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    1.
    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.

    2.
    发明专利
    未知

    公开(公告)号：DE602005004413T2

    公开(公告)日：2009-01-15

    申请号：DE602005004413

    申请日：2005-07-04

    Applicant: PHILIPS INTELLECTUAL PROPERTY

    Inventor： FORTHMANN PETER ,  KOEHLER THOMAS

    IPC: G06T11/00

    Abstract: The invention relates to a method of computed tomography wherein a radiation source moves relative to an examination zone along a helical trajectory and wherein the movement involves a rotation around a rotational axis and a shifting parallel to the rotational axis. During the movement, a detector unit acquires real measured values. Fictitious measured values are determined from the real measured values by solving John's equation for a virtual movement of the radiation source along an intersection ellipse. The intersection ellipse intersects the helical trajectory at an intersection point and is the intersection of a virtual cylindrical surface, on which the helical trajectory is situated, with an intersection plane that is defined by a tangent vector of the helical trajectory at the intersection point and a vector that is oriented perpendicular to the rotational axis. Finally, an image of the examination zone is reconstructed using the real and fictitious measured values.

    5.
    发明专利
    未知

    公开(公告)号：DE60311249T2

    公开(公告)日：2007-10-18

    申请号：DE60311249

    申请日：2003-03-24

    Applicant: PHILIPS INTELLECTUAL PROPERTY

    Inventor： KATSCHER ULRICH ,  KOEHLER THOMAS ,  SCHMIDT THOMAS

    IPC: G01T1/161 ,  G06T11/00 ,  A61B5/055 ,  A61B6/03 ,  G06T3/00

    Abstract: A method for selective imaging of body structures includes acquiring first image data set by a first tomography method, acquiring a second image data set by a second tomography method which has a resolution which is higher than that of the first method, the image data of the first and the second image data set coinciding at least partly in space, reconstructing an image from the first image data set, and selecting the image data to be reconstructed from the first image data set using the second image data set. In order to achieve a higher imaging quality while using a low-resolution tomography method, image reconstruction of the image data selected from the first image data set at least one image region to be imaged is selected from the second image data set, and subsequently the image reconstruction is calculated from the image data of the first image data set which are situated in the selected image region.

    6.
    发明专利
    未知

    公开(公告)号：DE60311249D1

    公开(公告)日：2007-03-08

    申请号：DE60311249

    申请日：2003-03-24

    Applicant: PHILIPS INTELLECTUAL PROPERTY

    Inventor： KATSCHER ULRICH ,  KOEHLER THOMAS ,  SCHMIDT THOMAS

    IPC: G01T1/161 ,  G06T11/00 ,  A61B5/055 ,  A61B6/03 ,  G06T3/00

    Abstract: A method for selective imaging of body structures includes acquiring first image data set by a first tomography method, acquiring a second image data set by a second tomography method which has a resolution which is higher than that of the first method, the image data of the first and the second image data set coinciding at least partly in space, reconstructing an image from the first image data set, and selecting the image data to be reconstructed from the first image data set using the second image data set. In order to achieve a higher imaging quality while using a low-resolution tomography method, image reconstruction of the image data selected from the first image data set at least one image region to be imaged is selected from the second image data set, and subsequently the image reconstruction is calculated from the image data of the first image data set which are situated in the selected image region.

    8.
    发明专利
    未知

    公开(公告)号：DE10214254A1

    公开(公告)日：2003-10-16

    申请号：DE10214254

    申请日：2002-03-30

    Applicant: PHILIPS INTELLECTUAL PROPERTY

    Inventor： KATSCHER ULRICH ,  KOEHLER THOMAS ,  SCHMIDT THOMAS

    IPC: G01T1/161 ,  A61B5/055 ,  A61B6/03 ,  G06T3/00 ,  G06T11/00 ,  G06T5/50

    Abstract: A method for selective imaging of body structures includes acquiring first image data set by a first tomography method, acquiring a second image data set by a second tomography method which has a resolution which is higher than that of the first method, the image data of the first and the second image data set coinciding at least partly in space, reconstructing an image from the first image data set, and selecting the image data to be reconstructed from the first image data set using the second image data set. In order to achieve a higher imaging quality while using a low-resolution tomography method, image reconstruction of the image data selected from the first image data set at least one image region to be imaged is selected from the second image data set, and subsequently the image reconstruction is calculated from the image data of the first image data set which are situated in the selected image region.

