利索-全球专利检索

  1. 登录
  2. 注册

搜索结果

4 条记录 (耗时 0.008 秒)

    Nuclear imaging
    2.
    发明公开
    Nuclear imaging 失效
    核图像再现装置

    公开(公告)号：EP0863410A3

    公开(公告)日：2001-09-19

    申请号：EP98301287.3

    申请日：1998-02-19

    申请人： Marconi Medical Systems, Inc.

    发明人： Difilippo, Frank P. ,  Heller, Mark H.

    IPC分类号： G01T1/164

    CPC分类号： G01T1/2985 ,  G01T1/172

    摘要： A camera for use in coincidence imaging includes detectors (10a, 10b) disposed about an examination region (12). Coincidence logic (]4) determines whether gamma rays are detected by each of the detectors (10a, 10b) occur within a specified time interval. If so, the energy and positions of the detected events are determined. Energy discrimination circuitry (20a, 20b) associated with each detector (10a, 10b) determines if the detected events fall within a specified energy window. A list mode processor (22) generates a list of coincidence events. A rebinning processor (24) rebins the events, and a weight processor (26) weights each coincidence event based on the energy of the detected gamma rays.

    Positron emission imaging
    3.
    发明公开
    Positron emission imaging 有权
    正电子发射成像

    公开(公告)号：EP0933652A3

    公开(公告)日：2001-08-22

    申请号：EP99300676.6

    申请日：1999-01-29

    申请人： Marconi Medical Systems, Inc.

    发明人： Difilippo, Frank P.

    IPC分类号： G01T1/29 ,  G01T1/164

    CPC分类号： G01T1/2985 ,  A61B6/037

    摘要： An imaging apparatus includes a plurality of detector assemblies 32a-c disposed for rotation about an imaging region. The detector assemblies may be adjusted between at least two relative angular orientations about the imaging region. The relative angular orientations are selected based on the size of an object 16 within the imaging region. The centre of the transverse fields of view of the detectors may be offset from the axis of rotation. Gamma radiation generated by positron annihilation events is detected and used to generate tomographic images.

    摘要翻译： 成像设备包括被设置用于围绕成像区域旋转的多个检测器组件32a-c。 检测器组件可以在围绕成像区域的至少两个相对角度取向之间进行调整。 基于成像区域内的对象16的大小来选择相对角度取向。 检测器的横向视场的中心可以偏离旋转轴线。 由正电子湮灭事件产生的伽玛辐射被检测并被用于产生层析图像。