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公开(公告)号：US20130343673A1
公开(公告)日：2013-12-26
申请号：US13531255
申请日：2012-06-22
申请人： Debashish Pal , Donghwan Kim , Jang Hwan Cho , Jeffrey A. Fessler , Jean-Baptiste Thibault , Zhou Yu , Somesh Srivastava , Lin Fu , Bruno Kristiaan Bernard De Man
发明人： Debashish Pal , Donghwan Kim , Jang Hwan Cho , Jeffrey A. Fessler , Jean-Baptiste Thibault , Zhou Yu , Somesh Srivastava , Lin Fu , Bruno Kristiaan Bernard De Man
IPC分类号： G06T11/00
CPC分类号： G06T11/003 , G06T11/006 , G06T2211/408 , G06T2211/424
摘要： A method is provided for iteratively reconstructing an image of an object. The method includes accessing measurement data associated with the image, and using a simultaneous algorithm to reconstruct the image. Using the simultaneous algorithm to reconstruct the image includes determining a scaling factor that is voxel-dependent, and applying the voxel-dependent scaling factor to a gradient of an objective function to reconstruct the image.
摘要翻译： 提供了用于迭代地重建对象的图像的方法。 该方法包括访问与图像相关联的测量数据，并且使用同时的算法重建图像。 使用同时算法来重建图像包括确定与体素相关的缩放因子，以及将体素依赖缩放因子应用于目标函数的梯度以重建图像。
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公开(公告)号：US08958660B2
公开(公告)日：2015-02-17
申请号：US13531255
申请日：2012-06-22
申请人： Debashish Pal , Donghwan Kim , Jang Hwan Cho , Jeffrey A. Fessler , Jean-Baptiste Thibault , Zhou Yu , Somesh Srivastava , Lin Fu , Bruno Kristiaan Bernard De Man
发明人： Debashish Pal , Donghwan Kim , Jang Hwan Cho , Jeffrey A. Fessler , Jean-Baptiste Thibault , Zhou Yu , Somesh Srivastava , Lin Fu , Bruno Kristiaan Bernard De Man
CPC分类号： G06T11/003 , G06T11/006 , G06T2211/408 , G06T2211/424
摘要： A method is provided for iteratively reconstructing an image of an object. The method includes accessing measurement data associated with the image, and using a simultaneous algorithm to reconstruct the image. Using the simultaneous algorithm to reconstruct the image includes determining a scaling factor that is voxel-dependent, and applying the voxel-dependent scaling factor to a gradient of an objective function to reconstruct the image.
摘要翻译： 提供了用于迭代地重建对象的图像的方法。 该方法包括访问与图像相关联的测量数据，并且使用同时的算法重建图像。 使用同时算法来重建图像包括确定与体素相关的缩放因子，以及将体素依赖缩放因子应用于目标函数的梯度以重建图像。
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公开(公告)号：US08885975B2
公开(公告)日：2014-11-11
申请号：US13531082
申请日：2012-06-22
申请人： Zhou Yu , Bruno Kristiaan Bernard De Man , Jean-Baptiste Thibault , Debashish Pal , Lin Fu , Charles A. Bouman , Ken Sauer , Sathish Ramani , Jeffrey A. Fessler , Somesh Srivastava
发明人： Zhou Yu , Bruno Kristiaan Bernard De Man , Jean-Baptiste Thibault , Debashish Pal , Lin Fu , Charles A. Bouman , Ken Sauer , Sathish Ramani , Jeffrey A. Fessler , Somesh Srivastava
CPC分类号： G06T11/003 , G06T11/006 , G06T2211/424
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。
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公开(公告)号：US09020230B2
公开(公告)日：2015-04-28
申请号：US13287589
申请日：2011-11-02
申请人： Zhou Yu , Evgeny Drapkin , Bruno Kristiaan Bernard De Man , Jean-Baptiste Thibault , Kai Zeng , Jiang Hsieh , Brian Edward Nett , Debashish Pal , Lin Fu , Guangzhi Cao , Charles A. Bouman, Jr. , Ken David Sauer
发明人： Zhou Yu , Evgeny Drapkin , Bruno Kristiaan Bernard De Man , Jean-Baptiste Thibault , Kai Zeng , Jiang Hsieh , Brian Edward Nett , Debashish Pal , Lin Fu , Guangzhi Cao , Charles A. Bouman, Jr. , Ken David Sauer
IPC分类号： G06T11/00
CPC分类号： G06T11/006 , G06T2211/424 , G06T2211/428
摘要： A method for reconstructing an image of an object that includes a plurality of image elements. The method includes accessing image data associated with a plurality of image elements, and reconstructing an image of the object by optimizing an objective function, where the objective function is optimized by iteratively solving a nested sequence of approximate optimization problems. The algorithm is composed of nested iterative loops, in which an inner loop iteratively optimizes an objective function approximating the outer loop objective function, and an outer loop that utilizes the solution of the inner loop to optimize the original objective function.
