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11 条记录 (耗时 0.014 秒)

    Technique for reconstructing PET scan images
    1.
    发明授权
    Technique for reconstructing PET scan images 有权
    PET扫描图像重建技术

    公开(公告)号：US07381959B2

    公开(公告)日：2008-06-03

    申请号：US11205067

    申请日：2005-08-17

    申请人： Ravindra Mohan Manjeshwar ,  Floribertus Philippus Martinus Heukensfeldt Jansen ,  Charles William Stearns

    发明人： Ravindra Mohan Manjeshwar ,  Floribertus Philippus Martinus Heukensfeldt Jansen ,  Charles William Stearns

    IPC分类号： G01T1/163

    CPC分类号： G01T1/2985

    摘要： The invention is directed to a technique for reconstructing PET scan images. According to one embodiment, the invention relates to a method for reconstructing PET scan images. The method comprises: detecting a plurality of coincidence events in a PET scanner; storing data associated with the plurality of coincidence events in a chronological list based on a detection time for each of the plurality of coincidence events; generating correction data based on scatter coincidence events and random coincidence events in the plurality of coincidence events; and reconstructing one or more PET scan images based at least in part on the chronological list of data and the correction data.

    摘要翻译： 本发明涉及一种重建PET扫描图像的技术。 根据一个实施例，本发明涉及一种重建PET扫描图像的方法。 该方法包括：在PET扫描器中检测多个符合事件; 基于多个重合事件中的每一个的检测时间，将与所述多个符合事件相关联的数据存储在时序列表中; 基于所述多个重合事件中的分散符合事件和随机符合事件生成校正数据; 以及至少部分地基于时间顺序的数据列表和校正数据重建一个或多个PET扫描图像。

    Iterative reconstruction of tomographic image data method and system
    3.
    发明授权
    Iterative reconstruction of tomographic image data method and system 有权
    断层图像数据方法和系统的迭代重建

    公开(公告)号：US07680240B2

    公开(公告)日：2010-03-16

    申请号：US11731612

    申请日：2007-03-30

    申请人： Ravindra Mohan Manjeshwar ,  Floribertus Philippus Martinus Heukensfeldt Jansen ,  James William Hugg ,  Charles William Stearns

    发明人： Ravindra Mohan Manjeshwar ,  Floribertus Philippus Martinus Heukensfeldt Jansen ,  James William Hugg ,  Charles William Stearns

    IPC分类号： A61B6/00

    CPC分类号： A61B6/032 ,  A61B6/037 ,  A61B6/469 ,  G06T11/006 ,  G06T2211/424 ,  G06T2211/432

    摘要： Methods for performing image reconstruction that include deriving background projection data for an area outside a targeted field of view of a tomographic image, and reconstructing the tomographic image of the targeted field of view, wherein the background projection data is used in the reconstruction. Methods for selecting a reconstruction methodology that include determining a number of pixels in a reconstructed image for a first reconstruction methodology, determining a number of pixels in a reconstructed image for a second reconstruction methodology, comparing the number of pixels for the first reconstruction methodology and the number of pixels for the second reconstruction methodology, and selecting the reconstruction methodology for image reconstruction based on the comparison of the number of pixels. Imaging systems implementing these methods are also provided.

    摘要翻译： 用于执行图像重建的方法，包括导出用于断层图像的目标视场外的区域的背景投影数据，以及重构所述目标视场的断层图像，其中所述背景投影数据用于所述重建。 用于选择重建方法的方法，所述重建方法包括确定用于第一重建方法的重建图像中的像素数量，确定用于第二重建方法的重建图像中的像素数量，将第一重建方法的像素数与 用于第二重建方法的像素数量，以及基于像素数目的比较来选择用于图像重建的重建方法。 还提供了实现这些方法的成像系统。

    Reduced dead time radiation detection system
    5.
    发明授权
    Reduced dead time radiation detection system 失效
    降低死区时间辐射检测系统

    公开(公告)号：US5932878A

    公开(公告)日：1999-08-03

    申请号：US853769

    申请日：1997-05-09

    申请人： Floribertus Philippus Martinus Heukensfeldt Jansen ,  Daniel Robert Stafford Taylor

    发明人： Floribertus Philippus Martinus Heukensfeldt Jansen ,  Daniel Robert Stafford Taylor

    IPC分类号： G01T1/164

    CPC分类号： G01T1/1648 ,  G01T1/1642 ,  A61B6/4258

    摘要： A nuclear imaging radiation system including a gamma camera which, in one embodiment, includes a scintillation crystal, a collimator and an array of photomultiplier tubes, is described. The collimator is positioned adjacent a face of the crystal, and defines a field of view. The array of photomultiplier tubes is positioned adjacent an opposite face of the crystal, and selected tubes outside the field of view are disabled so that light events outside of the field of view are not processed.

    摘要翻译： 描述了包括伽马照相机的核成像辐射系统，其在一个实施例中包括闪烁晶体，准直器和光电倍增管阵列。 准直器定位在晶体的表面附近，并且定义视野。 光电倍增管的阵列位于晶体的相对面附近，并且视场外的选定的管被禁用，使得视场外的光事件不被处理。

    Gamma camera collimator
    6.
    发明授权
    Gamma camera collimator 失效
    伽玛相机准直仪

    公开(公告)号：US5929447A

    公开(公告)日：1999-07-27

    申请号：US853279

    申请日：1997-05-09

    申请人： Peter Scott Crandall ,  Daniel Robert Stafford Taylor ,  Floribertus Philippus Martinus Heukensfeldt Jansen

    发明人： Peter Scott Crandall ,  Daniel Robert Stafford Taylor ,  Floribertus Philippus Martinus Heukensfeldt Jansen

    IPC分类号： G01T1/164

    CPC分类号： G01T1/1648

    摘要： A reduced field of view collimator for a nuclear imaging gamma camera is described. In one form, the collimator includes a gamma ray attenuating plate, several core plates, and a ramp member. The gamma ray attenuating plate is sized to substantially cover a scintillation crystal face, and includes an opening. The core plates extend from the attenuating plate at a periphery of the plate opening and define an outer periphery of a collimator core. The ramp member includes a ramp having a sloped surface, and is formed of gamma ray attenuating material. The ramp member is secured adjacent to at least one of the core plates so that the sloped surface extends substantially angularly with respect to the attenuating plate and the core plate.

    摘要翻译： 描述了用于核成像伽马照相机的缩小视野准直器。 在一种形式中，准直器包括伽马射线衰减板，多个芯板和斜坡构件。 伽马射线衰减板的大小被确定为基本上覆盖闪烁晶体面，并且包括开口。 芯板在板开口的周边处从衰减板延伸并且限定准直器芯的外周。 斜坡构件包括具有倾斜表面的斜面，并且由伽马射线衰减材料形成。 斜面构件固定在至少一个芯板附近，使得倾斜表面相对于衰减板和芯板基本成角度地延伸。