器内的内周壁限定的空间中。 超导线圈与上下铁心之间的磁场分布通过铁环变化，从而减小了它们之间的电磁相互作用力。