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    System and method for material decomposition optimization in image domain
    9.
    发明授权
    System and method for material decomposition optimization in image domain 有权
    图像域中物质分解优化的系统和方法

    公开(公告)号：US08588494B2

    公开(公告)日：2013-11-19

    申请号：US12915195

    申请日：2010-10-29

    申请人： Bruno Kristiaan Bernard De Man ,  Jiang Hsieh ,  Naveen Chandra ,  Jed Douglas Pack ,  Jiahua Fan

    发明人： Bruno Kristiaan Bernard De Man ,  Jiang Hsieh ,  Naveen Chandra ,  Jed Douglas Pack ,  Jiahua Fan

    IPC分类号： G06K9/00 ,  A61B6/00 ,  G01N23/00 ,  G21K1/12 ,  H05G1/60

    CPC分类号： H04B1/1638 ,  G06T11/008 ,  G06T2211/408

    摘要： A system and method for material decomposition optimization in the image domain include a non-transitory computer readable medium has stored thereon a sequence of instructions which, when executed by a computer, causes the computer to access a reconstructed basis material image. For a first voxel of the reconstructed basis material image, the instructions also cause the computer to optimize a concentration of a pair of materials (a,b) in the first voxel exclusively in the image domain and based on a first probability based on random perturbations and a second probability based on random perturbations. The optimization is further based on a third probability based on known materials and a fourth probability based on concentrations of the pair of materials in a pair of voxels neighboring the first voxel.

    摘要翻译： 用于图像域中的材料分解优化的系统和方法包括其上存储有一系列指令的非瞬时计算机可读介质，所述指令序列当由计算机执行时使计算机访问重建的基础材料图像。 对于重建的基材图像的第一体素，指令还使计算机优化仅在图像域中的第一体素中的一对材料（a，b）的浓度，并且基于基于随机扰动的第一概率 和基于随机扰动的第二概率。 优化进一步基于基于已知材料的第三概率和基于邻近第一体素的一对体素中的该对材料对的浓度的第四概率。

    SYSTEM AND METHOD OF INCREASING TEMPORAL RESOLUTION OF AN X-RAY IMAGE
    10.
    发明申请
    SYSTEM AND METHOD OF INCREASING TEMPORAL RESOLUTION OF AN X-RAY IMAGE 有权
    增加X射线图像的时间分辨率的系统和方法

    公开(公告)号：US20120314928A1

    公开(公告)日：2012-12-13

    申请号：US13593156

    申请日：2012-08-23

    申请人： Jiang Hsieh ,  Roy-Arnulf Helge Nilsen ,  Peter Michael Edic ,  Bruno Kristiaan Bernard De Man ,  Jean-Baptiste Thibault ,  Baojun Li ,  John Lawrence Seamans

    发明人： Jiang Hsieh ,  Roy-Arnulf Helge Nilsen ,  Peter Michael Edic ,  Bruno Kristiaan Bernard De Man ,  Jean-Baptiste Thibault ,  Baojun Li ,  John Lawrence Seamans

    IPC分类号： G06K9/46

    CPC分类号： A61B6/032 ,  A61B6/482 ,  A61B6/503 ,  G06T11/006 ,  G06T2211/412 ,  G06T2211/424

    摘要： A system, method, and apparatus includes a computed tomography (CT) system having a rotatable gantry, an x-ray source, a generator, a detector having pixels and positioned to receive x-rays, and a computer. The computer is programmed to acquire CT data representative of an object, determine a first subset of the CT data, determine a second subset of the CT data, and determine a difference between the first and second subsets of the CT data to identify a motion region in the object. The computer is also programmed to update image data reconstructed from a first portion of the first subset of the CT data and corresponding to the region and reconstruct an image based on the updated image data and non-updated image data. The non-updated image data is reconstructed from a second portion the first subset of the CT data.

    摘要翻译： 系统，方法和装置包括具有可旋转机架，X射线源，发生器，具有像素并被定位成接收x射线的检测器的计算机断层摄影（CT）系统和计算机。 计算机被编程为获取表示对象的CT数据，确定CT数据的第一子集，确定CT数据的第二子集，并且确定CT数据的第一和第二子集之间的差异，以识别运动区域 在对象中。 计算机还被编程为更新从CT数据的第一子集的第一部分重建并对应于该区域的图像数据，并且基于更新的图像数据和未更新的图像数据重建图像。 从CT数据的第一子集的第二部分重构未更新的图像数据。