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10 条记录 (耗时 0.033 秒)

    Magnetic resonance imaging scanner with molded fixed shims
    4.
    发明授权
    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：US07495441B2

    公开(公告)日：2009-02-24

    申请号：US10558768

    申请日：2004-04-19

    申请人： William H. Amor ,  Dennis K. Everett ,  Jerome S. Alden ,  Robert G. Henderson ,  Terrence M. Doyle ,  Ronald B. Sharpless ,  Gerardus B. J. Mulder ,  Gerardus N. Peeren

    发明人： William H. Amor ,  Dennis K. Everett ,  Jerome S. Alden ,  Robert G. Henderson ,  Terrence M. Doyle ,  Ronald B. Sharpless ,  Gerardus B. J. Mulder ,  Gerardus N. Peeren

    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（d1）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（d2）刚性地定位在主磁体组件（10）的内部。 第二距离（d2）与第一距离（d1）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（d3）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（d4）布置在主磁体组件（10）的内部。

    Draining apparatus for a fluid reservoir
    6.
    发明授权
    Draining apparatus for a fluid reservoir 失效
    用于流体储存器的排水装置

    公开(公告)号：US4155534A

    公开(公告)日：1979-05-22

    申请号：US777386

    申请日：1977-03-14

    申请人： Thomas J. Hajek, II ,  Robert G. Henderson

    发明人： Thomas J. Hajek, II ,  Robert G. Henderson

    IPC分类号： B65D88/54 ,  F16K3/26 ,  F16K31/58

    CPC分类号： B65D88/54 ,  F16K3/26 ,  F16K31/58 ,  Y10T137/88094 ,  Y10T137/9464

    摘要： Draining apparatus is provided for a fluid reservoir having an opening. The apparatus includes a guide housing connected about the reservoir opening and a fluid carrier conduit slidably positioned within the guide housing. The fluid carrier conduit is movable relative to the guide housing from a first nesting position to a second extended position for draining the fluid reservoir.

    摘要翻译： 排水装置用于具有开口的流体储存器。 该装置包括围绕储存器开口连接的引导壳体和可滑动地定位在引导壳体内的流体承载管道。 流体载体管道可相对于引导壳体从第一嵌套位置移动到用于排出流体储存器的第二延伸位置。

    Flexible nuclear magnetic resonance receiver coils and systems
    7.
    发明授权
    Flexible nuclear magnetic resonance receiver coils and systems 失效
    灵活的核磁共振接收线圈和系统

    公开(公告)号：US5594339A

    公开(公告)日：1997-01-14

    申请号：US500821

    申请日：1995-07-11

    申请人： Robert G. Henderson ,  James W. Kristoff ,  David A. Molyneaux

    发明人： Robert G. Henderson ,  James W. Kristoff ,  David A. Molyneaux

    IPC分类号： A61B5/055 ,  G01R33/34 ,  G01R33/341 ,  H01F5/00 ,  G01V3/00

    CPC分类号： G01R33/3415 ,  G01R33/34084 ,  G01R33/34007 ,  G01R33/341

    摘要： A resonance exciting coil (C) disposed in an image region in which a main magnetic field and transverse gradients have been produced. A flexible receiving coil (D) includes a flexible plastic sheet (40) on which an electrically continuous flexible foil strip (36) is adhered to receive signals from the resonating nuclei. The coil also includes components (24), mounted on the flexible plastic sheet (40), which may amplify the received signals before they are transmitted along a cable (22). A first soft material layer (44) is mounted on the flexible plastic sheet (40) for providing comfort to the patient. A flexible mechanical structure (50) on which two flexible receiving coils (F, G) adjusts an overlap between the coils (F, G) as the coils are flexed to adjust interaction properties of the coils (FIGS. 4 A, 4B). Pivotal rods (56) of a fixed length which connect two flexible coils (F, G) cause the spacing of the coils to vary in accordance to a flex applied to the coils to adjust the relative interactive properties with flexing (FIGS. 5 A, 5B). Flexible coils (D) in modular components provide identification points on each modular component which connect to similar identification points on other flexible coil modular components (FIGS. 9 A-9C).

