公开(公告)号：US06856223B1

公开(公告)日：2005-02-15

申请号：US10070998

申请日：2000-09-13

申请人： Hirotaka Takeshima ,  Takao Honmei ,  Hiroshi Tazaki ,  Kazuki Moritsu ,  Shigenori Kuroda ,  Hajime Tanabe

发明人： Hirotaka Takeshima ,  Takao Honmei ,  Hiroshi Tazaki ,  Kazuki Moritsu ,  Shigenori Kuroda ,  Hajime Tanabe

IPC分类号： A61B5/055 ,  G01R33/38 ,  G01R33/3815 ,  G01R33/3873 ,  G01R33/3875 ,  H01F6/00 ,  G01V3/00

CPC分类号： G01R33/3873 ,  G01R33/3806

摘要： An open-type magnet device for MRI includes a pair of upper and lower magnet assemblies, and shims are provided on opposite sides of their cooling containers and/or in holes passing through central portions of the cooling containers so as to facilitate providing a highly homogeneous static magnetic field.

摘要翻译： 用于MRI的开放型磁铁装置包括一对上下磁体组件，并且垫片设置在其冷却容器的相对侧和/或穿过冷却容器的中心部分的孔中，以便于提供高度均匀的 静磁场。

公开(公告)号：US06781492B2

公开(公告)日：2004-08-24

申请号：US10191466

申请日：2002-07-10

申请人： Hirotaka Takeshima ,  Takao Hommei ,  Hajime Kawano ,  Hiroshi Tazaki ,  Takeshi Yatsuo ,  Shigenori Kuroda ,  Hajime Tanabe

发明人： Hirotaka Takeshima ,  Takao Hommei ,  Hajime Kawano ,  Hiroshi Tazaki ,  Takeshi Yatsuo ,  Shigenori Kuroda ,  Hajime Tanabe

IPC分类号： H01F600

CPC分类号： G01R33/3806 ,  G01R33/3815 ,  G01R33/383 ,  G01R33/3873

摘要： A superconducting magnet apparatus. By forming one or more holes in each of platelike ferromagnetic substances forming a magnetic shield for focusing the magnetic flux generated by superconducting coils, the flow of lines of magnetic flux is adjusted. Thereby, a static magnetic field in a measurement space is corrected. By disposing coupling tubes for supporting two cooling vessels housing superconducting coils on the rear side with respect to a central axis (Z axis) of the measurement space of the vertical direction, access to the subject is facilitated. In addition, the magnetic shield has an opening portion wider than the superconducting magnet on its side face. After the magnetic shield has been assembled, the superconducting magnet can be inserted from the opening portion.

摘要翻译： 超导磁体装置。 通过在形成用于聚焦超导线圈产生的磁通的磁屏蔽的板状铁磁性物质的每一个中形成一个或多个孔，调节磁通线的流动。 由此，校正测量空间中的静磁场。 通过设置用于支撑相对于垂直方向的测量空间的中心轴线（Z轴）在后侧容纳超导线圈的两个冷却容器的联接管，便于对对象的访问。 此外，磁屏蔽件的侧面具有比超导磁体宽的开口部。 在组装磁屏蔽之后，可以从开口部分插入超导磁体。

公开(公告)号：US06437672B1

公开(公告)日：2002-08-20

申请号：US09101048

申请日：1998-06-29

申请人： Hirotaka Takeshima ,  Takao Hommei ,  Hajime Kawano ,  Hiroshi Tazaki ,  Takeshi Yatsuo ,  Shigenori Kuroda ,  Hajime Tanabe

发明人： Hirotaka Takeshima ,  Takao Hommei ,  Hajime Kawano ,  Hiroshi Tazaki ,  Takeshi Yatsuo ,  Shigenori Kuroda ,  Hajime Tanabe

IPC分类号： H01F600

CPC分类号： G01R33/3806 ,  G01R33/3815 ,  G01R33/383 ,  G01R33/3873

摘要： A superconducting magnet apparatus. By forming one or more holes in each of platelike ferromagnetic substances forming a magnetic shield for focusing the magnetic flux generated by superconducting coils, the flow of lines of magnetic flux is adjusted. Thereby, a static magnetic field in a measurement space is corrected. By disposing coupling tubes for supporting two cooling vessels housing superconducting coils on the rear side with respect to a central axis (Z axis) of the measurement space of the vertical direction, access to the subject is facilitated. In addition, the magnetic shield has an opening portion wider than the superconducting magnet on its side face. After the magnetic shield has been assembled, the superconducting magnet can be inserted from the opening portion.

