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    X射线管装置
    2.
    发明公开
    X射线管装置 失效

    公开(公告)号：CN101689465A

    公开(公告)日：2010-03-31

    申请号：CN200780053605.5

    申请日：2007-08-09

    Applicant: 株式会社岛津制作所

    Inventor： 富田定 ,  林茂树

    IPC: H01J35/14 ,  H01J35/10

    CPC classification number: H01J35/14 ,  H01J35/16 ,  H01J35/305 ,  H01J2235/1212 ,  H01J2235/1216 ,  H01J2235/162

    Abstract: 本发明提供一种X射线管装置，以往，将磁场发生器(4)与电子束(B)的轴(O)相垂直配置，本发明的X射线管装置中，将磁场发生器(4)相对于与电子束(B)的轴(O)相垂直的轴(V)倾斜配置。具体地说，将磁场发生器(4)相对于与所述电子束(B)的轴(O)相垂直的轴(V)，在比聚焦、偏转的电子束(B)更靠阴极(2)侧的范围内倾斜配置。若倾斜到作为阴极(2)侧的相反侧的阳极(5)侧时，变小的X射线源直径可能变大，但是通过在比电子束(B)更靠阴极(2)侧的范围内倾斜配置磁场发生器(4)，能够使X射线源直径变小。

    X射线管装置
    4.
    发明授权
    X射线管装置 失效

    公开(公告)号：CN101689465B

    公开(公告)日：2012-05-16

    申请号：CN200780053605.5

    申请日：2007-08-09

    Applicant: 株式会社岛津制作所

    Inventor： 富田定 ,  林茂树

    IPC: H01J35/14 ,  H01J35/10

    CPC classification number: H01J35/14 ,  H01J35/16 ,  H01J35/305 ,  H01J2235/1212 ,  H01J2235/1216 ,  H01J2235/162

    Abstract: 本发明提供一种X射线管装置，以往，将磁场发生器(4)与电子束(B)的轴(O)相垂直配置，本发明的X射线管装置中，将磁场发生器(4)相对于与电子束(B)的轴(O)相垂直的平面(V)倾斜配置。具体地说，将磁场发生器(4)相对于与所述电子束(B)的轴(O)相垂直的平面(V)，在比聚焦、偏转的电子束(B)更靠阴极(2)侧的范围内倾斜配置。若倾斜到作为阴极(2)侧的相反侧的阳极(5)侧时，变小的X射线源直径可能变大，但是通过在比电子束(B)更靠阴极(2)侧的范围内倾斜配置磁场发生器(4)，能够使X射线源直径变小。

    X-ray tube, particularly rotating bulb x-ray tube
    6.
    发明申请
    X-ray tube, particularly rotating bulb x-ray tube 审中-公开
    X射线管，特别是旋转灯泡的X射线管

    公开(公告)号：US20020186816A1

    公开(公告)日：2002-12-12

    申请号：US10134130

    申请日：2002-04-29

    Inventor： Joerg Freudenberger ,  Erich Hell ,  Detlef Mattern ,  Peter Schardt

    IPC: H01J035/10

    CPC classification number: H01J35/305 ,  H01J2235/162

    Abstract: An x-ray tube has a vacuum housing containing an electron-emitting cathode and an anode on which the electron beam, accelerated with an electrical field, is incident. The x-ray tube contains a magnet system which generates a main magnetic field with spring focus for deflecting and focusing the electron beam such that the focal spot on the incident surface of the anode can be azimuthally varied. A coil is located spatially separate from the main magnetic field and the alignment of the focal spot relative to the incident surface can be influenced therewith. The coil is fashioned and arranged such that a non-uniform magnetic field that effects a parallel alignment of the focal spot in the spring function is generated therewith.

