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    Method and system of CT data correction
    1.
    发明授权
    Method and system of CT data correction 有权
    CT数据校正方法与系统

    公开(公告)号：US07382853B2

    公开(公告)日：2008-06-03

    申请号：US10904736

    申请日：2004-11-24

    申请人： Jerome S. Arenson ,  David Ruimi ,  Lev Greenberg ,  Yanfeng Du

    发明人： Jerome S. Arenson ,  David Ruimi ,  Lev Greenberg ,  Yanfeng Du

    IPC分类号： H05G1/26

    CPC分类号： G01T1/1644 ,  A61B6/027 ,  A61B6/032 ,  A61B6/4241 ,  A61B6/482 ,  A61B6/583 ,  G01T1/1647 ,  G06T5/002 ,  G06T5/20 ,  G06T2207/10081 ,  G06T2207/30004 ,  G06T2207/30112 ,  Y10S378/901

    摘要： An adaptive CT data acquisition system and technique is presented whereby radiation emitted for CT data acquisition is dynamically controlled to limit exposure to those detectors of a CT detector assembly that may be particularly susceptible to saturation during a given data acquisition. The data acquisition technique recognizes that for a given subject size and position that pre-subject filtering and collimating of a radiation beam may be insufficient to completely prevent detector saturation. Therefore, the present invention includes implementation of a number of CT data correction techniques for correcting otherwise unusable data of a saturated CT detector. These data correction techniques include a nearest neighbor correction, off-centered phantom correction, off-centered synthetic data correction, scout data correction, planar radiogram correction, and a number of others. The invention is applicable with energy discriminating CT systems as well as with conventional CT systems and other multi-energy CT systems, such as dual kVp-based systems.

    摘要翻译： 提出了一种自适应CT数据采集系统和技术，其中动态地控制用于CT数据采集的辐射，以限制在给定数据采集期间可能特别容易饱和的CT检测器组件的那些检测器的暴露。 数据采集​​技术认识到，对于给定的主体大小和位置，预辐射滤波和辐射束的准直可能不足以完全防止检测器饱和。 因此，本发明包括实现用于校正饱和CT检测器的其他不可用数据的多个CT数据校正技术。 这些数据校正技术包括最近邻校正，偏心幻像校正，偏心合成数据校正，侦察数据校正，平面放射线图校正以及其他数目。 本发明适用于能量识别CT系统以及常规CT系统和其他多能CT系统，例如基于双kVp的系统。

    Method and system of CT data correction
    2.
    发明授权
    Method and system of CT data correction 有权
    CT数据校正方法与系统

    公开(公告)号：US07260172B2

    公开(公告)日：2007-08-21

    申请号：US11627072

    申请日：2007-01-25

    申请人： Jerome Stephen Arenson ,  Evgeny Drapkin ,  Yanfeng Du ,  Lev Greenberg ,  Oded Meirav ,  David Ruimi ,  John Eric Tkaczyk ,  Xiaoye Wu

    发明人： Jerome Stephen Arenson ,  Evgeny Drapkin ,  Yanfeng Du ,  Lev Greenberg ,  Oded Meirav ,  David Ruimi ,  John Eric Tkaczyk ,  Xiaoye Wu

    IPC分类号： G01N23/083

    CPC分类号： G01T1/1644 ,  A61B6/027 ,  A61B6/032 ,  A61B6/4241 ,  A61B6/482 ,  A61B6/583 ,  G01T1/1647 ,  G06T5/002 ,  G06T5/20 ,  G06T2207/10081 ,  G06T2207/30004 ,  G06T2207/30112 ,  Y10S378/901

    摘要： An adaptive CT data acquisition system and technique is presented whereby radiation emitted for CT data acquisition is dynamically controlled to limit exposure to those detectors of a CT detector assembly that may be particularly susceptible to saturation during a given data acquisition. The data acquisition technique recognizes that for a given subject size and position that pre-subject filtering and collimating of a radiation beam may be insufficient to completely prevent detector saturation. Therefore, the present invention includes implementation of a number of CT data correction techniques for correcting otherwise unusable data of a saturated CT detector. These data correction techniques include a nearest neighbor correction, off-centered phantom correction, off-centered synthetic data correction, scout data correction, planar radiogram correction, and a number of others. The invention is applicable with energy discriminating CT systems as well as with conventional CT systems and other multi-energy CT systems, such as dual kVp-based systems.

