Magnetic Field Adjusting Device
    1.
    发明申请
    Magnetic Field Adjusting Device 有权
    磁场调整装置

    公开(公告)号:US20070257758A1

    公开(公告)日:2007-11-08

    申请号:US10591639

    申请日:2005-03-07

    CPC classification number: G01R33/3873

    Abstract: The present invention relates to a magnetic field adjusting device; such as may be used in MRI apparatus. The device can overcome the magnetic force to enable shimming plugs to move in a controlled continuous manner, thereby achieving continuous adjusting and accurate positioning. The magnetic field adjusting device comprises; a pair of opposing pole plates (3, 31), respectively mounted on magnetic field generating sources, forming a magnetic field space; a plurality of shimming plugs (42) movably mounted at the periphery of said pole plates (3, 31), each shimming plug (42) mounted in a radially oriented retaining groove (45), so as to be movable in the direction of the retaining groove. Additionally, or alternatively, the circumferences of the magnetic field generating sources (5, 51) are arranged with adjusting bars (71, 81) which can move perpendicular to the pole plates. As an advantage of the present invention, the magnetic field can be shimmed conveniently quickly, and accurately to improve the imaging quality.

    Abstract translation: 磁场调整装置技术领域本发明涉及磁场调整装置, 例如可用于MRI装置。 该装置可以克服磁力,以使塞子以受控的连续方式移动,从而实现连续的调节和准确的定位。 磁场调节装置包括: 分别安装在磁场产生源上的一对相对极板(3,31),形成磁场空间; 多个可移动地安装在所述极板(3,31)的周边的垫片塞(42),每个垫片塞(42)安装在径向取向的保持槽(45)中,以便可沿着 保持槽。 另外或者替代地,磁场产生源(5,51)的周向布置有可以垂直于极板移动的调节杆(71,81)。 作为本发明的优点,可以方便地快速,准确地对磁场进行补片,以提高成像质量。

    Shimming structure and method for a magnetic resonance imaging apparatus
    2.
    发明申请
    Shimming structure and method for a magnetic resonance imaging apparatus 有权
    用于磁共振成像装置的匀场结构和方法

    公开(公告)号:US20070069731A1

    公开(公告)日:2007-03-29

    申请号:US10557829

    申请日:2004-05-21

    Applicant: Cheng Ni Ting Xue

    Inventor: Cheng Ni Ting Xue

    CPC classification number: G01R33/3873 G01R33/3806

    Abstract: In a magnetic resonance imaging apparatus and a method for shimming such an apparatus, at each of mirror-symmetrical assemblies respectively disposed at opposite faces of a static magnetic field generator, that each include a shimming ring, an additional shimming ring is provided that is adjustable in position relative to the other shimming ring to shim the static magnetic field. Additionally or alternatively, at each face of the static magnetic field generator, a permanently magnetic arrangement is provided that is divided into a number of permanently magnetic columns respectively having different energy levels. Additionally or alternatively, magnetic bolts, such as magnetically conducting bolts or permanently magnetic bolts can be symmetrically inserted into either of the mirror-symmetric assemblies, or the permanently magnetic columns, for additionally shimming adjustment.

    Abstract translation: 在磁共振成像装置和用于匀场这种装置的方法中,在分别设置在静磁场发生器的相对面处的每个镜对称组件中,每个包括匀场环,提供了可调节的附加匀场环 在相对于另一个垫圈的位置,以静止磁场。 附加地或替代地,在静态磁场发生器的每个面处,提供永久磁性布置,其被分成多个分别具有不同能级的永久磁性列。 附加地或替代地,诸如导磁螺栓或永久磁性螺栓的磁性螺栓可以对称地插入到任何一个镜对称组件或永久磁柱中,用于额外的调整调整。

    Magnetic field generating system applicable to nuclear magnetic resonance device
    3.
    发明申请
    Magnetic field generating system applicable to nuclear magnetic resonance device 审中-公开
    磁场发生系统适用于核磁共振装置

    公开(公告)号:US20060267715A1

    公开(公告)日:2006-11-30

    申请号:US10557818

    申请日:2004-05-21

    Applicant: Cheng Ni Ting Xue

    Inventor: Cheng Ni Ting Xue

    CPC classification number: G01R33/383

    Abstract: A magnetic field generating system suitable for use in a magnetic resonance apparatus has mirror-symmetrical assemblies disposed at opposite faces of a supporting structure, each assembly having a pole plate located between a pulsed magnetic field excitation coil and a static magnetic field generating source. Each pole plate is formed by a number of pole plate segments that either electrically insulated from each other, or conduct between adjacent segments only at single points, without forming a conductive loop. Eddy current propagation is thereby suppressed.

