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    2.
    发明专利
    未知

    公开(公告)号：DE602006005137D1

    公开(公告)日：2009-03-26

    申请号：DE602006005137

    申请日：2006-01-31

    Applicant: PHILIPS INTELLECTUAL PROPERTY

    Inventor： BONTUS CLAAS ,  GRASS MICHAEL ,  KOEHLER THOMAS

    IPC: G06T11/00

    Abstract: The invention relates to a computed tomography method in which a periodically moving object is irradiated by a conical beam bundle. An nPi-relative movement is generated between a radiation source, which generates the conical beam bundle, and the object. During the nPi-relative movement, measured values are acquired, which depend on the intensity in the beam bundle on the other side of the object and from these measured values filter values are determined, which are divided into different groups. The filter values of at least one group are weighted in dependence on the movement of the object, wherein, when filter values of several groups are weighted, filter values of different groups are weighted differently in dependence on the movement of the object. Finally, a CT image of the object is reconstructed from the filter values.

    6.
    发明专利
    未知

    公开(公告)号：DE602004010834T2

    公开(公告)日：2008-12-11

    申请号：DE602004010834

    申请日：2004-10-05

    Applicant: PHILIPS INTELLECTUAL PROPERTY

    Inventor： VAN STEVENDAAL UDO ,  BONTUS CLAAS ,  FORTHMANN PETER

    IPC: G06T11/00

    Abstract: Known reconstruction techniques from coherent scattered x-rays apply non-exact reconstruction techniques. According to the present invention, a relatively wide spectrum of wave-vector transfers q of the scattered x-ray photons is acquired. The projection data is interpreted as line integrals in the x y-q space and the projection data is resorted to correspond to an acquisition along any source trajectory. Due to this, an exact helical reconstruction algorithms may be applied and redundant data may be used to obtain a better image quality.

    7.
    发明专利
    未知

    公开(公告)号：DE602004010834D1

    公开(公告)日：2008-01-31

    申请号：DE602004010834

    申请日：2004-10-05

    Applicant: PHILIPS INTELLECTUAL PROPERTY

    Inventor： VAN STEVENDAAL UDO ,  BONTUS CLAAS ,  FORTHMANN PETER

    IPC: G06T11/00

    Abstract: Known reconstruction techniques from coherent scattered x-rays apply non-exact reconstruction techniques. According to the present invention, a relatively wide spectrum of wave-vector transfers q of the scattered x-ray photons is acquired. The projection data is interpreted as line integrals in the x y-q space and the projection data is resorted to correspond to an acquisition along any source trajectory. Due to this, an exact helical reconstruction algorithms may be applied and redundant data may be used to obtain a better image quality.

    X-RAY TUBE WITH OSCILLATING ANODE
    9.
    发明申请
    X-RAY TUBE WITH OSCILLATING ANODE 审中-公开
    带振动阳极的X射线管

    公开(公告)号：WO2007129244A3

    公开(公告)日：2008-01-10

    申请号：PCT/IB2007051525

    申请日：2007-04-25

    Applicant: PHILIPS INTELLECTUAL PROPERTY ,  KONINKL PHILIPS ELECTRONICS NV ,  FORTHMANN PETER ,  BONTUS CLAAS ,  KOEHLER THOMAS

    Inventor： FORTHMANN PETER ,  BONTUS CLAAS ,  KOEHLER THOMAS

    IPC: A61B6/03 ,  H01J35/28

    CPC classification number: A61B6/032 ,  A61B6/4021 ,  H01J35/101 ,  H01J35/26 ,  H01J35/28 ,  H01J2235/10

    Abstract: It is described an X-ray tube (205), in particular for use in computed tomography, comprising an electron source (250), for generating an electron beam (255), an electron deflection device (256) for deflecting the generated electron beam (255), a control unit (257) being coupled to the electron deflection device (256) for spatially controlling the deflection, and an anode (206), which is arranged such that the electron beam (255) impinges onto a focal spot of a surface of the anode (206). Thereby the anode (206) is movable along a z-axis in an oscillating manner, the surface of the anode (206) is oriented oblique with respect to the z-axis, and the control unit (257) is adapted to spatially control the focal spot (255 a) in such a manner that the focal spot moves essentially in a discrete manner between a first focal spot position (106a, 406a) having a first z-coordinate and a second focal spot position (106b, 406b) having a second z-coordinate being different from the first z-coordinate.

    Abstract translation: 描述了一种特别用于计算机断层摄影的X射线管（205），包括用于产生电子束（255）的电子源（250），用于使所产生的电子束偏转的电子偏转装置（256） （255），耦合到电子偏转装置（256）的空间控制偏转的控制单元（257）和阳极（206），其布置成使得电子束（255）撞击到 阳极的表面（206）。 因此，阳极（206）可以以振荡方式沿z轴移动，阳极（206）的表面相对于z轴倾斜定向，并且控制单元（257）适于空间控制 焦点（255a），使得焦点基本上以离散的方式移动在具有第一z坐标的第一焦斑位置（106a，406a）和具有第一焦点位置（106b，406b）之间的焦点 第二z坐标与第一z坐标不同。

    COMPUTER TOMOGRAPHY METHOD USING A CONE-SHAPED BUNDLE OF RAYS
    10.
    发明申请
    COMPUTER TOMOGRAPHY METHOD USING A CONE-SHAPED BUNDLE OF RAYS 审中-公开
    计算机图形方法使用一个锥形的组合

    公开(公告)号：WO2005023114A8

    公开(公告)日：2006-06-29

    申请号：PCT/IB2004051523

    申请日：2004-08-23

    Applicant: PHILIPS INTELLECTUAL PROPERTY ,  KONINKL PHILIPS ELECTRONICS NV ,  BONTUS CLAAS ,  KOEHLER THOMAS ,  GRASS MICHAEL

    Inventor： BONTUS CLAAS ,  KOEHLER THOMAS ,  GRASS MICHAEL

    IPC: A61B6/00 ,  A61B6/03 ,  G06T11/00

    CPC classification number: A61B6/5217 ,  A61B6/027 ,  A61B6/032 ,  A61B6/4028 ,  A61B6/5264 ,  A61B6/527 ,  A61B6/541 ,  G06T11/005 ,  G06T11/006 ,  G06T2211/412

    Abstract: The invention relates to a computer tomography method in which an examination area is passed through by a cone-shaped bundle of rays. The bundle of rays comes from a radiation source location which moves around the examination area on an overall trajectory. The overall trajectory consists of a first, closed partial trajectory, at least one second, closed partial trajectory and at least one third partial trajectory which connects the first and the at least one second partial trajectories to one another. Measured values which depend on the intensity in the bundle of rays on the other side of the examination area are acquired by means of a detector unit while the radiation source location is moving on the overall trajectory, and a CT image of the examination area is reconstructed from these measured values.

    Abstract translation: 本发明涉及一种计算机断层摄影方法，其中检查区域通过锥形束的光束通过。 一束光线来自在总体轨迹上围绕检查区域移动的辐射源位置。 整个轨迹由第一，闭合的部分轨迹，至少一个第二，闭合的部分轨迹和至少一个将第一和第二部分轨迹相互连接的第三部分轨迹组成。 在辐射源位置在整个轨迹上移动的同时，通过检测器单元获取取决于检查区另一侧的光线束强度的测量值，并且重建检查区域的CT图像 从这些测量值。

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