GRADIENT MAGNETIC FIELD COIL AND MAGNETIC RESONANCE IMAGING DEVICE
    81.
    发明申请
    GRADIENT MAGNETIC FIELD COIL AND MAGNETIC RESONANCE IMAGING DEVICE 有权
    梯度磁场线圈和磁共振成像装置

    公开(公告)号:US20120176137A1

    公开(公告)日:2012-07-12

    申请号:US13391066

    申请日:2010-08-26

    IPC分类号: G01R33/381

    CPC分类号: G01R33/385 G01R33/4215

    摘要: In the magnetic resonance imaging device, the distance between the first and second coils is different in the circumferential direction and has a first region (A1) (θ=0, π) and a second region (A2) (θ=π/2) narrower than the first region (A1). In the first coil, wiring patterns (17a, 17b) on the side of a zero-plane (F0) passing through the center of the first coil and perpendicular to the axis direction (z-axis direction) meander in the circumferential direction such that the wiring patterns (17a, 17b) depart from the zero-plane (F0) in the first region (A1) and approach the zero-plane (F0) in the second region (A2). This provides a gradient magnetic field coil capable of configuring wiring patterns without using a loop coil that does not pass through the z-axis.

    摘要翻译: 在磁共振成像装置中,第一和第二线圈之间的距离在圆周方向上不同,并且具有第一区域(A1)(η = 0,& pgr)和第二区域(A2)(&Thetas; =&pgr ; / 2)比第一区域(A1)窄。 在第一线圈中,通过第一线圈的中心并且垂直于轴线方向(z轴方向)的零平面(F0)侧的布线图案(17a,17b)在圆周方向上弯曲,使得 布线图案(17a,17b)从第一区域(A1)中的零平面(F0)偏离并接近第二区域(A2)中的零平面(F0)。 这提供了能够配置布线图案而不使用不通过z轴的环形线圈的梯度磁场线圈。

    MAGNETIC RESONANCE IMAGING APPARATUS AND EDDY CURRENT COMPENSATION METHOD
    82.
    发明申请
    MAGNETIC RESONANCE IMAGING APPARATUS AND EDDY CURRENT COMPENSATION METHOD 有权
    磁共振成像装置和EDDY电流补偿方法

    公开(公告)号:US20120098535A1

    公开(公告)日:2012-04-26

    申请号:US13377275

    申请日:2010-06-04

    IPC分类号: G01R33/58 G01R33/38

    CPC分类号: G01R33/56518

    摘要: An object is to correct a magnetic field caused by an eddy current, which is generated due to application of a gradient magnetic field, not only in the application direction of the gradient magnetic field but also in a direction different from the application direction of the gradient magnetic field. In the present invention, in order to achieve this object, a compensation magnetic field which compensates for an eddy current magnetic field generated in each of an application direction of a test gradient magnetic field and a direction different from the application direction in each direction is calculated using the test gradient magnetic field. When generating an arbitrary gradient magnetic field, a compensation magnetic field which compensates for an eddy current magnetic field according to application of an arbitrary gradient magnetic field on the basis of the measured eddy current magnetic field in each direction is generated together with the arbitrary gradient magnetic field.

    摘要翻译: 目的是校正由于施加梯度磁场而产生的涡流引起的磁场,不仅在梯度磁场的施加方向上,而且在与梯度的施加方向不同的方向上 磁场。 在本发明中,为了达到上述目的,计算出补偿磁场,该补偿磁场补偿在测试梯度磁场的施加方向和与各方向上的施加方向不同的方向中的每一方产生的涡流磁场 使用测试梯度磁场。 当产生任意梯度磁场时,根据任意梯度磁场的应用,根据在每个方向上测量的涡流磁场来补偿涡流磁场的补偿磁场与任意梯度磁场一起产生 领域。

    Nuclear Magnetic Resonance Imaging System and Coil Unit
    83.
    发明申请
    Nuclear Magnetic Resonance Imaging System and Coil Unit 有权
    核磁共振成像系统和线圈单元