    Abstract translation: 适用于磁共振装置的磁场产生系统具有设置在支撑结构的相对面处的镜对称组件,每个组件具有位于脉冲磁场激励线圈和静磁场产生源之间的极板。 每个极板由多个彼此电绝缘的极板段形成,或仅在单个点处在相邻段之间导通,而不形成导电环。 由此抑制涡流传播。

    Variable Optical Attenuator
    4.
    发明授权
    Variable Optical Attenuator 有权
    可变光衰减器

    公开(公告)号:US07477827B2

    公开(公告)日:2009-01-13

    申请号:US12022776

    申请日:2008-01-30

    CPC classification number: G02B6/34 G02B6/266

    Abstract: A variable optical attenuator is disclosed, which attenuates a beam of light while preserving its polarization substantially independent of wavelength. The beam of light is attenuated by a filter patterned with a grating of blocking stripes with serrated edges, which partially block and partially transmit the beam of light, respectively. The serrated edges provide for low polarization dependent loss. Along a length of the filter, a mark to space ratio of blocking stripe and aperture widths increases. By a linear translation of the filter along its length attenuation can be varied to a desired value. A stepper motor with lead screw can provide a suitable linear translation to give the filter a latching property.

    Abstract translation: 公开了一种可变光衰减器,其在保持其基本上与波长无关的极化的同时衰减光束。 光束被由具有锯齿状边缘的阻挡条纹光栅图案化的滤光片衰减,其分别部分地阻挡并部分地透射光束。 锯齿边缘提供低偏振相关损耗。 沿滤波器的长度,阻挡条纹和孔径宽度的标记与空间比增加。 通过沿其长度的滤波器的线性平移可以将衰减改变为期望值。 具有导螺杆的步进电机可以提供适当的线性平移以使过滤器具有锁定特性。

    Magnetic resonance reception coil composite structure
    5.
    发明申请
    Magnetic resonance reception coil composite structure 审中-公开
    磁共振接收线圈复合结构

    公开(公告)号:US20060208734A1

    公开(公告)日:2006-09-21

    申请号:US11363923

    申请日:2006-02-28

    CPC classification number: G01R33/341

    Abstract: A magnetic resonance reception coil composite structure is formed by at least one rigid subassembly and at least one flexible subassembly that are connected to each other. The rigid subassembly and the flexible subassembly each include an inner conductor layer, and the inner conductor layer of the rigid subassembly and the inner conductor layer of the flexible subassembly are electrically connected. Different combinations of the rigid subassembly and the flexible subassembly can be used in multiple configurations, so that the magnetic resonance reception coil can achieve complicated shapes to meet the requirements for use at the different sites of a patient, while being comfortable and endurable for the patient.

    Abstract translation: 磁共振接收线圈复合结构由至少一个刚性子组件和彼此连接的至少一个柔性子组件形成。 刚性子组件和柔性子组件各自包括内导体层,并且刚性子组件的内导体层和柔性子组件的内导体层电连接。 刚性子组件和柔性子组件的不同组合可以以多种构造使用,使得磁共振接收线圈可以实现复杂的形状以满足在患者的不同部位使用的要求,同时对患者舒适和耐用 。

    Rotation positioning device for a coil of a magnetic resonance imaging apparatus
    6.
    发明申请
    Rotation positioning device for a coil of a magnetic resonance imaging apparatus 审中-公开
    用于磁共振成像装置的线圈的旋转定位装置

    公开(公告)号:US20060241393A1

    公开(公告)日:2006-10-26

    申请号:US11323668

    申请日:2005-12-30

    CPC classification number: G01R33/34046 A61B5/0555

    Abstract: A rotation positioning device for a coil of a magnetic resonance imaging apparatus, having a cavity in the coil for accommodating a part to be examined, has a backing member that can freely rotate within this accommodating cavity. The backing member is provided with a first driving member and a first rotating member, and the coil is provided with a second driving member and a second rotating member. The first driving member and the second driving member form a transmission pair, and the first rotating member can rotate relative to the second rotating member under the drive of the first driving member and the second driving member. The second driving member can be driven manually or by an external driving source connected thereto to drive the first driving member, thereby driving the backing member to rotate via the cooperation of the first rotating member and the second rotating member. Also, by appropriate configuration of parameters, such as position and size, of the first driving member and the second driving member, the rotation angle or range of the backing member can be controlled precisely and quantitatively.

