Step-and-shoot cardiac CT imaging
    2.
    发明授权
    Step-and-shoot cardiac CT imaging 有权
    分步心脏CT成像

    公开(公告)号:US07570733B2

    公开(公告)日:2009-08-04

    申请号:US11149993

    申请日:2005-06-10

    IPC分类号: A61B6/00

    摘要: The present invention is directed to a method and system of blending data acquired from neighboring partial-scans. Data is acquired from an imaging volume in a series of fractional or partial-scans. Each partial-scan samples a fraction of the imaging volume. During reconstruction, data from the partial-scans are combined to compensate for the unsampled portion of the imaging volume that is experienced in any partial-scan alone.

    摘要翻译: 本发明涉及一种混合从相邻部分扫描获得的数据的方法和系统。 在一系列分数或部分扫描中从成像体积获取数据。 每个部分扫描采集成像体积的一部分。 在重构期间,来自部分扫描的数据被组合以补偿仅在任何部分扫描中经历的成像体积的未采样部分。

    Method and apparatus for reducing cone beam artifacts using spatially varying weighting functions
    3.
    发明申请
    Method and apparatus for reducing cone beam artifacts using spatially varying weighting functions 有权
    使用空间变化的加权函数减少锥束伪像的方法和装置

    公开(公告)号:US20070140535A1

    公开(公告)日:2007-06-21

    申请号:US11305929

    申请日:2005-12-19

    IPC分类号: G06K9/00

    摘要: A method for combining images acquired using helical half-scan imaging comprises identifying an image plane within an overlap region comprising data from first and second view streams representative of first and second cycles of acquired image data. The image plane comprises the same anatomical structure. First and second weighting functions are calculated for first and second images based on first and second tube positions of an x-ray tube. The first and second images correspond to the image plane and are from the first and second view streams, respectively. The first and second tube positions also correspond to the image plane. A weighted image is then formed based on the first and second weighting functions and the first and second images.

    摘要翻译: 一种用于组合使用螺旋半扫描成像获取的图像的方法包括在包括表示所获取的图像数据的第一和第二周期的第一和第二视图流的数据的重叠区域内识别图像平面。 图像平面包括相同的解剖结构。 基于X射线管的第一和第二管位置对第一和第二图像计算第一和第二加权函数。 第一和第二图像分别对应于图像平面并且分别来自第一和第二视图流。 第一和第二管位置也对应于图像平面。 然后基于第一和第二加权函数以及第一和第二图像形成加权图像。

    Method and apparatus for reducing cone beam artifacts using spatially varying weighting functions
    6.
    发明授权
    Method and apparatus for reducing cone beam artifacts using spatially varying weighting functions 有权
    使用空间变化的加权函数减少锥束伪像的方法和装置

    公开(公告)号:US07613275B2

    公开(公告)日:2009-11-03

    申请号:US11305929

    申请日:2005-12-19

    IPC分类号: A61B6/00

    摘要: A method for combining images acquired using helical half-scan imaging comprises identifying an image plane within an overlap region comprising data from first and second view streams representative of first and second cycles of acquired image data. The image plane comprises the same anatomical structure. First and second weighting functions are calculated for first and second images based on first and second tube positions of an x-ray tube. The first and second images correspond to the image plane and are from the first and second view streams, respectively. The first and second tube positions also correspond to the image plane. A weighted image is then formed based on the first and second weighting functions and the first and second images.

    摘要翻译: 一种用于组合使用螺旋半扫描成像获取的图像的方法包括在包括表示所获取的图像数据的第一和第二周期的第一和第二视图流的数据的重叠区域内识别图像平面。 图像平面包括相同的解剖结构。 基于X射线管的第一和第二管位置对第一和第二图像计算第一和第二加权函数。 第一和第二图像分别对应于图像平面并且分别来自第一和第二视图流。 第一和第二管位置也对应于图像平面。 然后基于第一和第二加权函数以及第一和第二图像形成加权图像。

    Step-and-shoot cardiac CT imaging
    7.
    发明授权
    Step-and-shoot cardiac CT imaging 有权
    分步心脏CT成像

    公开(公告)号:US07558363B2

    公开(公告)日:2009-07-07

    申请号:US11941219

    申请日:2007-11-16

    IPC分类号: G01N23/083 H05G1/62

    摘要: A CT imaging system includes a gantry and a table in a movable relationship with the gantry. The CT imaging system also includes a controller configured to control relative movement between a subject disposed on the table and the gantry from a first data acquisition position to a second data acquisition position. The controller is also configured to determine a total scan time based on a first time for acquiring imaging data at the first data acquisition position and a second time for transitioning from the first data acquisition position to the second data acquisition position. The controller is also configured to disable data acquisition in an immediately subsequent cardiac cycle and re-enable data acquisition in the cardiac cycle following the immediately subsequent cardiac cycle if the total scan time exceeds one cardiac cycle of the subject. A method of CT imaging is also disclosed.

    摘要翻译: CT成像系统包括台架和与台架可动关系的台。 CT成像系统还包括控制器,其被配置为控制设置在桌子上的物体与从第一数据采集位置到第二数据采集位置的台架之间的相对运动。 控制器还被配置为基于第一时间来确定用于在第一数据获取位置处获取成像数据的总扫描时间,以及用于从第一数据获取位置转换到第二数据获取位置的第二时间。 控制器还被配置为在紧随其后的心动周期中禁用数据采集,并且如果总扫描时间超过对象的一个​​心动周期,则在紧随其后的心动周期之后重新启用心动周期中的数据采集。 还公开了CT成像的方法。

    STEP-AND-SHOOT CARDIAC CT IMAGING
    8.
    发明申请
    STEP-AND-SHOOT CARDIAC CT IMAGING 有权
    STEP-AND-SHOOT CARDIAC CT成像

    公开(公告)号:US20080063137A1

    公开(公告)日:2008-03-13

    申请号:US11941219

    申请日:2007-11-16

    IPC分类号: A61B6/12

    摘要: A CT imaging system includes a gantry and a table in a movable relationship with the gantry. The CT imaging system also includes a controller configured to control relative movement between a subject disposed on the table and the gantry from a first data acquisition position to a second data acquisition position. The controller is also configured to determine a total scan time based on a first time for acquiring imaging data at the first data acquisition position and a second time for transitioning from the first data acquisition position to the second data acquisition position. The controller is also configured to disable data acquisition in an immediately subsequent cardiac cycle and re-enable data acquisition in the cardiac cycle following the immediately subsequent cardiac cycle if the total scan time exceeds one cardiac cycle of the subject. A method of CT imaging is also disclosed.

    摘要翻译: CT成像系统包括台架和与台架可动关系的台。 CT成像系统还包括控制器,其被配置为控制设置在桌子上的物体与从第一数据采集位置到第二数据采集位置的台架之间的相对运动。 控制器还被配置为基于第一时间来确定用于在第一数据获取位置处获取成像数据的总扫描时间,以及用于从第一数据获取位置转换到第二数据获取位置的第二时间。 控制器还被配置为在紧随其后的心动周期中禁用数据采集,并且如果总扫描时间超过对象的一个​​心动周期,则在紧随其后的心动周期之后重新启用心动周期中的数据采集。 还公开了CT成像的方法。