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    Method of CT perfusion imaging and apparatus for implementing same
    4.
    发明授权
    Method of CT perfusion imaging and apparatus for implementing same 有权
    CT灌注成像方法及其实现方法

    公开(公告)号：US07933377B2

    公开(公告)日：2011-04-26

    申请号：US12477677

    申请日：2009-06-03

    申请人： Jiang Hsieh ,  Paul E. Licato ,  Akira Hagiwara ,  Mark Vincent Profio ,  Karen Ann Procknow ,  Saad Ahmed Sirohey ,  Srinivas Aluri ,  Olga Imas

    发明人： Jiang Hsieh ,  Paul E. Licato ,  Akira Hagiwara ,  Mark Vincent Profio ,  Karen Ann Procknow ,  Saad Ahmed Sirohey ,  Srinivas Aluri ,  Olga Imas

    IPC分类号： A61B6/00

    CPC分类号： A61B6/032 ,  A61B5/026 ,  A61B6/027 ,  A61B6/0457 ,  A61B6/4291 ,  G06T11/008

    摘要： A CT system includes a scintillator array having a first length in an axial direction of the CT system, the scintillator array includes a plurality of scintillator cells along the first length. The CT system includes a controller configured to repeatedly position a subject fore and aft along the axial direction and over a second length of the CT system, the second length greater than the first length, energize an x-ray source to emit x-rays toward the subject while the subject is being repeatedly positioned, and obtain non-uniform projection data of the subject from the scintillator array, the non-uniform projection data comprising the x-rays received from the x-ray source while the subject is repeatedly positioned. The CT system includes a computer programmed to reconstruct a plurality of temporally non-uniformly spaced images from the non-uniform projection data, interpolate the plurality of non-uniform images to form a plurality of temporally uniform images, and apply a perfusion map generation process to the plurality of temporally uniform images.

    摘要翻译： CT系统包括在CT系统的轴向上具有第一长度的闪烁体阵列，闪烁体阵列包括沿着第一长度的多个闪烁体单元。 CT系统包括控制器，该控制器被配置为沿着轴向方向和CT系统的第二长度反复地定位被检体的前后，第二长度大于第一长度，激励X射线源以向x射线发射X射线 在被摄体被重复定位的同时，从闪烁体阵列获得被摄体的不均匀的投影数据，该非均匀投影数据包括在被摄体重复定位时从x射线源接收的X射线。 CT系统包括被编程为从不均匀投影数据重构多个时间上不均匀的图像的计算机，内插多个非均匀图像以形成多个时间上均匀的图像，并且应用灌注图生成过程 到多个时间均匀的图像。

    METHOD OF CT PERFUSION IMAGING AND APPARATUS FOR IMPLEMENTING SAME
    5.
    发明申请
    METHOD OF CT PERFUSION IMAGING AND APPARATUS FOR IMPLEMENTING SAME 有权
    CT灌注成像方法及其实现方法

    公开(公告)号：US20100310040A1

    公开(公告)日：2010-12-09

    申请号：US12477677

    申请日：2009-06-03

    申请人： Jiang Hsieh ,  Paul E. Licato ,  Akira Hagiwara ,  Mark Vincent Profio ,  Karen Ann Procknow ,  Saad Ahmed Sirohey ,  Srinivas Aluri ,  Olga Imas

    发明人： Jiang Hsieh ,  Paul E. Licato ,  Akira Hagiwara ,  Mark Vincent Profio ,  Karen Ann Procknow ,  Saad Ahmed Sirohey ,  Srinivas Aluri ,  Olga Imas

    IPC分类号： H05G1/60 ,  G06K9/00

    CPC分类号： A61B6/032 ,  A61B5/026 ,  A61B6/027 ,  A61B6/0457 ,  A61B6/4291 ,  G06T11/008

    摘要： A CT system includes a scintillator array having a first length in an axial direction of the CT system, the scintillator array includes a plurality of scintillator cells along the first length. The CT system includes a controller configured to repeatedly position a subject fore and aft along the axial direction and over a second length of the CT system, the second length greater than the first length, energize an x-ray source to emit x-rays toward the subject while the subject is being repeatedly positioned, and obtain non-uniform projection data of the subject from the scintillator array, the non-uniform projection data comprising the x-rays received from the x-ray source while the subject is repeatedly positioned. The CT system includes a computer programmed to reconstruct a plurality of temporally non-uniformly spaced images from the non-uniform projection data, interpolate the plurality of non-uniform images to form a plurality of temporally uniform images, and apply a perfusion map generation process to the plurality of temporally uniform images.