摘要翻译： 一种用于重构包括多个图像元素的对象的图像的方法。 该方法包括访问与多个图像元素相关联的图像数据，以及通过优化目标函数来重构对象的图像，其中通过迭代地求解近似优化问题的嵌套序列来优化目标函数。 该算法由嵌套迭代循环组成，其中内循环迭代地优化近似外循环目标函数的目标函数，以及利用内循环的解来优化原始目标函数的外循环。
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公开(公告)号：US20130108128A1
公开(公告)日：2013-05-02
申请号：US13287589
申请日：2011-11-02
申请人： Zhou Yu , Evgeny Drapkin , Bruno Kristiaan Bernard De Man , Jean-Baptiste Thibault , Kai Zeng , Jiang Hsieh , Brian Edward Nett , Debashish Pal , Lin Fu , Guangzhi Cao , Charles A. Bouman, JR. , Ken David Sauer
发明人： Zhou Yu , Evgeny Drapkin , Bruno Kristiaan Bernard De Man , Jean-Baptiste Thibault , Kai Zeng , Jiang Hsieh , Brian Edward Nett , Debashish Pal , Lin Fu , Guangzhi Cao , Charles A. Bouman, JR. , Ken David Sauer
IPC分类号： G06K9/00
CPC分类号： G06T11/006 , G06T2211/424 , G06T2211/428
摘要： A method for reconstructing an image of an object that includes a plurality of image elements. The method includes accessing image data associated with a plurality of image elements, and reconstructing an image of the object by optimizing an objective function, where the objective function is optimized by iteratively solving a nested sequence of approximate optimization problems. The algorithm is composed of nested iterative loops, in which an inner loop iteratively optimizes an objective function approximating the outer loop objective function, and an outer loop that utilizes the solution of the inner loop to optimize the original objective function.
摘要翻译： 一种用于重构包括多个图像元素的对象的图像的方法。 该方法包括访问与多个图像元素相关联的图像数据，以及通过优化目标函数来重构对象的图像，其中通过迭代地求解近似优化问题的嵌套序列来优化目标函数。 该算法由嵌套迭代循环组成，其中内循环迭代地优化近似外循环目标函数的目标函数，以及利用内循环的解来优化原始目标函数的外循环。
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6.发明申请公开(公告)号：US20110150308A1
公开(公告)日：2011-06-23
申请号：US12646653
申请日：2009-12-23
申请人： Jean-Baptiste Thibault , Bruno Kristiaan Bernard De Man , Kai Zeng , Zhou Yu , Charles Addison Bouman, JR. , Ken David Sauer
发明人： Jean-Baptiste Thibault , Bruno Kristiaan Bernard De Man , Kai Zeng , Zhou Yu , Charles Addison Bouman, JR. , Ken David Sauer
CPC分类号： G06T11/006 , G06T2211/412 , G06T2211/424
摘要： A system and method include acquisition of a set of image data corresponding to a time period of data acquisition, the set of image data corresponding to a plurality of voxels, wherein each of the plurality of voxels corresponds to a distinct acquisition time within the time period of data acquisition. The system and method further include the modeling of the plurality of voxels as a function of time based on a plurality of kinetic parameters associated therewith and reconstruction of an image from the set of image data based on the modeled plurality of voxels.
摘要翻译： 一种系统和方法包括获取对应于数据采集的时间段的一组图像数据，所述一组对应于多个体素的图像数据，其中，所述多个体素中的每一个对应于所述时间段内的不同采集时间 的数据采集。 所述系统和方法还包括基于与其相关联的多个动力学参数和基于所建模的多个体素从所述图像数据集中重建图像，作为时间的函数的所述多个体素的建模。
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7.发明授权公开(公告)号：US08787521B2
公开(公告)日：2014-07-22
申请号：US12646653
申请日：2009-12-23
申请人： Jean-Baptiste Thibault , Bruno Kristiaan Bernard De Man , Kai Zeng , Zhou Yu , Charles Addison Bouman, Jr. , Ken David Sauer
发明人： Jean-Baptiste Thibault , Bruno Kristiaan Bernard De Man , Kai Zeng , Zhou Yu , Charles Addison Bouman, Jr. , Ken David Sauer
IPC分类号： G06K9/00
CPC分类号： G06T11/006 , G06T2211/412 , G06T2211/424
摘要： A system and method include acquisition of a set of image data corresponding to a time period of data acquisition, the set of image data corresponding to a plurality of voxels, wherein each of the plurality of voxels corresponds to a distinct acquisition time within the time period of data acquisition. The system and method further include the modeling of the plurality of voxels as a function of time based on a plurality of kinetic parameters associated therewith and reconstruction of an image from the set of image data based on the modeled plurality of voxels.