    摘要翻译： 设置在已经产生主磁场和横向梯度的图像区域中的共振励磁线圈（C）。 柔性接收线圈（D）包括柔性塑料片（40），电连续的柔性箔条（36）粘附在柔性塑料片上以接收来自谐振核的信号。 线圈还包括安装在柔性塑料片（40）上的组件（24），其可以在沿着电缆（22）传输之前放大所接收的信号。 第一柔软材料层（44）安装在柔性塑料片（40）上，以便为患者提供舒适感。 柔性机械结构（50），其中两个柔性接收线圈（F，G）在线圈弯曲时调节线圈（F，G）之间的重叠，以调节线圈的相互作用特性（图4A，4B）。 连接两个柔性线圈（F，G）的固定长度的枢杆（56）使得线圈的间距根据施加到线圈的弯曲而变化，以通过弯曲来调整相对的相对性质（图5A， 5B）。 模块化组件中的柔性线圈（D）在每个模块化组件上提供连接到其他柔性线圈模块组件上的类似识别点的识别点（图9A-9C）。

    Draining apparatus for a fluid reservoir
    8.
    发明授权
    Draining apparatus for a fluid reservoir 失效
    用于流体储存器的排水装置

    公开(公告)号：US4183498A

    公开(公告)日：1980-01-15

    申请号：US970407

    申请日：1978-12-18

    申请人： Thomas J. Hajek, II ,  Robert G. Henderson

    发明人： Thomas J. Hajek, II ,  Robert G. Henderson

    IPC分类号： B65D88/54 ,  F16K3/26 ,  F16K31/58

    CPC分类号： B65D88/54 ,  F16K3/26 ,  F16K31/58 ,  Y10T137/86187 ,  Y10T137/86348

    摘要： Draining apparatus is provided for a fluid reservoir having an opening. The apparatus includes a guide housing connected about the reservoir opening and a fluid carrier conduit slidably positioned within the guide housing. The fluid carrier conduit is movable relative to the guide housing from a first nesting position to a second extended position for draining the fluid reservoir.

    摘要翻译： 排水装置用于具有开口的流体储存器。 该装置包括围绕储存器开口连接的引导壳体和可滑动地定位在引导壳体内的流体承载管道。 流体载体管道可相对于引导壳体从第一嵌套位置移动到用于排出流体储存器的第二延伸位置。

    Split-top, neck and head vascular array for magnetic resonance imaging
    9.
    发明授权
    Split-top, neck and head vascular array for magnetic resonance imaging 失效
    分裂顶部，颈部和头部血管阵列用于磁共振成像

    公开(公告)号：US5664568A

    公开(公告)日：1997-09-09

    申请号：US512722

    申请日：1995-08-08

    申请人： Ravi Srinivasan ,  Robert G. Henderson ,  Robert A. Elek

    发明人： Ravi Srinivasan ,  Robert G. Henderson ,  Robert A. Elek

    IPC分类号： A61B5/055 ,  G01R33/34 ,  G01R33/36

    CPC分类号： G01R33/3657 ,  G01R33/34046 ,  G01R33/34007 ,  G01R33/3685

    摘要： A coil assembly (40) includes a first, birdcage type head coil assembly (42) dimensioned to receive a patient's head and a second, neck coil assembly (44) including an anterior coil portion (44a) and a posterior coil portion (44b) dimensioned to receive the patient's neck region. The head and neck coils are partially overlapped. A first cable extends (98a) from the anterior coil portion past the birdcage head coil assembly and a second coaxial cable (98b) extends from the posterior portion past the birdcage head coil assembly. A first decoupling circuit (104a) is disposed in the first coaxial cable beyond a guard ring (106) and a second decoupling circuit (104b) is disposed in the second coaxial cable adjacent the region of overlap between the head and neck coil assemblies. The decoupling circuits are positioned and tuned to prevent radio frequency communication along the coaxial cable sheath between the head and neck coil assemblies. The head and neck coil assemblies are mounted in the mechanical housing which is openable such that an upper half of the guard ring and the birdcage coil and the anterior coil are removable as a unit from the lower half of the guard ring and birdcage coil and the posterior neck coil to facilitate patient access.

    摘要翻译： 线圈组件（40）包括第一鸟笼型头部线圈组件（42），其尺寸设置成接收病人的头部;以及包括前部线圈部分（44a）和后部线圈部分（44b）的第二颈部线圈组件（44） 尺寸用于接收患者的颈部区域。 头颈部线圈部分重叠。 第一缆线从前线圈部分延伸穿过鸟笼头线圈组件（98a），并且第二同轴电缆（98b）从后部延伸穿过鸟笼头线圈组件。 第一去耦电路（104a）设置在第一同轴电缆中超过保护环（106），并且第二去耦电路（104b）设置在邻近头颈线圈组件之间的重叠区域的第二同轴电缆中。 去耦电路被定位和调谐以防止头颈线圈组件之间沿同轴电缆护套的射频通信。 头颈线圈组件安装在机械壳体中，其可打开，使得保护环的上半部分和鸟笼线圈和前线圈作为一个单元可从保护环和鸟笼线圈的下半部分移除，并且 后颈线圈以方便患者进入。