    摘要翻译： 提出了一种自适应CT数据采集系统和技术，其中动态地控制用于CT数据采集的辐射，以限制在给定数据采集期间可能特别容易饱和的CT检测器组件的那些检测器的暴露。 数据采集​​技术认识到，对于给定的主体大小和位置，预辐射滤波和辐射束的准直可能不足以完全防止检测器饱和。 因此，本发明包括实现用于校正饱和CT检测器的其他不可用数据的多个CT数据校正技术。 这些数据校正技术包括最近邻校正，偏心幻像校正，偏心合成数据校正，侦察数据校正，平面放射线图校正以及其他数目。 本发明适用于能量识别CT系统以及常规CT系统和其他多能CT系统，例如基于双kVp的系统。

    X-RAY FLUX MANAGEMENT DEVICE
    4.
    发明申请
    X-RAY FLUX MANAGEMENT DEVICE 有权
    X射线管理设备

    公开(公告)号：US20100195802A1

    公开(公告)日：2010-08-05

    申请号：US12755814

    申请日：2010-04-07

    申请人： Jerome S. Arenson ,  David Ruimi ,  Oded Meirav ,  Robert H. Armstrong

    发明人： Jerome S. Arenson ,  David Ruimi ,  Oded Meirav ,  Robert H. Armstrong

    IPC分类号： G21K3/00 ,  H01S4/00

    CPC分类号： G21K1/04 ,  G21K1/043 ,  Y10T29/49002

    摘要： The invention is directed to an x-ray flux management device that adaptively attenuates an x-ray beam to limit the incident flux reaching a subject and radiographic detectors in potentially high-flux areas while not affecting the incident flux and detector measurements in low-flux regions. While the invention is particularly well-suited for CT, the invention is also applicable with other x-ray imaging systems. In addition to reducing the required detector system dynamic range, the present invention provides an added advantage of reducing radiation dose.

    摘要翻译： 本发明涉及一种x射线通量管理装置，其自适应地衰减X射线束以限制到达对象的入射通量和潜在的高通量区域中的射线照相检测器，同时不影响入射通量和低通量中的检测器测量 地区。 尽管本发明特别适用于CT，但是本发明也适用于其它X射线成像系统。 除了减少所需的检测器系统动态范围之外，本发明还提供了降低辐射剂量的附加优点。

    METHOD AND SYSTEM OF CT DATA CORRECTION
    7.
    发明申请
    METHOD AND SYSTEM OF CT DATA CORRECTION 有权
    CT数据校正方法与系统

    公开(公告)号：US20060109950A1

    公开(公告)日：2006-05-25

    申请号：US10904736

    申请日：2004-11-24

    申请人： Jerome Arenson ,  John Tkaczyk ,  David Ruimi ,  Oded Meirav ,  Evgeny Drapkin ,  Dmitry Samsonov ,  Lev Greenberg ,  Bruno De Man ,  Samit Basu ,  Xiaoye Wu ,  Yangeng Du

    发明人： Jerome Arenson ,  John Tkaczyk ,  David Ruimi ,  Oded Meirav ,  Evgeny Drapkin ,  Dmitry Samsonov ,  Lev Greenberg ,  Bruno De Man ,  Samit Basu ,  Xiaoye Wu ,  Yangeng Du