    Abstract translation: 用于磁共振成像装置的线圈的旋转定位装置具有用于容纳待检查部件的线圈中的空腔,具有能够在该容纳腔内自由旋转的背衬构件。 背衬构件设置有第一驱动构件和第一旋转构件,线圈设置有第二驱动构件和第二旋转构件。 第一驱动构件和第二驱动构件形成传动对,并且第一旋转构件可以在第一驱动构件和第二驱动构件的驱动下相对于第二旋转构件旋转。 第二驱动构件可以手动地或通过与其连接的外部驱动源来驱动以驱动第一驱动构件,从而通过第一旋转构件和第二旋转构件的协作来驱动背衬构件旋转。 此外,通过适当配置第一驱动构件和第二驱动构件的诸如位置和尺寸的参数,可以精确地和定量地控制背衬构件的旋转角度或范围。

    Signal receiving method and device for a magnetic resonance imaging system
    7.
    发明申请
    Signal receiving method and device for a magnetic resonance imaging system 审中-公开
    用于磁共振成像系统的信号接收方法和装置

    公开(公告)号:US20050225326A1

    公开(公告)日:2005-10-13

    申请号:US11095230

    申请日:2005-03-31

    CPC classification number: G01R33/3678 A61B5/055 G01R33/3415

    Abstract: In a signal receiving method and device for a magnetic resonance imaging system, a first loop receiver coil has a saddle receiver coil overlapped thereon, and two individual loop receiver coils or two counter rotating loop receiver coils connected end-to-end are equally spaced from the first loop receiver coil along the axial direction of the first loop receiver coil, forming a dual-loop receiver coil unit. Thus, the magnetic resonance signal generated by human tissue induces current on the dual-loop receiver coil unit following excitation of the signal. When the device is operated, the signal current induced in the saddle receiver coil, the first loop receiver coil and the dual-loop receiver coil unit respectively are added, thus increasing the output signal-to-noise ratio, improving the edge imaging effect, increasing the coverage of the coil signal and improving the signal homogeneity in the imaging area.

    Abstract translation: 在用于磁共振成像系统的信号接收方法和装置中,第一回路接收器线圈具有重叠在其上的鞍座接收器线圈,并且端对端连接的两个单独的回路接收器线圈或两个反向旋转回路接收器线圈与 沿着第一回路接收器线圈的轴向的第一回路接收器线圈,形成双回路接收器线圈单元。 因此,由人体组织产生的磁共振信号在信号激励之后在双回路接收线圈单元上产生电流。 当设备工作时,分别在鞍座接收线圈,第一回路接收线圈和双回路接收线圈单元中感应出的信号电流相加,从而增加输出信噪比,提高边缘成像效果, 增加线圈信号的覆盖范围,提高成像区域的信号均匀性。

    Variable Optical Attenuator
    9.
    发明申请
    Variable Optical Attenuator 有权
    可变光衰减器

    公开(公告)号:US20080205845A1

    公开(公告)日:2008-08-28

    申请号:US12022776

    申请日:2008-01-30

    CPC classification number: G02B6/34 G02B6/266

    Abstract: A variable optical attenuator is disclosed, which attenuates a beam of light while preserving its polarization substantially independent of wavelength. The beam of light is attenuated by a filter patterned with a grating of blocking stripes with serrated edges, which partially block and partially transmit the beam of light, respectively. The serrated edges provide for low polarization dependent loss. Along a length of the filter, a mark to space ratio of blocking stripe and aperture widths increases. By a linear translation of the filter along its length attenuation can be varied to a desired value. A stepper motor with lead screw can provide a suitable linear translation to give the filter a latching property.

    Abstract translation: 公开了一种可变光衰减器,其在保持其基本上与波长无关的极化的同时衰减光束。 光束被由具有锯齿状边缘的阻挡条纹光栅图案化的滤光片衰减,其分别部分地阻挡并部分地透射光束。 锯齿边缘提供低偏振相关损耗。 沿滤波器的长度,阻挡条纹和孔径宽度的标记与空间比增加。 通过沿其长度的滤波器的线性平移可以将衰减改变为期望值。 具有导螺杆的步进电机可以提供适当的线性平移以使过滤器具有锁定特性。

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