摘要翻译： 超导磁体装置。 通过在形成用于聚焦超导线圈产生的磁通的磁屏蔽的板状铁磁性物质的每一个中形成一个或多个孔，调节磁通线的流动。 由此，校正测量空间中的静磁场。 通过设置用于支撑相对于垂直方向的测量空间的中心轴线（Z轴）在后侧容纳超导线圈的两个冷却容器的联接管，便于对对象的访问。 此外，磁屏蔽件的侧面具有比超导磁体宽的开口部。 在组装磁屏蔽之后，可以从开口部分插入超导磁体。

公开(公告)号：US5939962A

公开(公告)日：1999-08-17

申请号：US906001

申请日：1997-08-04

申请人： Yasuyuki Tahara ,  Hajime Tanabe ,  Hirotaka Takeshima

发明人： Yasuyuki Tahara ,  Hajime Tanabe ,  Hirotaka Takeshima

IPC分类号： G01R33/38 ,  G01R33/381 ,  H01F5/08

CPC分类号： G01R33/381 ,  G01R33/3806

摘要： Annular portions are arranged on mutually confronting surfaces at circumferential edge portions of low-temperature containers, the annular portions forming annular containing portions whose cross section is rectangular. Not only a side coil among a group of coils forming a collective coil body is disposed inside the containing portion, but also a gradient magnetic field unit, a radio-frequency transmission coil, and a reception coil are disposed inside a recessed portion so as to be integrated with one another into a single body, the recessed portion being formed so as to be surrounded by the corresponding annular portion. The side coil supplies more than half a designed magnetomotive force. Since a distance J of the mutually confronting low-temperature containers, i.e., the distance between the mutually confronting surfaces of the side coils can be reduced by a distance corresponding to the projection of the projected portions, not only the designed magnetomotive force can be reduced, but also the apparatus can be downsized and inexpensive.

摘要翻译： 环状部分布置在低温容器的圆周边缘部分的相互面对的表面上，环形部分形成截面为矩形的环形容纳部分。 形成集体线圈体的一组线圈中的侧线圈不仅设置在容纳部内，而且还设置有倾斜磁场单元，射频发送线圈和接收线圈， 彼此一体地形成为一体，该凹部被形成为被相应的环形部分包围。 侧线圈提供超过一半设计的磁动力。 由于相互面对的低温容器的距离J，即侧面线圈的相互面对的面之间的距离可以减小与突出部分的突起相对应的距离，不仅可以减小设计的磁动势 ，而且该装置也可以小型化和便宜化。

公开(公告)号：US06847279B2

公开(公告)日：2005-01-25

申请号：US10652318

申请日：2003-09-02

申请人： Naoji Yoshida ,  Hajime Tanabe ,  Shigenori Kuroda

发明人： Naoji Yoshida ,  Hajime Tanabe ,  Shigenori Kuroda

IPC分类号： G01R33/3815 ,  G01R33/3873 ,  G01V3/00

CPC分类号： G01R33/3873 ,  G01R33/3815

摘要： A superconductive magnet device comprises a pair of oppositely disposed superconductive bodies in which annular superconductive coils are accommodated, and fine chip-shaped ferromagnetic shims disposed on a surface of the pair of superconductive magnet bodies so as to improve uniformity of magnetic field in a uniform magnetic field space generated in the proximity of the center between the superconductive magnet bodies, wherein ring-shaped ferromagnetic shims are disposed concentrically with the center of annular superconductive coils on the surface of the superconductive magnet bodies.

摘要翻译： 超导磁体装置包括一对相对设置的超导体，其中容纳有环形超导线圈，并且精细的片状铁磁垫片设置在该对超导磁体的表面上，以提高均匀磁场中的磁场的均匀性 在超导磁体之间的中心附近产生的场空间，其中环形铁磁垫片与超导磁体的表面上的环形超导线圈的中心同心地设置。

公开(公告)号：US06861933B1

公开(公告)日：2005-03-01

申请号：US10652319

申请日：2003-09-02

申请人： Naoji Yoshida ,  Hajime Tanabe ,  Shigenori Kuroda

发明人： Naoji Yoshida ,  Hajime Tanabe ,  Shigenori Kuroda

IPC分类号： G01R33/3815 ,  G01R33/3873 ,  G01V3/00

CPC分类号： G01R33/3873 ,  G01R33/3815

摘要： A superconductive magnet device comprises a pair of oppositely disposed superconductive bodies in which annular superconductive coils are accommodated, and fine chip-shaped ferromagnetic shims disposed on a surface of the pair of superconductive magnet bodies so as to improve uniformity of magnetic field in a uniform magnetic field in a uniform magnetic field space generated in the proximity of the center between the superconductive magnet bodies, wherein ring-shaped ferromagnetic shims are disposed concentrically with the center of annular superconductive coils on the surface of the superconductive magnet bodies.

