Systems and methods for correcting a positron emission tomography emission image
    8.
    发明授权
    Systems and methods for correcting a positron emission tomography emission image 失效
    用于校正正电子发射断层摄影发射图像的系统和方法

    公开(公告)号:US07507968B2

    公开(公告)日:2009-03-24

    申请号:US10462914

    申请日:2003-06-17

    IPC分类号: G01T1/161 G01N23/00 G06K9/00

    摘要: A method for correcting a positron emission tomography (PET) emission image is described. The method includes obtaining a PET emission sinogram of an object, obtaining a computed tomography (CT) image for a scanned portion of the object, the object having a truncated portion outside a field of view (FOV) of a CT image, determining a correction set of CT data based on a measured set of CT data within the CT sinogram, generating modified attenuation correction factors from the measured and correction sets of CT data, and correcting the PET sinogram using the modified attenuation correction factors.

    摘要翻译: 描述了用于校正正电子发射断层摄影(PET)发射图像的方法。 该方法包括获得物体的PET发射正弦图,获得被扫描的物体的扫描部分的计算机断层摄影(CT)图像,该物体在CT图像的视场(FOV)之外具有截断部分,确定校正 基于CT正弦图内的CT数据的一组CT数据,从CT数据的测量和校正集中产生修正的衰减校正因子,并使用修正的衰减校正因子校正PET正弦图。