摘要翻译： 一种系统和方法包括获取对应于数据采集的时间段的一组图像数据，所述一组对应于多个体素的图像数据，其中，所述多个体素中的每一个对应于所述时间段内的不同采集时间 的数据采集。 所述系统和方法还包括基于与其相关联的多个动力学参数和基于所建模的多个体素从所述图像数据集中重建图像，作为时间的函数的所述多个体素的建模。
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8.发明授权公开(公告)号：US08761478B2
公开(公告)日：2014-06-24
申请号：US12775308
申请日：2010-05-06
申请人： Jiang Hsieh , Brian Edward Nett , Debashish Pal , Basel Hasan Taha , Jean-Baptiste Thibault , Zhou Yu
发明人： Jiang Hsieh , Brian Edward Nett , Debashish Pal , Basel Hasan Taha , Jean-Baptiste Thibault , Zhou Yu
CPC分类号： G06T11/006 , A61B6/032 , A61B6/037 , A61B6/503 , A61B6/504 , A61B6/5217 , A61B6/5264 , A61B6/5288 , G06T2211/412 , G06T2211/424
摘要： A tomographic system includes a gantry having an opening for receiving an object to be scanned, a radiation source, a detector positioned to receive radiation from the source that passes through the object, and a computer. The computer is programmed to acquire a plurality of projection datasets of the object, define a temporal subset of projection datasets from the plurality of projection datasets, reconstruct a working image of the object using the plurality of projection datasets, identify a region of motion in the working image, and minimize motion artifacts in the region of motion in the working image using the temporal subset of projection datasets.
摘要翻译： 断层摄影系统包括具有用于接收待扫描物体的开口的台架，辐射源，定位成接收来自穿过物体的源的辐射的检测器，以及计算机。 计算机被编程以获取对象的多个投影数据集，从多个投影数据集定义投影数据集的时间子集，使用多个投影数据集重建对象的工作图像，识别在该投影数据集中的运动区域 使用投影数据集的时间子集，使工作图像中的运动区域中的运动伪影最小化。
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9.发明申请SYSTEM AND METHOD FOR TOMOGRAPHIC DATA ACQUISITION AND IMAGE RECONSTRUCTION 有权用于TOMOGRAPHIC数据采集和图像重建的系统和方法公开(公告)号：US20110142315A1
公开(公告)日：2011-06-16
申请号：US12775308
申请日：2010-05-06
申请人： Jiang Hsieh , Brian Edward Nett , Debashish Pal , Basel Hasan Taha , Jean-Baptiste Thibault , Zhou Yu
发明人： Jiang Hsieh , Brian Edward Nett , Debashish Pal , Basel Hasan Taha , Jean-Baptiste Thibault , Zhou Yu
IPC分类号： G06K9/62
CPC分类号： G06T11/006 , A61B6/032 , A61B6/037 , A61B6/503 , A61B6/504 , A61B6/5217 , A61B6/5264 , A61B6/5288 , G06T2211/412 , G06T2211/424
摘要： A tomographic system includes a gantry having an opening for receiving an object to be scanned, a radiation source, a detector positioned to receive radiation from the source that passes through the object, and a computer. The computer is programmed to acquire a plurality of projection datasets of the object, define a temporal subset of projection datasets from the plurality of projection datasets, reconstruct a working image of the object using the plurality of projection datasets, identify a region of motion in the working image, and minimize motion artifacts in the region of motion in the working image using the temporal subset of projection datasets.
摘要翻译： 断层摄影系统包括具有用于接收待扫描物体的开口的台架，辐射源，定位成接收来自穿过物体的源的辐射的检测器，以及计算机。 计算机被编程以获取对象的多个投影数据集，从多个投影数据集定义投影数据集的时间子集，使用多个投影数据集重建对象的工作图像，识别在该投影数据集中的运动区域 使用投影数据集的时间子集，使工作图像中的运动区域中的运动伪影最小化。
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公开(公告)号：US20080118020A1
公开(公告)日：2008-05-22
申请号：US11561114
申请日：2006-11-17
申请人： Jean-Baptiste Daniel Marie Thibault , Jiang Hsieh , Bruno Kristiaan Bernard De Man , Samit Kumar Basu , Zhou Yu , Charles Addison Bouman , Ken David Sauer
发明人： Jean-Baptiste Daniel Marie Thibault , Jiang Hsieh , Bruno Kristiaan Bernard De Man , Samit Kumar Basu , Zhou Yu , Charles Addison Bouman , Ken David Sauer
CPC分类号： G06T11/006 , G06T2211/424
摘要： A method for reconstructing an image of an object, the image comprising a plurality of image elements, is disclosed. The method includes accessing image data associated with the plurality of image elements, applying a first algorithm to the plurality of image elements, selecting a spatially non-homogenous set of the plurality of image elements, and applying an iterative algorithm to the set of image elements to reduce an amount of time necessary for reconstructing the image, or to improve an image quality at a fixed computation time, or both.
摘要翻译： 公开了一种用于重构对象的图像的方法，该图像包括多个图像元素。 该方法包括访问与多个图像元素相关联的图像数据，向多个图像元素应用第一算法，选择多个图像元素的空间非均匀集合，以及将迭代算法应用于图像元素集合 以减少重建图像所需的时间量，或者以固定的计算时间或两者来提高图像质量。
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