摘要翻译： 超导磁体装置包括一对相对设置的超导体，其中容纳有环形超导线圈，并且精细的片状铁磁垫片设置在该对超导磁体的表面上，以提高均匀磁场中的磁场的均匀性 在超导磁体之间的中心附近产生的均匀磁场空间中的环状铁磁垫片与超导磁体的表面上的环形超导线圈的中心同心地设置。

公开(公告)号：US06707359B2

公开(公告)日：2004-03-16

申请号：US10120358

申请日：2002-04-12

申请人： Naoji Yoshida ,  Hajime Tanabe ,  Shigenori Kuroda

发明人： Naoji Yoshida ,  Hajime Tanabe ,  Shigenori Kuroda

IPC分类号： H01F600

CPC分类号： G01R33/3873 ,  G01R33/3815

摘要： A superconductive magnet device comprises a pair of oppositely disposed superconductive bodies in which annular superconductive coils are accommodated, and fine chip-shaped ferromagnetic shims disposed on a surface of the pair of superconductive magnet bodies so as to improve uniformity of magnetic field in a uniform magnetic field space generated in the proximity of the center between the superconductive magnet bodies, wherein ring-shaped ferromagnetic shims are disposed concentrically with the center of annular superconductive coils on the surface of the superconductive magnet bodies.

摘要翻译： 超导磁体装置包括一对相对设置的超导体，其中容纳有环形超导线圈，并且精细的片状铁磁垫片设置在该对超导磁体的表面上，以提高均匀磁场中的磁场的均匀性 在超导磁体之间的中心附近产生的场空间，其中环形铁磁垫片与超导磁体的表面上的环形超导线圈的中心同心地设置。

公开(公告)号：US09046587B2

公开(公告)日：2015-06-02

申请号：US14360495

申请日：2012-03-01

申请人： Hajime Tanabe

发明人： Hajime Tanabe

IPC分类号： G01R33/3873 ,  A61B5/055 ,  G01R33/3815

CPC分类号： G01R33/3873 ,  A61B5/055 ,  G01R33/3815

摘要： There are provided the steps of: measuring a magnetic field in a predetermined space; and performing shimming by arranging a plurality of ferromagnetic shims in a superconducting magnet. The step of shimming includes arranging the plurality of shims at positions that make the magnetic field homogeneous, based on a result of measurement in the step of measuring the magnetic field and that provide a predetermined value of an electromagnetic force caused by the magnetic field to act on the plurality of shims.

摘要翻译： 提供了以下步骤：测量预定空间中的磁场; 以及通过将多个铁磁垫片布置在超导磁体中来进行匀场。 垫片的步骤包括基于测量磁场的步骤中的测量结果将多个垫片布置在使得磁场均匀的位置处，并且提供由磁场引起的电磁力的预定值以起作用 在多个垫片上。

公开(公告)号：US08138867B2

公开(公告)日：2012-03-20

申请号：US12574937

申请日：2009-10-07

申请人： Hajime Tanabe

发明人： Hajime Tanabe

IPC分类号： H01F1/00

CPC分类号： G01R33/3815 ,  G01R33/288 ,  G01R33/389 ,  G01R33/421

摘要： A superconducting magnet device includes a main coil that generates a static magnetic field in an imaging space and a disturbance magnetic field compensation coil that suppresses influences of a variable magnetic field flowing inside from outside in the imaging space. The main coil is divided to at least two diode circuits. The disturbance magnetic field compensation coil has at least one coil formed of minus turns so that mutual inductances with the respective diode circuits in the main coil are made minimum.

摘要翻译： 超导磁体装置包括在成像空间中产生静磁场的主线圈和抑制在成像空间内从外部流入的可变磁场的影响的扰动磁场补偿线圈。 主线圈分为至少两个二极管电路。 干扰磁场补偿线圈具有由负匝形成的至少一个线圈，使得与主线圈中的各个二极管电路的互感最小。

公开(公告)号：US20100301977A1

公开(公告)日：2010-12-02

申请号：US12574937

申请日：2009-10-07

申请人： Hajime Tanabe

发明人： Hajime Tanabe

IPC分类号： H01F6/00

CPC分类号： G01R33/3815 ,  G01R33/288 ,  G01R33/389 ,  G01R33/421

摘要： A superconducting magnet device includes a main coil that generates a static magnetic field in an imaging space and a disturbance magnetic field compensation coil that suppresses influences of a variable magnetic field flowing inside from outside in the imaging space. The main coil is divided to at least two diode circuits. The disturbance magnetic field compensation coil has at least one coil formed of minus turns so that mutual inductances with the respective diode circuits in the main coil are made minimum.

摘要翻译： 超导磁体装置包括在成像空间中产生静磁场的主线圈和抑制在成像空间内从外部流入的可变磁场的影响的扰动磁场补偿线圈。 主线圈分为至少两个二极管电路。 干扰磁场补偿线圈具有由负匝形成的至少一个线圈，使得与主线圈中的各个二极管电路的互感最小。