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    Magnet assembly for magnetic resonance imaging system
    23.
    发明授权
    Magnet assembly for magnetic resonance imaging system 有权
    用于磁共振成像系统的磁铁组件

    公开(公告)号：US07498814B1

    公开(公告)日：2009-03-03

    申请号：US11930953

    申请日：2007-10-31

    申请人： Xianrui Huang ,  Minfeng Xu ,  Evangelos Trifon Laskaris ,  Paul St. Mark Shadforth Thompson ,  Bulent Aksel ,  Kathleen Melanie Amm ,  Anbo Wu ,  Yan Zhao

    发明人： Xianrui Huang ,  Minfeng Xu ,  Evangelos Trifon Laskaris ,  Paul St. Mark Shadforth Thompson ,  Bulent Aksel ,  Kathleen Melanie Amm ,  Anbo Wu ,  Yan Zhao

    IPC分类号： G01V3/00

    CPC分类号： G01R33/3815

    摘要： A magnet assembly for a Magnetic Resonance Imaging (MRI) system includes a vacuum vessel including an inner cylinder, an outer cylinder and a pair of tapered flanges connecting the inner and outer cylinders. The inner cylinder is made of a composite material. The outer cylinder and flanges are composed of several magnetic segments that provide a magnetic flux return path with low eddy currents. The segments are bonded together and electrically insulated from each other. A container, a thermal shield and a superconducting magnet coil assembly are disposed within the vacuum vessel. The superconducting magnet coil assembly includes a non-conductive cylindrical structure and superconducting coils. A thermally conductive cable is wrapped around the cylindrical structure and coils to form a thermally conductive envelope.

    摘要翻译： 用于磁共振成像（MRI）系统的磁体组件包括真空容器，其包括内筒，外筒和连接内筒和外筒的一对锥形凸缘。 内筒由复合材料制成。 外筒和法兰由几个磁段组成，提供具有低涡流的磁通返回路径。 这些段彼此结合在一起并且电绝缘。 容器，热屏蔽和超导磁体线圈组件设置在真空容器内。 超导磁体线圈组件包括非导电圆柱形结构和超导线圈。 导热电缆缠绕在圆柱形结构和线圈周围以形成导热外壳。

    Heat pipe cooled superconducting magnets with ceramic coil forms
    24.
    发明授权
    Heat pipe cooled superconducting magnets with ceramic coil forms 有权
    具有陶瓷线圈形式的热管冷却超导磁体

    公开(公告)号：US07449889B1

    公开(公告)日：2008-11-11

    申请号：US11768016

    申请日：2007-06-25

    申请人： Xianrui Huang ,  Bulent Aksel ,  Kathleen M. Amm ,  Evangelos T. Laskaris ,  Ernst W. Stautner ,  Paul S. Thompson ,  Anbo Wu ,  Minfeng Xu ,  Yan Zhao

    发明人： Xianrui Huang ,  Bulent Aksel ,  Kathleen M. Amm ,  Evangelos T. Laskaris ,  Ernst W. Stautner ,  Paul S. Thompson ,  Anbo Wu ,  Minfeng Xu ,  Yan Zhao

    IPC分类号： G01V3/00

    CPC分类号： G01R33/3815 ,  G01R33/3802 ,  G01R33/3804

    摘要： A system and method for a magnetic resonance (MR) imaging system includes a coil form, at least one magnet positioned about the coil form and configured to generate a magnetic field, at least one gradient coil for manipulating the magnetic field generated by the at least one magnet by way of a gradient field, and a heat pipe thermally connected to the coil form and having a cryogen therein. The MR imaging system also includes a cryocooler connected to the heat pipe to cool the heat pipe and the cryogen, wherein the coil form is comprised of a thermally conductive material in which eddy currents are substantially reduced during operation of the at least one gradient coil. The present invention has been described in terms of the preferred embodiment, and it is recognized that equivalents, alternatives, and modifications, aside from those expressly stated, are possible and within the scope of the appending claims.

    摘要翻译： 用于磁共振（MR）成像系统的系统和方法包括线圈形式，围绕线圈形状定位并被配置为产生磁场的至少一个磁体，至少一个梯度线圈，用于操纵由至少一个 通过梯度场的一个磁体，以及热连接到线圈形式并且在其中具有冷冻剂的热管。 MR成像系统还包括连接到热管以冷却热管和冷冻剂的低温冷却器，其中线圈形式由导热材料组成，其中涡流在至少一个梯度线圈的操作期间显着减小。 已经根据优选实施例描述了本发明，并且认识到除了明确说明的那些之外的等同物，替代方案和修改是可能的并且在所附权利要求的范围内。

    Superconducting magnetic resonance imaging magnet assembly and method with reverse wire channel orientation
    26.
    发明授权
    Superconducting magnetic resonance imaging magnet assembly and method with reverse wire channel orientation 失效
    超导磁共振成像磁体组件及反向导线方向的方法

    公开(公告)号：US06633215B2

    公开(公告)日：2003-10-14

    申请号：US09681568

    申请日：2001-05-01

    申请人： Minfeng Xu ,  Michael Robert Eggleston ,  Stephen R. Elgin, II ,  Jinhua Huang

    发明人： Minfeng Xu ,  Michael Robert Eggleston ,  Stephen R. Elgin, II ,  Jinhua Huang

    IPC分类号： H01F720

    CPC分类号： G01R33/3815 ,  G01R33/421 ,  Y10T29/49014

    摘要： A superconducting magnetic resonance imaging magnet assembly is provided. The assembly includes an axial imaging bore to receive patients and a coil housing surrounding the axial bore. A main magnet coil assembly is disposed within the housing. The main magnet coil assembly includes a plurality of main magnet coils to produce a magnetic field. At least three pairs of superconductive coils are provided. In one aspect, each of the coils in at least one of the pairs comprises a superconductor wire carrying an electric current in a direction opposite to the direction of current carried by the coils of another of the superconductive pairs. The superconductor wire comprises a superconductor core and a stabilizer having a channel. The wire is wound so that the channel has a radially outward facing opening. In another embodiment, low-aspect-ratio coils are used for at least one of the pairs of superconductive coils with the outer diameter coil portion comprising a superconductor core and a stabilizer channel having a radially outward facing opening.

