Shielded treatment room and device suitable for recording images on the basis of magnetic resonance
    1.
    发明申请
    Shielded treatment room and device suitable for recording images on the basis of magnetic resonance 失效
    屏蔽治疗室和适合于在磁共振基础上记录图像的装置

    公开(公告)号:US20070170918A1

    公开(公告)日:2007-07-26

    申请号:US10595474

    申请日:2004-10-22

    IPC分类号: G01V3/00

    摘要: The invention relates to a treatment room (7) suitable for recording images of a human or animal body on the basis of a magnetic resonance (MR) imaging technique, the walls (7a), the ceiling (7b) and the floor (7c) of the treatment room forming an electromagnetic shield for a magnetic resonance (MR) imaging system (1) arranged in the treatment room, which MR imaging system comprises at least a target area (5) in which a human or animal body can be placed, a housing (2, 3, 4) comprising at least one main magnetic unit and at least one gradient magnetic unit for generating one or more magnetic fields in the target area (5), and at least one radio-frequency (RF) pulse unit (6) for generating an electromagnetic RF pulse in the target area (5). The invention further relates to a magnetic resonance imaging system comprising a target area in which a human or animal body can be placed, a housing comprising at least one main magnetic unit and at least one gradient magnetic unit for generating one or more magnetic fields in the target area, and at least one radio-frequency (RF) pulse unit for generating an electromagnetic RF pulse in the target area. In accordance with the invention, means (10, 11, 12, 13, 14, 15, 16, 17) are present which, in operation, counteract the electromagnetic effects (8) of the RF pulse in the treatment room (7) outside the target area (5).

    摘要翻译: 本发明涉及一种适用于基于磁共振(MR)成像技术,壁(7a),天花板(7b)和地板(MR)成像技术记录人体或动物体的图像的治疗室(7) 形成用于设置在治疗室中的磁共振(MR)成像系统(1)的电磁屏蔽的处理室,其中该MR成像系统至少包括目标区域(5),人体或动物体可以在其中 放置,包括至少一个主磁单元和用于在目标区域(5)中产生一个或多个磁场)和至少一个射频(RF)的至少一个梯度磁单元的壳体(2,3,4) )脉冲单元(6),用于在目标区域(5)中产生电磁RF脉冲。 本发明还涉及一种磁共振成像系统,其包括其中可以放置人或动物体的目标区域,包括至少一个主磁单元和至少一个梯度磁单元的壳体,用于在该区域中产生一个或多个磁场 目标区域和用于在目标区域中产生电磁RF脉冲的至少一个射频(RF)脉冲单元。 根据本发明,存在装置(10,11,12,13,14,15,16,17),其在操作中抵消外部处理室(7)中的RF脉冲的电磁效应(8) 目标区域(5)。

    Magnetic resonance imaging scanner with molded fixed shims
    2.
    发明申请
    Magnetic resonance imaging scanner with molded fixed shims 有权
    具有模制固定垫片的磁共振成像扫描仪

    公开(公告)号:US20070030004A1

    公开(公告)日:2007-02-08

    申请号:US10558768

    申请日:2004-05-19

    IPC分类号: G01V3/00

    CPC分类号: G01R33/3873

    摘要: A magnetic resonance imaging scanner includes a generally cylindrical main magnet assembly (10) that defines a cylinder axis (16). A first set of shims (60) are rigidly positioned inside the magnet assembly (10) at about a first distance (d1) relative to the cylinder axis (16). A second set of shims (62) are rigidly positioned inside the main magnet assembly (10) at about a second distance (d2) relative to the cylinder axis (16). The second distance (d2) is different from the first distance (d1). A generally cylindrical radio frequency coil (26) is arranged inside the main magnet assembly (10) at about a third distance (d3) relative to the cylinder axis (16). A plurality of gradient coils (20) are arranged inside the main magnet assembly (10) at about a fourth distance (d4) relative to the cylinder axis (16).

    摘要翻译: 磁共振成像扫描仪包括限定气缸轴线(16)的大致圆柱形的主磁体组件(10)。 第一组垫片(60)相对于气缸轴线(16)以大约第一距离(d 1)刚性地定位在磁体组件(10)的内部。 第二组垫片(62)相对于气缸轴线(16)以大约第二距离(d 2)刚性地定位在主磁体组件(10)的内部。 第二距离(d 2)与第一距离(d 1)不同。 大致圆柱形的射频线圈(26)相对于气缸轴线(16)以大约第三距离(d 3)布置在主磁体组件(10)的内部。 多个梯度线圈(20)相对于气缸轴线(16)以大约第四距离(d 4)布置在主磁体组件(10)的内部。

    Cooling of a mri system
    3.
    发明申请
    Cooling of a mri system 有权
    制冷系统

    公开(公告)号:US20050104700A1

    公开(公告)日:2005-05-19

    申请号:US10498728

    申请日:2002-12-18

    申请人: Gerardus Mulder

    发明人: Gerardus Mulder

    摘要: The invention relates to a magnetic resonance imaging (MRI) system having an open superconducting magnet system (1), which comprises a number of horizontally oriented superconducting coils (3-10) and a cryogenic container (11) for containing a liquid cooling medium for cooling the superconducting coils which are located within the cryogenic container. At its top, the cryogenic container is provided with a recondensor (23) for continuously liquefying the cooling medium. The magnet system has a circuit for guiding the liquid cooling medium from the recondensor along at least part of the superconducting coils.

    摘要翻译: 本发明涉及具有开放超导磁体系统(1)的磁共振成像(MRI)系统,其包括多个水平取向的超导线圈(3-10)和低温容器(11),用于容纳液体冷却介质,用于 冷却位于低温容器内的超导线圈。 在其顶部,低温容器设置有用于连续液化冷却介质的再冷凝器(23)。 磁体系统具有用于沿着至少部分超导线圈从再冷凝器引导液体冷却介质的电路。