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353 条记录 (耗时 0.032 秒)

    METHOD AND APPARATUS OF RADIOGRAPHIC IMAGING WITH AN ENERGY BEAM TAILORED FOR A SUBJECT TO BE SCANNED
    32.
    发明申请
    METHOD AND APPARATUS OF RADIOGRAPHIC IMAGING WITH AN ENERGY BEAM TAILORED FOR A SUBJECT TO BE SCANNED 有权
    用能够被扫描的能量束进行放射成像的方法和装置

    公开(公告)号：US20060198496A1

    公开(公告)日：2006-09-07

    申请号：US11419851

    申请日：2006-05-23

    申请人： Thomas Toth ,  Eric Tkaczyk ,  Jiang Hsieh

    发明人： Thomas Toth ,  Eric Tkaczyk ,  Jiang Hsieh

    IPC分类号： G21K3/00

    CPC分类号： A61B6/4042 ,  A61B6/032 ,  A61B6/4035 ,  A61B6/4488 ,  G01T1/2985 ,  G21K1/04 ,  G21K1/10

    摘要： A method and apparatus for tailoring the profile of an x-ray beam for radiographic imaging for a specific subject is disclosed. The invention includes a filter assembly having a pair of filters, each of which may be dynamically controlled by a motor assembly during data acquisition. The filters are positionable in the x-ray beam so as to shape the intensity profile of the x-ray beam. In one exemplary embodiment, the filters are dynamically positioned during CT data acquisition based on the shape of the subject. A method of determining the shape of the subject prior to CT data acquisition is also disclosed.

    摘要翻译： 公开了一种用于定制用于特定对象的X射线成像的X射线束的轮廓的方法和装置。 本发明包括具有一对滤波器的滤波器组件，每个滤波器可以在数据采集期间由电机组件动态地控制。 过滤器可以定位在x射线束中，以便形成x射线束的强度分布。 在一个示例性实施例中，基于对象的形状，在CT数据采集期间，滤波器被动态地定位。 还公开了在CT数据采集之前确定对象的形状的方法。

    Automated optimization of medical 3D visualizations
    33.
    发明授权
    Automated optimization of medical 3D visualizations 有权
    医疗3D可视化的自动优化

    公开(公告)号：US07092558B2

    公开(公告)日：2006-08-15

    申请号：US10064762

    申请日：2002-08-14

    申请人： Jiang Hsieh

    发明人： Jiang Hsieh

    IPC分类号： G06K9/00

    CPC分类号： G06T15/06 ,  G06T15/40

    摘要： A method of automatically optimizing medical three-dimensional visualizations is providing, including isolating a plurality of anatomical structures within the medical three-dimensional visualization (40), calculating the number of ray intersects, that intersect more than one of the plurality of anatomical structures, for a plurality of casting angles (42), selecting an optimum casting angle that minimizes said ray intersects from one of said plurality casting angles (44), and displaying the optimized medical three-dimensional visualization from said optimized casting angle (48).

    摘要翻译： 自动优化医学三维可视化的方法是提供包括隔离医疗三维可视化（40）内的多个解剖结构，计算与多个解剖结构之一相交的多个光线相交的数量， 对于多个铸造角度（42），选择使所述射线最小化的最佳铸造角度与所述多个铸造角度（44）中的一个相交，并且从所述优化的铸造角度（48）显示优化的医疗三维可视化。

    Method and apparatus for reconstruction of tilted cone beam data
    37.
    发明申请
    Method and apparatus for reconstruction of tilted cone beam data 有权
    用于重建倾斜锥形束数据的方法和装置

    公开(公告)号：US20060083345A1

    公开(公告)日：2006-04-20

    申请号：US10966415

    申请日：2004-10-15

    申请人： Jiang Hsieh ,  Xiangyang Tang

    发明人： Jiang Hsieh ,  Xiangyang Tang

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

    CPC分类号： G06T11/006 ,  A61B6/027 ,  A61B6/4447 ,  G06T11/005

    摘要： A method for reconstructing tilted cone beam data acquired using a CT apparatus. The CT apparatus has a gantry and a table. The gantry has an x-ray source and a detector array with columns and rows. The gantry is tilted at a gantry tilt angle with respect to the table and a plurality of projection data is acquired using the CT apparatus. Fan-parallel rebinning is performed on a row by row basis to form a plurality of reconstructed pixels. The coordinate locations of the plurality of reconstructed pixels are adjusted based on the gantry tilt angle and used to form a reconstructed image.