    摘要翻译： 提供超导磁共振成像磁体组件。 组件包括用于接收患者的轴向成像孔和围绕轴向孔的线圈壳体。 主磁体线圈组件设置在壳体内。 主磁体线圈组件包括多个主磁体线圈以产生磁场。 提供至少三对超导线圈。 在一个方面，至少一个对中的每个线圈包括在与另一个超导对的线圈承载的电流方向相反的方向上承载电流的超导体线。 超导线包括超导体芯和具有通道的稳定器。 线缠绕，使得通道具有径向向外的开口。 在另一个实施例中，低纵横比线圈用于至少一对超导线圈，外径线圈部分包括超导体芯和具有径向向外的开口的稳定器通道。

    HEAT PIPE COOLED SUERCONDUCTING MAGNETS WITH CERAMIC COIL FORMS
    29.
    发明申请
    HEAT PIPE COOLED SUERCONDUCTING MAGNETS WITH CERAMIC COIL FORMS 有权
    热管冷却带陶瓷线圈的磁铁

    公开(公告)号：US20100277170A1

    公开(公告)日：2010-11-04

    申请号：US12268205

    申请日：2008-11-10

    申请人： Xianrui Huang ,  Bulent Aksel ,  Kathleen M. Amm ,  Evangelos T. Laskaris ,  Ernst W. Stautner ,  Paul S. Thompson ,  Anbo Wu ,  Minfeng Xu ,  Yan Zhao

    发明人： Xianrui Huang ,  Bulent Aksel ,  Kathleen M. Amm ,  Evangelos T. Laskaris ,  Ernst W. Stautner ,  Paul S. Thompson ,  Anbo Wu ,  Minfeng Xu ,  Yan Zhao

    IPC分类号： G01R33/48 ,  G01R33/44

    CPC分类号： G01R33/3815 ,  G01R33/3802 ,  G01R33/3804

    摘要： A system and method for a magnetic resonance (MR) imaging system includes a coil form, at least one magnet positioned about the coil form and configured to generate a magnetic field, at least one gradient coil for manipulating the magnetic field generated by the at least one magnet by way of a gradient field, and a heat pipe thermally connected to the coil form and having a cryogen therein. The MR imaging system also includes a cryocooler connected to the heat pipe to cool the heat pipe and the cryogen, wherein the coil form is comprised of a thermally conductive material in which eddy currents are substantially reduced during operation of the at least one gradient coil. The present invention has been described in terms of the preferred embodiment, and it is recognized that equivalents, alternatives, and modifications, aside from those expressly stated, are possible and within the scope of the appending claims.

    摘要翻译： 用于磁共振（MR）成像系统的系统和方法包括线圈形式，围绕线圈形状定位并被配置为产生磁场的至少一个磁体，至少一个梯度线圈，用于操纵由至少一个 通过梯度场的一个磁体，以及热连接到线圈形式并且在其中具有冷冻剂的热管。 MR成像系统还包括连接到热管以冷却热管和冷冻剂的低温冷却器，其中线圈形式由导热材料组成，其中涡流在至少一个梯度线圈的操作期间显着减小。 已经根据优选实施例描述了本发明，并且认识到除了明确说明的那些之外的等同物，替代方案和修改是可能的并且在所附权利要求的范围内。

    METHOD AND APPARATUS FOR ACTIVELY CONTROLLING QUENCH PROTECTION OF A SUPERCONDUCTING MAGNET
    30.
    发明申请
    METHOD AND APPARATUS FOR ACTIVELY CONTROLLING QUENCH PROTECTION OF A SUPERCONDUCTING MAGNET 有权
    用于动态控制超级磁铁猝死保护的方法和装置

    公开(公告)号：US20100013584A1

    公开(公告)日：2010-01-21

    申请号：US12567846

    申请日：2009-09-28

    申请人： Xianrui Huang ,  Minfeng Xu

    发明人： Xianrui Huang ,  Minfeng Xu

    IPC分类号： H01F6/02

    CPC分类号： G01R33/3815 ,  G01R33/288 ,  H01F6/02

    摘要： A method and apparatus for actively controlling quench protection of a superconducting magnet includes a magnetic resonance imaging (MRI) system and a computer readable storage medium having stored thereon a computer program comprising instructions which when executed by a computer cause the computer to detect a quench condition of the superconducting magnet. The instructions also cause the computer to actively control a quench protection system of the superconducting magnet in response to the detected quench condition.

    摘要翻译： 用于主动控制超导磁体的淬火保护的方法和装置包括磁共振成像（MRI）系统和其上存储有计算机程序的计算机可读存储介质，所述计算机程序包括当计算机执行时使计算机检测淬火条件的指令 的超导磁体。 指令还使得计算机响应于检测到的淬火条件主动地控制超导磁体的淬火保护系统。