System and method for image reconstruction
    1.
    发明授权
    System and method for image reconstruction 有权
    图像重建系统和方法

    公开(公告)号:US08184887B2

    公开(公告)日:2012-05-22

    申请号:US12200946

    申请日:2008-08-29

    IPC分类号: G06K9/00

    CPC分类号: G06T11/006 G06T2211/424

    摘要: A tomographic imaging apparatus is provided for generating images. The tomographic apparatus includes a computer programmed to access a data sinogram representative of the image, reconstruct the image, divide the image into a plurality of sub-regions, define a region of interest including at least one sub-region, reprojecting a region of interest or a complement of the region of interest to generate a region of interest sinogram or a sinogram representative of the complement of the region of interest and reconstructing a resultant sinogram using iterative methods to generate an image.

    摘要翻译: 提供了一种用于生成图像的断层图像成像装置。 断层摄影装置包括被编程为访问表示图像的数据图形图像的计算机,重建图像,将图像划分成多个子区域,定义包括至少一个子区域的关注区域,重新投影感兴趣的区域 或感兴趣区域的补体以产生感兴趣区域的正弦图或表示感兴趣区域的补码的正弦图,并使用迭代方法重建生成的正弦图以生成图像。

    SYSTEM AND METHOD FOR IMAGE RECONSTRUCTION
    2.
    发明申请
    SYSTEM AND METHOD FOR IMAGE RECONSTRUCTION 有权
    用于图像重构的系统和方法

    公开(公告)号:US20100054561A1

    公开(公告)日:2010-03-04

    申请号:US12200946

    申请日:2008-08-29

    IPC分类号: G06K9/00

    CPC分类号: G06T11/006 G06T2211/424

    摘要: A tomographic imaging apparatus is provided for generating images. The tomographic apparatus includes a computer programmed to access a data sinogram representative of the image, reconstruct the image, divide the image into a plurality of sub-regions, define a region of interest including at least one sub-region, reprojecting a region of interest or a complement of the region of interest to generate a region of interest sinogram or a sinogram representative of the complement of the region of interest and reconstructing a resultant sinogram using iterative methods to generate an image.

    摘要翻译: 提供了一种用于生成图像的断层图像成像装置。 断层摄影装置包括被编程为访问表示图像的数据图形图像的计算机,重建图像,将图像划分成多个子区域,定义包括至少一个子区域的关注区域,重新投影感兴趣的区域 或感兴趣区域的补体以产生感兴趣区域的正弦图或表示感兴趣区域的补码的正弦图,并使用迭代方法重建生成的正弦图以生成图像。

    METHOD AND APPARATUS FOR ITERATIVE RECONSTRUCTION
    6.
    发明申请
    METHOD AND APPARATUS FOR ITERATIVE RECONSTRUCTION 有权
    用于迭代重建的方法和装置

    公开(公告)号:US20130343672A1

    公开(公告)日:2013-12-26

    申请号:US13531082

    申请日:2012-06-22

    IPC分类号: G06T11/00

    摘要: A method is provided for reconstructing an image of an object that includes image elements. The method includes accessing measurement data associated with the image elements, introducing an auxiliary variable to transform an original problem of reconstructing the image to a constrained optimization problem, and solving the constrained optimization problem using a method of multipliers to create a sequence of sub-problems and solve the sequence of sub-problems. Solving the sequence of sub-problems includes reconstructing the image by optimizing a first objective function. The first objective function is optimized by iteratively solving a nested sequence of approximate optimization problems. An inner loop iteratively optimizes a second objective function approximating the first objective function. An outer loop utilizes the solution of the second objective function to optimize the first objective function.

    摘要翻译: 提供了一种用于重构包括图像元素的对象的图像的方法。 该方法包括访问与图像元素相关联的测量数据,引入辅助变量以将原始图像重建问题转换为约束优化问题,以及使用乘法器的方法来解决约束优化问题以创建子问题序列 并解决子问题的顺序。 解决子问题的顺序包括通过优化第一目标函数重建图像。 通过迭代求解近似优化问题的嵌套序列,优化了第一个目标函数。 内循环迭代地优化接近于第一目标函数的第二目标函数。 外环利用第二目标函数的解来优化第一目标函数。

    SYSTEM AND METHOD OF NOTCH FILTRATION FOR DUAL ENERGY CT
    8.
    发明申请
    SYSTEM AND METHOD OF NOTCH FILTRATION FOR DUAL ENERGY CT 有权
    双能量CT的盲孔过滤系统及方法

    公开(公告)号:US20120069953A1

    公开(公告)日:2012-03-22

    申请号:US12887584

    申请日:2010-09-22

    IPC分类号: A61B6/03 G01N23/04

    摘要: An imaging system includes an x-ray source that emits a beam of x-rays toward an object to be imaged, a detector that receives the x-rays attenuated by the object, a spectral notch filter positioned between the x-ray source and the object, a data acquisition system (DAS) operably connected to the detector, and a computer operably connected to the DAS and programmed to acquire a first image dataset at a first kVp, acquire a second image dataset at a second kVp that is greater than the first kVp, and generate an image of the object using the first image dataset and the second image dataset.

    摘要翻译: 成像系统包括:x射线源,其向待成像物体发射X射线束;接收被物体衰减的x射线的检测器;定位在x射线源和 对象,可操作地连接到检测器的数据采集系统(DAS)和可操作地连接到DAS并被编程为在第一kVp获取第一图像数据集的计算机,在第二个kVp处获取第二个图像数据集,该第二个kVp大于 并且使用第一图像数据集和第二图像数据集生成对象的图像。

    System and method for image reconstruction
    10.
    发明授权
    System and method for image reconstruction 有权
    图像重建系统和方法

    公开(公告)号:US07376255B2

    公开(公告)日:2008-05-20

    申请号:US10874976

    申请日:2004-06-23

    IPC分类号: G06K9/00 G06K9/40

    摘要: A method for reconstructing image data acquired by a computed tomography system is provided. The method comprises selecting a portion of image data to be reconstructed and determining a corresponding portion of projection data. An adaptive filter is computed and applied to the portion of projection data to generate a portion of adaptively-filtered projection data. The adaptive filter is computed based upon desired quality properties of the portion of image data. Finally, the portion of image data is reconstructed based upon the portion of adaptively-filtered projection data. The step of selecting, computing and reconstructing is repeated for every pixel or group of pixels comprising the image data.

    摘要翻译: 提供了一种重建由计算机断层摄影系统获取的图像数据的方法。 该方法包括选择要重建的图像数据的一部分并确定投影数据的对应部分。 计算自适应滤波器并将其应用于投影数据的一部分以生成自适应滤波投影数据的一部分。 基于图像数据部分的期望质量特性来计算自适应滤波器。 最后,基于自适应滤波投影数据的部分重建图像数据的部分。 对于包括图像数据的每个像素或像素组重复选择,计算和重建的步骤。