    摘要翻译： CT系统包括在CT系统的轴向上具有第一长度的闪烁体阵列，闪烁体阵列包括沿着第一长度的多个闪烁体单元。 CT系统包括控制器，该控制器被配置为沿着轴向方向和CT系统的第二长度反复地定位被检体的前后，第二长度大于第一长度，激励X射线源以向x射线发射X射线 在被摄体被重复定位的同时，从闪烁体阵列获得被摄体的不均匀的投影数据，该非均匀投影数据包括在被摄体重复定位时从x射线源接收的X射线。 CT系统包括被编程为从不均匀投影数据重构多个时间上不均匀的图像的计算机，内插多个非均匀图像以形成多个时间上均匀的图像，并且应用灌注图生成过程 到多个时间均匀的图像。

    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

    申请人： Jiang Hsieh ,  Jianying Li ,  Melissa L. Vass ,  Xiangyang Tang ,  Darin Robert Okerlund ,  Bernice E. Hoppel ,  Kelly Ann Mohr ,  John Howard Londt

    发明人： Jiang Hsieh ,  Jianying Li ,  Melissa L. Vass ,  Xiangyang Tang ,  Darin Robert Okerlund ,  Bernice E. Hoppel ,  Kelly Ann Mohr ,  John Howard Londt

    IPC分类号： G01N23/083 ,  H05G1/62

    CPC分类号： A61B5/0464 ,  A61B6/027 ,  A61B6/032 ,  A61B6/503 ,  A61B6/5264 ,  A61B6/527 ,  A61B6/541

    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。

    Method and system for performing CT image reconstruction with motion artifact correction
    9.
    发明授权
    Method and system for performing CT image reconstruction with motion artifact correction 有权
    用运动伪影校正进行CT图像重建的方法和系统

    公开(公告)号：US07532702B2

    公开(公告)日：2009-05-12

    申请号：US11286924

    申请日：2005-11-23

    申请人： Jiang Hsieh ,  Darin Robert Okerlund ,  Mark Edward Woodford

    发明人： Jiang Hsieh ,  Darin Robert Okerlund ,  Mark Edward Woodford

    IPC分类号： A61B6/00

    CPC分类号： G01N23/046 ,  A61B6/027 ,  A61B6/032 ,  A61B6/4233 ,  A61B6/488 ,  A61B6/5264 ,  A61B6/541 ,  A61B6/583 ,  G01N2223/419 ,  G01N2223/612 ,  G01N2223/66

    摘要： In one embodiment, a method is provided for performing computed tomography (CT) imaging. The method includes obtaining EKG gating information from an object and obtaining attenuation measurements from the object utilizing a detector that is rotated in a scan plane around the object. The method further includes performing a first reconstruction based on a first portion of the attenuation measurements that are collected by a first region of the detector, where the first reconstruction is performed independent of the EKG gating information to obtain a first reconstruction data set. A second reconstruction is performed based on a second port of the attenuation measurements that are collected by a second region of the detector, where the second reconstruction is performed based on the EKG gating information to obtain a second reconstruction data set.

    摘要翻译： 在一个实施例中，提供了一种用于执行计算机断层摄影（CT）成像的方法。 该方法包括从对象获得EKG选通信息，并使用在围绕物体的扫描平面中旋转的检测器从对象获得衰减测量。 该方法还包括基于由检测器的第一区域收集的衰减测量的第一部分执行第一重建，其中执行第一重建独立于EKG选通信息以获得第一重建数据集。 基于由检测器的第二区域收集的衰减测量的第二端口执行第二重建，其中基于EKG门控信息执行第二重建以获得第二重构数据集。