    公开(公告)号:US20110175616A1

    公开(公告)日:2011-07-21

    申请号:US12519832

    申请日:2007-12-13

    IPC分类号: G01R33/44

    摘要: There is provided a coil unit having a large region of homogeneous sensitivity for the axial direction even with a shortened rung length of birdcage type RF coil.The coil unit comprises a gradient coil which is disposed along a static magnetic field generating source, and a radio frequency coil which is disposed along the gradient coil in a test region at a position closer to the center of the test region compared with the gradient coil, and a conductor part which is disposed between the gradient coil and the radio frequency coil, and covers periphery of the radio frequency coil. The radio frequency coil comprises a first loop coil and a second loop coil locating in planes substantially perpendicular to direction of the static magnetic field, a plurality of linear conductors connecting the first loop coil and the second loop coil and substantially parallel to the direction of the static magnetic field, and a plurality of first capacitors disposed in the first loop coil and the second loop coil. The coil unit further comprises a first connecting part, which electrically connects the radio frequency coil and the conductor part via a second capacitor and comprises an electric power supply circuit disposed in parallel to the second capacitor, and a second connecting part which connects the radio frequency coil and the conductor part via a third capacitor.

    摘要翻译: 提供了一种线圈单元,即使在鸟笼型RF线圈的长度较短的情况下也具有轴向均匀的灵敏度大的区域。 线圈单元包括沿着静磁场发生源设置的梯度线圈,以及与梯度线圈相比更靠近测试区域的中心的位置处的测试区域中的沿梯度线圈布置的射频线圈 以及布置在所述倾斜线圈和所述射频线圈之间并且覆盖所述射频线圈的周围的导体部。 射频线圈包括位于基本上垂直于静磁场方向的平面中的第一环形线圈和第二环形线圈,连接第一环形线圈和第二环形线圈并且基本上平行于静态磁场方向的多个线性导体 静磁场和设置在第一环形线圈和第二环形线圈中的多个第一电容器。 线圈单元还包括第一连接部分,其经由第二电容器电连接射频线圈和导体部分,并且包括与第二电容器并联设置的电源电路,以及连接射频 线圈和导体部分经由第三电容器。

    Magnetic Resonance Imaging Apparatus
    87.
    发明申请
    Magnetic Resonance Imaging Apparatus 失效
    磁共振成像仪

    公开(公告)号:US20080309343A1

    公开(公告)日:2008-12-18

    申请号:US11628097

    申请日:2005-05-25

    IPC分类号: G01R33/3873

    摘要: A magnetic resonance imaging apparatus capable of suppressing noise caused by vibration of a gradient magnetic field coil and improving image quality is realized.A shim tray 22 is disposed between a static magnetic field generating magnet 4 and a gradient magnetic field generating coil 13. A large number of ferromagnetic shims are disposed in a large number of holes (screw holes) 24 formed in the shim tray 22. Vibration dampers 23 are disposed in holes formed in the shim tray 22 to reduce noise generated by vibration of the gradient magnetic field generating coil 13, which is propagated to the static magnetic field generating magnet through solid bodies and shakes the static magnetic field generating magnet, etc. It is hence possible to secure areas for arrangement of two means, i.e., static magnetic-field non-uniformity correcting means and vibration suppressing means, to reduce the noise caused by the vibration of the gradient magnetic field generating coil 13, and to suppress deterioration of image quality.

    摘要翻译: 实现了能够抑制由梯度磁场线圈的振动引起的噪声并提高图像质量的磁共振成像装置。 垫片托盘22设置在静磁场产生磁体4和梯度磁场产生线圈13之间。大量铁磁垫片设置在形成在垫片托盘22中的大量孔(螺孔)24中。振动 减振器23设置在形成在垫片托盘22中的孔中,以减少由倾斜磁场产生线圈13的振动产生的噪声,该噪声通过固体传播到静态磁场产生磁体并摇动静磁场产生磁体等 因此,可以确保用于布置两个装置的区域,即静态磁场不均匀性校正装置和振动抑制装置,以减少由倾斜磁场产生线圈13的振动引起的噪声,并且抑制 图像质量恶化。

    Golf club grip and golf club using the same
    88.
    发明授权
    Golf club grip and golf club using the same 有权
    高尔夫球杆握把和高尔夫球杆使用相同

