利索-全球专利检索

  1. 登录
  2. 注册

搜索结果

4 条记录 (耗时 0.022 秒)

    Vibration reduction system for magnetic-resonance imaging apparatus
    1.
    发明授权
    Vibration reduction system for magnetic-resonance imaging apparatus 失效
    用于磁共振成像装置的减振系统

    公开(公告)号：US5309105A

    公开(公告)日：1994-05-03

    申请号：US910543

    申请日：1992-07-08

    申请人： Taichi Sato ,  Yoshiharu Mohri ,  Kihachiro Tanaka ,  Takao Hommei ,  Masayuki Otsuka ,  Masashi Wada

    发明人： Taichi Sato ,  Yoshiharu Mohri ,  Kihachiro Tanaka ,  Takao Hommei ,  Masayuki Otsuka ,  Masashi Wada

    IPC分类号： A61B5/055 ,  G01R33/20 ,  G01R33/28 ,  G01R33/385 ,  H01F5/00

    CPC分类号： G01R33/3854

    摘要： A magnetic-resonance imaging apparatus has superconducting magnets for generating a large uniform magnetic field within a predetermined volume. Within that volume, coils for generating magnetic field gradients are supported on a bobbin, enabling an object within the bobbin to be investigated. The coils on the bobbin are subject to forces but are rigidly connected to the bobbin. Therefore, energy is transmitted to the bobbin which can cause the bobbin to vibrate and so generate noise. To dissipate that energy, the coils are attached to tubes, or other hollow members, on the bobbin, which tubes or hollow members contain movable bodies such as particulate material. The energy due to the forces on the coils cause the movable bodies to move and collide, so dissipating the energy and reducing the noise.

    摘要翻译： 磁共振成像装置具有用于在预定体积内产生大的均匀磁场的超导磁体。 在该体积内，用于产生磁场梯度的线圈被支撑在线轴上，使得能够调查线轴内的物体。 线轴上的线圈受力，但刚性地连接到线轴。 因此，能量被传递到筒管，这可能导致筒管振动并产生噪声。 为了消散能量，线圈被连接到线轴上的管或其它中空构件，这些管或中空构件包含诸如颗粒材料的可移动体。 由于线圈上的力引起的能量导致移动体移动和碰撞，从而耗散能量并降低噪音。

    Superconducting magnetic apparatus
    3.
    发明授权
    Superconducting magnetic apparatus 失效
    超导磁性设备

    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。

    Superconducting magnetic device
    4.
    发明授权
    Superconducting magnetic device 失效
    超导磁性装置

    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。