    SPECTRAL IMAGING
    9.
    发明申请
    SPECTRAL IMAGING 审中-公开
    光谱成像

    公开(公告)号：WO2013128336A2

    公开(公告)日：2013-09-06

    申请号：PCT/IB2013051361

    申请日：2013-02-20

    Applicant: KONINKL PHILIPS NV ,  PHILIPS INTELLECTUAL PROPERTY

    Inventor： SCHAEFER DIRK ,  THRAN AXEL ,  KOEHLER THOMAS

    IPC: G01T1/29

    CPC classification number: A61B6/5205 ,  A61B5/0075 ,  A61B6/42 ,  G01T1/2008 ,  G01T1/2985

    Abstract: An imaging system includes radiation source (106) that emits radiation that traverses an examination region and a portion of a subject therein and a detector array (114) that detects radiation that traverses the examination region and the portion of the subject therein and generates a signal indicative thereof. A volume scan parameter recommender (120) recommends at least one spectral scan parameter value for a volume scan of the portion of the subject based on a spectral decomposition of first and second 2D projections acquired by the radiation source and detector array. The first and second 2D projections have different spectral characteristics. A console (122) employs the recommended at least one spectral scan parameter value to perform the volume scan of the portion of the subject.

    Abstract translation: 一种成像系统包括：辐射源（106），其发射穿过检查区域和其中的对象的一部分的辐射;以及检测器阵列（114），其检测穿过检查区域和其中的对象的该部分的辐射并且生成信号 指示其。 体积扫描参数推荐器（120）基于由辐射源和检测器阵列获取的第一和第二2D投影的频谱分解来推荐用于对象的该部分的体积扫描的至少一个频谱扫描参数值。 第一和第二2D投影具有不同的光谱特性。 控制台（122）采用推荐的至少一个光谱扫描参数值来执行对象的该部分的体积扫描。

    RADIATION-AND-DETECTION SYSTEM
    10.
    发明申请
    RADIATION-AND-DETECTION SYSTEM 审中-公开
    辐射与检测系统

    公开(公告)号：WO2008065578A3

    公开(公告)日：2008-09-12

    申请号：PCT/IB2007054726

    申请日：2007-11-21

    Applicant: KONINKL PHILIPS ELECTRONICS NV ,  PHILIPS INTELLECTUAL PROPERTY ,  KOEHLER THOMAS

    Inventor： KOEHLER THOMAS

    IPC: A61B6/03 ,  A61B6/00

    CPC classification number: A61B6/022 ,  A61B6/027 ,  A61B6/032 ,  A61B6/4028

    Abstract: The invention relates to radiation-and-detection system comprising a radiation unit (2) for alternately illuminating a detection unit (6) with radiation of a first emanating region (15) at first time intervals and with radiation of a second emanating region (16) at second time intervals, wherein first detection values are detected at the first time intervals and second detection values are detected at the second time intervals. The radiation-and- detection system is calibrated with respect to the influence of the radiation of the second emanating region (16) to the first detection values and with respect to the influence of the radiation of the first emanating region (15) to the second detection values.

    Abstract translation: 本发明涉及辐射和检测系统，其包括用于以第一时间间隔和第二发射区域（16）的辐射交替地照射具有第一发射区域（15）的辐射的检测单元（6）的辐射单元（2） ），其中在第一时间间隔检测第一检测值，并且以第二时间间隔检测第二检测值。 相对于第二发射区域（16）的辐射对第一检测值的影响并且关于第一发射区域（15）的辐射对第二发射区域（15）的影响，辐射和检测系统被校准 检测值。

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