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    SOURCE-DETECTOR ARRANGEMENT
    1.
    发明申请
    SOURCE-DETECTOR ARRANGEMENT 审中-公开
    源检测器布置

    公开(公告)号：WO2016075140A1

    公开(公告)日：2016-05-19

    申请号：PCT/EP2015/076213

    申请日：2015-11-10

    Applicant: KONINKLIJKE PHILIPS N.V.

    Inventor： KOEHLER, Thomas ,  ROESSL, Ewald ,  BEHLING, Rolf Karl Otto ,  NOËL, Peter Benjamin Theodor ,  PFEIFFER, Franz

    IPC: A61B6/00 ,  A61B6/03 ,  H01J35/10 ,  H01J35/14 ,  G02B5/18

    CPC classification number: A61B6/032 ,  A61B6/4035 ,  A61B6/4085 ,  A61B6/484 ,  G02B5/1866 ,  G21K2207/005 ,  H01J35/14 ,  H01J2235/082 ,  H01J2235/086

    Abstract: The invention relates to a source-detector arrangement (11) of an X-ray apparatus (10) for grating based phase contrast computed tomography. The source-detector arrangement comprises an X-ray source (12) adapted for rotational movement around a rotation axis (R) relative to an object (140) and adapted for emittance of an X-ray beam of coherent or quasi-coherent radiation in a line pattern (21); and an X-ray detection system (16) including a first grating element (24) and a second grating element (26) and a detector element (6); wherein the line pattern of the radiation and a grating direction of the grating elements are arranged orthogonal to the rotation axis; and wherein the first grating element has a first grating pitch varied dependent on a cone angle (β) of the X-ray beam and/or the second grating element has a second grating pitch varied dependent on the cone angle of the X-ray beam.

    Abstract translation: 本发明涉及一种用于基于光栅的相位计算机断层摄影的X射线设备（10）的源 - 检测器装置（11）。 源检测器装置包括适于围绕相对于物体（140）旋转轴线（R）旋转运动的X射线源（12），并且适于使相干或准相干辐射的X射线束的发射 线图案（21）; 和包括第一光栅元件（24）和第二光栅元件（26）和检测器元件（6）的X射线检测系统（16）。 其中所述辐射的线图案和所述光栅元件的光栅方向布置成与所述旋转轴线正交; 并且其中所述第一光栅元件具有根据所述X射线束的锥角（β）而变化的第一光栅间距和/或所述第二光栅元件具有根据所述X射线束的锥角而变化的第二光栅间距 。

    ROBUST RECONSTRUCTION FOR DARK-FIELD AND PHASE CONTRAST CT
    4.
    发明申请
    ROBUST RECONSTRUCTION FOR DARK-FIELD AND PHASE CONTRAST CT 审中-公开
    用于暗场和相位对比CT的稳健重建

    公开(公告)号：WO2016207423A1

    公开(公告)日：2016-12-29

    申请号：PCT/EP2016/064799

    申请日：2016-06-27

    Applicant: KONINKLIJKE PHILIPS N.V.

    Inventor： KOEHLER, Thomas ,  BRENDEL, Bernhard Johannes ,  NOEL, Peter ,  PFEIFFER, Franz ,  VON TEUFFENBACH, Maximilian

    IPC: G06T11/00

    CPC classification number: G06T11/006 ,  A61B6/4208 ,  A61B6/5205 ,  G06T2211/424

    Abstract: A system and related method for signal processing. Interferometric projection data reconstructed into one or more images for a spatial distribution of a physical property of an imaged object. The interferometric projection data is derived from signals acquired by an X-ray detector (D), said signals caused by X-ray radiation after interaction of said X-ray radiation with an interferometer and with the object (OB) to be imaged, said interferometer (IF) having a reference phase. A reconstructor (RECON) reconstructs for the image(s) by fitting said data to a signal model by adapting fitting variables, said fitting variables including i) one or more imaging variables for the one or more images and ii), in addition to said one or more imaging variables, a dedicated phase variable for a fluctuation of said reference phase.

    Abstract translation: 一种用于信号处理的系统及相关方法。 干涉测量投影数据被重建成一个或多个图像，用于成像对象的物理属性的空间分布。 所述干涉投影数据是从由X射线检测器（D）获取的信号导出的，所述信号由所述X射线辐射与所述X射线辐射与干涉仪相互作用并与要成像的物体（OB）之间的X射线辐射引起，所述 干涉仪（IF）具有参考相位。 重建器（RECON）通过将所述数据拟合到信号模型中来重构图像，所述拟合变量包括i）一个或多个图像的一个或多个成像变量，以及ii）除了所述 一个或多个成像变量，用于所述参考相位的波动的专用相位变量。

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