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    NUCLEAR MAGNETIC RESONANCE DIAGNOSING DEVICE AND DIAGNOSING SYSTEM
    1.
    发明公开
    NUCLEAR MAGNETIC RESONANCE DIAGNOSING DEVICE AND DIAGNOSING SYSTEM 有权
    核磁共振诊断设备和诊断系统

    公开(公告)号：EP1400202A4

    公开(公告)日：2006-10-18

    申请号：EP02733503

    申请日：2002-06-17

    申请人： HITACHI MEDICAL CORP

    发明人： KAMIMURA SEIJI ,  FUKAMI RYOSUKE ,  TAKEKOSHI ISAMU ,  IWASAKI MASAKATSU ,  YOSHINO HITOSHI ,  MAEDA TSUNEO

    IPC分类号： G01R33/28 ,  A61B5/055 ,  G01R33/38 ,  A61B6/03 ,  G01R33/48

    CPC分类号： G01R33/3806 ,  A61B5/055 ,  A61B5/0555

    摘要： A nuclear magnetic resonance diagnosing device capable of increasing an accessibility of a doctor to a subject by forming a continuous large open space area around an examination table and continuously providing the tomograph of the subject in a space formed between a pair of magnets, comprising the circular examination table (11), the pair of magnets (4) and (5) disposed on the upper and lower sides of the examination table, a column (6) holding at least the magnet disposed on the upper side of the pair of magnets, support devices such as a slide top plate (43) sliding on the examination table (11), a slide top plate supporting means (45) supporting the slide top plate thereon and disposed radially along the periphery of the examination table, and a bed (3) having a slide driving device, wherein the column (6) is so formed that widths (1) of a bridge (34) installed between the column (6) and the examination table and the examination table (11) are made smaller than an examination width (such as the diameter of the examination table) (L) determined by an orthogonal (R') passing through the center of the examination table to a centerline (R) between a gantry (2) and an examination table body (10).

    MAGNET DEVICE AND MAGNETIC RESONANCE IMAGING APPARATUS COMPRISING IT
    3.
    发明公开
    MAGNET DEVICE AND MAGNETIC RESONANCE IMAGING APPARATUS COMPRISING IT 有权
    MEGNETVORRICHTUNG松下MAGNETRESONANZTOMOGRAPH MIT DIESER VORRICHTUNG

    公开(公告)号：EP1314393A4

    公开(公告)日：2006-04-05

    申请号：EP01958505

    申请日：2001-08-27

    申请人： HITACHI MEDICAL CORP

    发明人： YOSHINO HITOSHI ,  GOLDIE FRED

    IPC分类号： A61B5/055 ,  G01R33/38 ,  G01R33/3815 ,  G01R33/565 ,  G01V3/00

    CPC分类号： G01R33/3815 ,  G01R33/3806 ,  G01R33/56518

    摘要： In a superconducting magnet device comprising upper and lower vacuum chamber coupled through a coupling pipe, the upper and lower chambers (9) and the coupling pipe (24) are made of a high electric resistance material, and the magnetic flux of a gradient magnetic field coil reaches a pair of upper and lower second heat shields (8) and a coupling pipe (23) coupling the upper and lower second heat shields (8). The coupling pipe (23) coupling the upper and lower second heat shields (8) is provided with a slit (cut) (41) extending in the vertical direction so that no eddy current flows, thus reducing asymmetry of eddy current generated in the coupling pipe (23). The artifact caused by asymmetric eddy current is thereby reduced in an MRI apparatus comprising such a magnet device.

    摘要翻译： 在包括通过耦合导管连接的上，下真空容器的超导磁体装置中，上和下真空容器9和耦合它们的耦合导管24由高电阻材料制成，使得梯度磁场线圈的磁通量 到达上下一对第二隔热罩8和连接一对第二隔热罩8的联接导管23.联接上下一对第二隔热罩8的连接导管23设有狭缝（切口 ）41在垂直方向上延伸，使得不会产生涡流，从而减小了在联接管道23中不对称地产生的涡流。 通过使用这种磁体装置的MRI装置可以减少由不对称涡流引起的人造物。