    Abstract translation: X射线管具有包含电子发射阴极和阳极的真空壳体，电子束在其上被电场加速。 X射线管包含磁体系统，其产生具有弹簧聚焦的主磁场，用于偏转和聚焦电子束，使得阳极入射表面上的焦斑可以方位角变化。 线圈位于空间上与主磁场分离，并且焦点相对于入射表面的对准可能受到影响。 线圈被形成并布置成使得在弹簧功能中实现焦斑的平行对准的不均匀磁场。

    X-ray tube with bearing slip ring
    7.
    发明授权
    X-ray tube with bearing slip ring 失效
    带轴承滑环的X射线管

    公开(公告)号：US5241577A

    公开(公告)日：1993-08-31

    申请号：US817294

    申请日：1992-01-06

    Applicant: James E. Burke ,  Salvatore G. Perno

    Inventor： James E. Burke ,  Salvatore G. Perno

    IPC: H01J35/10 ,  H01J35/16 ,  H01J35/24 ,  H05G1/08 ,  H05G1/66

    CPC classification number: H01J35/24 ,  H01J35/165 ,  H05G1/08 ,  H05G1/66 ,  H01J2235/162

    Abstract: An anode (A) closes one end of an evacuated envelope (C) and a cathode end plate (22) closes the other. A cathode assembly (B) is mounted on a bearing (40) in the evacuated envelope such that the envelope and cathode can undergo relative rotation. A motor (38) rotates the anode and envelope while a pair of magnets (44, 46) hold the cathode assembly stationary. Bearing (40) functions as a current path from a current source (72) to the primary windings of a transformer (58). Another bearing (94) provides a return current path from the transformer to the current source. The secondary windings of the transformer are connected with a cathode filament (52). The transformer enables a relatively low ampere current to pass through the bearings to limit cathodic damage to the bearings, yet provides sufficient amperage to the filament to cause thermionic emission. The bearings provide a direct transfer of current which does not degrade the vacuum in the envelope in such a manner that the current through the cathode filament can be measured directly from outside the envelope.

    CONE BEAM COMPUTED TOMOGRAPHY VOLUMETRIC IMAGING SYSTEM
    8.
    发明申请
    CONE BEAM COMPUTED TOMOGRAPHY VOLUMETRIC IMAGING SYSTEM 审中-公开
    CONE光束计算机图像体积成像系统

    公开(公告)号：WO2013173666A1

    公开(公告)日：2013-11-21

    申请号：PCT/US2013/041487

    申请日：2013-05-17

    Applicant: CARESTREAM HEALTH, INC.

    Inventor： YORKSTON, John ,  FOOS, David, H.

    IPC: A61B6/03

    CPC classification number: A61B6/4007 ,  A61B6/032 ,  A61B6/06 ,  A61B6/4085 ,  A61B6/42 ,  A61B6/4405 ,  A61B6/488 ,  A61B6/501 ,  A61B6/54 ,  G06T2207/10141 ,  G06T2207/10144 ,  G06T2207/10148 ,  G06T2207/10152 ,  G06T2211/412 ,  H01J35/24 ,  H01J37/09 ,  H01J2235/162 ,  H01J2237/045

    Abstract: Embodiments of methods and/or apparatus for a radiographic imaging can include a plurality of x-ray sources disposed in a curve and a detector configured to revolve relative thereto. In one embodiment, a CBCT imaging method and/or apparatus can include performing a first scan at a first speed using stationary angularly distributed x-ray sources to acquire first CBCT projection data that impinge a detector of a first field of view (FOV), identifying an area of interest within the first FOV, and performing a second scan at a second speed using the x-ray sources acquire second CBCT projection data that impinge a portion of the detector of a second smaller FOV including the area of interest within the first FOV using second emissions by the x-ray sources, where the second speed is greater than the first speed.

    Abstract translation: 用于放射线照相成像的方法和/或装置的实施例可以包括设置在曲线中的多个x射线源和被配置为相对于其旋转的检测器。 在一个实施例中，CBCT成像方法和/或设备可以包括使用固定的角度分布的x射线源以第一速度执行第一扫描以获取撞击第一视野（FOV）的检测器的第一CBCT投影数据， 识别所述第一FOV内的感兴趣区域，以及使用所述x射线源以第二速度执行第二扫描获得第二CBCT投影数据，所述第二CBCT投影数据将所述检测器的一部分激活包括所述第一视场内的所述感兴趣区域的第二小FOV FOV使用x射线源的第二次发射，其中第二速度大于第一速度。

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