    摘要翻译： 一种用于重建使用CT装置获取的倾斜锥形束数据的方法。 CT装置具有龙门架和桌子。 台架具有x射线源和具有列和行的检测器阵列。 台架以相对于工作台的台架倾斜角度倾斜，并且使用CT装置获取多个投影数据。 以逐行为基础进行风扇平行重组以形成多个重构像素。 基于台架倾斜角来调整多个重建像素的坐标位置，并用于形成重构图像。

    Method, system and storage medium for reference normalization for blocked reference channels
    39.
    发明授权
    Method, system and storage medium for reference normalization for blocked reference channels 失效
    阻塞参考通道的参考标准化方法，系统和存储介质

    公开(公告)号：US06996206B2

    公开(公告)日：2006-02-07

    申请号：US10709080

    申请日：2004-04-12

    申请人： Jiang Hsieh ,  Jean-Baptiste Thibault ,  Fang Frank Dong ,  Jian ying Li ,  Edward Chao ,  Scott Matt McOlash

    发明人： Jiang Hsieh ,  Jean-Baptiste Thibault ,  Fang Frank Dong ,  Jian ying Li ,  Edward Chao ,  Scott Matt McOlash

    IPC分类号： A61B6/03

    CPC分类号： A61B6/583 ,  A61B6/032 ,  A61B6/585

    摘要： A method for performing reference normalization for an image created by an imaging system. The imaging system includes a radiation detector array with a right and left edge. The method includes receiving a projection dataset created by the imaging system in response to a varying x-ray tube current. The projection dataset includes a view and predicted fluxes are calculated for the set of reference channels within the view. A right set of reference channels are located proximate at the right edge of the detector array and a left set of reference channels are located proximate to the left edge of the detector array. The method also includes calculating average actual fluxes for the sets of reference channels. Based on the predicted reference fluxes and the average fluxes, a reference correction value for the view is determined. The correction value is applied for the reference correction of the view.

    摘要翻译： 一种用于对由成像系统创建的图像执行参考归一化的方法。 成像系统包括具有左右边缘的辐射检测器阵列。 该方法包括响应于变化的X射线管电流接收由成像系统创建的投影数据集。 投影数据集包括视图，并且为视图内的参考通道集合计算预测通量。 参考通道的右侧集合位于检测器阵列的右边缘附近，并且左组参考通道位于检测器阵列的左边缘附近。 该方法还包括计算参考通道组的平均实际通量。 基于预测的参考通量和平均通量，确定视图的参考校正值。 校正值被应用于视图的参考校正。

    Methods and apparatus for helical reconstruction for multislice CT scan
    40.
    发明授权
    Methods and apparatus for helical reconstruction for multislice CT scan 失效
    用于多层CT扫描的螺旋重建的方法和装置

    公开(公告)号：US06980681B1

    公开(公告)日：2005-12-27

    申请号：US09557108

    申请日：2000-04-24

    申请人： Jiang Hsieh

    发明人： Jiang Hsieh

    IPC分类号： A61B6/03 ,  G01N23/04 ,  G06T1/00 ,  G06T11/00 ,  G06K9/00

    CPC分类号： A61B6/032 ,  A61B6/027 ,  G01N23/046 ,  G01N2223/419 ,  G01N2223/612 ,  G06T11/006 ,  G06T2211/421

    摘要： One embodiment of the present invention is a method for imaging an object with a computed tomographic (CT) imaging system that includes steps of helically scanning the object with a multi-slice CT imaging system to acquire attenuation measurements of the object, the measurements including more than two conjugate samples for estimation of a projection at a plane of reconstruction of the object; and filtering and backprojecting the attenuation measurements of the object, including the more than two conjugate samples, to reconstruct at least one image slice of the object. An improved sampling pattern and better use of the attenuation samples obtained during a scan is thus provided.

    摘要翻译： 本发明的一个实施例是一种用计算机断层摄影（CT）成像系统对物体进行成像的方法，所述计算机断层摄影（CT）成像系统包括用多层CT成像系统螺旋扫描物体以获取物体的衰减测量的步骤，所述测量包括更多 比用于估计物体重建平面处的投影的两个共轭样本; 并且对包括多于两个共轭样本的对象的衰减测量进行滤波和反投影来重建对象的至少一个图像切片。 因此提供了在扫描期间获得的衰减样本的改进的采样模式和更好的使用。