    IPC分类号： H05G1/60 ,  A61B6/00 ,  G01N23/00 ,  G21K1/12

    CPC分类号： G01T1/1644 ,  A61B6/027 ,  A61B6/032 ,  A61B6/4241 ,  A61B6/482 ,  A61B6/583 ,  G01T1/1647 ,  G06T5/002 ,  G06T5/20 ,  G06T2207/10081 ,  G06T2207/30004 ,  G06T2207/30112 ,  Y10S378/901

    摘要： An adaptive CT data acquisition system and technique is presented whereby radiation emitted for CT data acquisition is dynamically controlled to limit exposure to those detectors of a CT detector assembly that may be particularly susceptible to saturation during a given data acquisition. The data acquisition technique recognizes that for a given subject size and position that pre-subject filtering and collimating of a radiation beam may be insufficient to completely prevent detector saturation. Therefore, the present invention includes implementation of a number of CT data correction techniques for correcting otherwise unusable data of a saturated CT detector. These data correction techniques include a nearest neighbor correction, off-centered phantom correction, off-centered synthetic data correction, scout data correction, planar radiogram correction, and a number of others. The invention is applicable with energy discriminating CT systems as well as with conventional CT systems and other multi-energy CT systems, such as dual kVp-based systems.

    摘要翻译： 提出了一种自适应CT数据采集系统和技术，其中动态地控制用于CT数据采集的辐射，以限制在给定数据采集期间可能特别容易饱和的CT检测器组件的那些检测器的暴露。 数据采集​​技术认识到，对于给定的主体大小和位置，预辐射滤波和辐射束的准直可能不足以完全防止检测器饱和。 因此，本发明包括实现用于校正饱和CT检测器的其他不可用数据的多个CT数据校正技术。 这些数据校正技术包括最近邻校正，偏心幻像校正，偏心合成数据校正，侦察数据校正，平面放射线图校正以及其他数目。 本发明适用于能量识别CT系统以及常规CT系统和其他多能CT系统，例如基于双kVp的系统。

    Helical scanner with variably oriented scan axis
    10.
    发明授权
    Helical scanner with variably oriented scan axis 失效
    具有可变方向扫描轴的螺旋扫描仪

    公开(公告)号：US06324246B1

    公开(公告)日：2001-11-27

    申请号：US09367771

    申请日：1999-11-22

    申请人： David Ruimi

    发明人： David Ruimi

    IPC分类号： A61B603

    CPC分类号： A61B6/032 ,  A61B6/027 ,  Y10S378/901

    摘要： A method for reconstructing images of a subject in a variable-angle helical-scan CT scanner including an X-ray tube, a detector array, and a bed, the method comprising: angling the translation axis and the rotation axis at an acute angle relative to one another; rotating the X-ray tube about the rotation axis while translating the bed along the translation axis through a plane of rotation of the tube, whereby the X-ray tube describes a helical path relative to the subject; acquiring first and second views of the subject at the same effective rotational angle about the axis of rotation, said views comprising X-ray attenuation data received from elements of the array; producing a planar corrected image slice by interpolation of the data in different views, wherein the data is generated by non-corresponding elements in the different views; and repeating the above steps at respective positions at a plurality of rotational angles of the X-ray tube.

    摘要翻译： 一种用于重建包括X射线管，检测器阵列和床的可变角度螺旋扫描CT扫描仪中的被检体的图像的方法，所述方法包括：将平移轴和旋转轴以锐角相对角度 彼此; 使所述X射线管绕所述旋转轴旋转，同时沿着所述平移轴平移所述床沿所述管的旋转平面，由此所述X射线管描述相对于所述对象的螺旋路径; 以相对于旋转轴线的相同有效旋转角度获取对象的第一和第二视图，所述视图包括从阵列的元件接收的X射线衰减数据; 通过不同视图中的数据的内插产生平面校正图像切片，其中数据由不同视图中的非对应元素生成; 并且在X射线管的多个旋转角度的各个位置重复上述步骤。