    公开(公告)号:US07399236B2

    公开(公告)日:2008-07-15

    申请号:US11429240

    申请日:2006-05-08

    申请人: Hiroyuki Takeuchi

    发明人: Hiroyuki Takeuchi

    IPC分类号: A63B53/14

    摘要: A golf club grip includes: a grip body including a grip cylinder portion and a grip end portion disposed at one end of the grip cylinder portion and formed with a through-hole for communicating a grip interior with the outside; and a vibration absorption member formed from a viscoelastic material and formed separately from the grip body. The vibration absorption member is removably attached to the grip body. The vibration absorption member includes: a plane portion and a bar-like portion formed integrally with the plane portion. The bar-like portion extends through the through-hole of the grip end portion as projecting inwardly of the grip cylinder portion.

    摘要翻译: 一种高尔夫球杆把手包括:把手本体,包括夹持筒部分和握持端部,其设置在抓握筒部分的一端,并形成有用于使抓握内部与外部连通的通孔; 以及由粘弹性材料形成并与抓握体分开形成的振动吸收部件。 振动吸收构件可拆卸地附接到抓握体。 振动吸收构件包括:平面部分和与平面部分一体形成的棒状部分。 杆状部分在抓握筒部分向内突出时延伸穿过抓握端部的通孔。

    Magnetic resonance imaging method and system
    89.
    发明授权
    Magnetic resonance imaging method and system 有权
    磁共振成像方法及系统

    公开(公告)号:US07348779B2

    公开(公告)日:2008-03-25

    申请号:US10564249

    申请日:2004-06-08

    IPC分类号: G01V3/00

    摘要: A magnetic resonance imaging method comprising a step for applying one or more gradient magnetic field pulses continuously, a step for calculating a residual magnetic field being generated from a magnet by an gradient magnetic field pulse based on a residual magnetic field response function representing the relation between the strength of the gradient magnetic field pulse being applied and the strength of a residual magnetic field being generated, and a step for correcting the residual magnetic field thus calculated. The magnetic resonance imaging method is further provided with a step for updating the residual magnetic field response function with time depending on the application history of the gradient magnetic field pulses being applied continuously.

    摘要翻译: 一种磁共振成像方法,包括连续施加一个或多个梯度磁场脉冲的步骤,用于通过梯度磁场脉冲计算由磁体产生的残余磁场的步骤,所述梯度磁场脉冲基于残余磁场响应函数,所述残余磁场响应函数表示 所施加的梯度磁场脉冲的强度和产生剩余磁场的强度,以及用于校正由此计算出的残余磁场的步骤。 磁共振成像方法还具有根据连续施加的梯度磁场脉冲的应用历史随时间来更新残余磁场响应函数的步骤。

    Racket frame
    90.
    发明授权
    Racket frame 失效
    拍框架

    公开(公告)号:US07201680B2

    公开(公告)日:2007-04-10

    申请号:US11130213

    申请日:2005-05-17

    申请人: Hiroyuki Takeuchi

    发明人: Hiroyuki Takeuchi

    IPC分类号: A63B49/00

    摘要: A racket frame including a grip part, a shaft part, a throat part, and a head part formed hollowly with a fiber reinforced resin and having a weight not less than 100 g nor more than 270 g. The racket frame is provided with a dynamic damper comprising a mass member and a viscoelastic member mounted on a part of a peripheral surface of the mass member. The dynamic damper is mounted inside the grip part by fixing the viscoelastic member to a position of an inner wall of the grip part located within a range of 0.2 L from a free end of the grip part, supposing that a whole length of the racket frame is L in such a way that inside the grip part, at least one part of the mass member is shakable with respect to the inner wall of the grip part.

    摘要翻译: 一种球拍框架,包括握持部分,轴部分,喉部分和头部部分,该中心部分用纤维增强树脂中空地形成,重量不小于100g,不大于270g。 球拍框架设置有动力阻尼器,其包括质量构件和安装在质量构件的外周表面的一部分上的粘弹构件。 动力阻尼器通过将粘弹性构件固定在握柄部分的内壁的位置上,该夹紧部件位于从柄部的自由端位于0.2L范围内的位置,假设球拍框架的整个长度 是L,使得在握持部分内部,质量部件的至少一部分相对于把手部分的内壁是可摇动的。