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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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3.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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4.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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公开(公告)号：US08655033B2
公开(公告)日：2014-02-18
申请号：US12607309
申请日：2009-10-28
申请人： Kai Zeng , Charles Addison Bouman, Jr. , Bruno Kristiaan Bernard De Man , Jiang Hsieh , Ken David Sauer , Jean-Baptiste Daniel Marie Thibault , Zhou Yu
发明人： Kai Zeng , Charles Addison Bouman, Jr. , Bruno Kristiaan Bernard De Man , Jiang Hsieh , Ken David Sauer , Jean-Baptiste Daniel Marie Thibault , Zhou Yu
IPC分类号： G06K9/00
CPC分类号： A61B6/5258 , G06T11/006 , G06T11/008 , G06T2211/424
摘要： An improved iterative reconstruction method to reconstruct a first image includes generating an imaging beam, receiving said imaging beam on a detector array, generating projection data based on said imaging beams received by said detector array, providing said projection data to an image reconstructor, enlarging one of a plurality of voxels and a plurality of detectors of the provided projection data, reconstructing portions of the first image with the plurality of enlarged voxels or detectors, and iteratively reconstructing the portions of the first image to create a reconstructed image.
摘要翻译： 用于重建第一图像的改进的迭代重建方法包括产生成像光束，在检测器阵列上接收所述成像光束，基于由所述检测器阵列接收的所述成像光束产生投影数据，将所述投影数据提供给图像重建器， 的多个体素和所提供的投影数据的多个检测器，用多个放大体素或检测器重构第一图像的部分，并迭代地重构第一图像的部分以创建重建图像。
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公开(公告)号：US20110097007A1
公开(公告)日：2011-04-28
申请号：US12607309
申请日：2009-10-28
申请人： Kai Zeng , Charles Addison Bouman, JR. , Bruno Kristiaan Bernard De Man , Jiang Hsieh , Ken David Sauer , Jean-Baptiste Daniel Marie Thibault , Zhou Yu
发明人： Kai Zeng , Charles Addison Bouman, JR. , Bruno Kristiaan Bernard De Man , Jiang Hsieh , Ken David Sauer , Jean-Baptiste Daniel Marie Thibault , Zhou Yu
IPC分类号： G06K9/40
CPC分类号： A61B6/5258 , G06T11/006 , G06T11/008 , G06T2211/424
摘要： An improved iterative reconstruction method to reconstruct a first image includes generating an imaging beam, receiving said imaging beam on a detector array, generating projection data based on said imaging beams received by said detector array, providing said projection data to an image reconstructor, enlarging one of a plurality of voxels and a plurality of detectors of the provided projection data, reconstructing portions of the first image with the plurality of enlarged voxels or detectors, and iteratively reconstructing the portions of the first image to create a reconstructed image.
摘要翻译： 用于重建第一图像的改进的迭代重建方法包括产生成像光束，在检测器阵列上接收所述成像光束，基于由所述检测器阵列接收的所述成像光束产生投影数据，将所述投影数据提供给图像重建器， 的多个体素和所提供的投影数据的多个检测器，用多个放大体素或检测器重构第一图像的部分，并迭代地重构第一图像的部分以创建重建图像。
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公开(公告)号：US08861829B2
公开(公告)日：2014-10-14
申请号：US13250753
申请日：2011-09-30
CPC分类号： G06K9/46 , G06T11/003 , G06T11/006 , G06T2211/421
摘要： Approaches are described for processing half-scan or full-scan cone beam image data using one or more half-ramp filtering operations. In one embodiment, the half-ramp filtering operations allow extraction and use of missing frequency data so as to generate a reconstructed image that is relatively complete in terms of frequency data and which has suitable temporal resolution. In addition, in certain embodiments, the reconstructed image may have uniform frequency weighting.
摘要翻译： 描述了使用一个或多个半斜坡滤波操作来处理半扫描或全扫描锥形束图像数据的方法。 在一个实施例中，半斜坡滤波操作允许提取和使用丢失的频率数据，以便产生在频率数据方面相对完整并且具有合适的时间分辨率的重构图像。 此外，在某些实施例中，重构图像可以具有均匀的频率加权。
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公开(公告)号：US20130003914A1
公开(公告)日：2013-01-03
申请号：US13174438
申请日：2011-06-30
申请人： Zhye Yin , Roy Arnulf Helge Nilsen , Jiahua Fan , Thomas Matthew Benson , Bruno Kristiaan Bernard De Man , Jed Douglas Pack , Kai Zeng
发明人： Zhye Yin , Roy Arnulf Helge Nilsen , Jiahua Fan , Thomas Matthew Benson , Bruno Kristiaan Bernard De Man , Jed Douglas Pack , Kai Zeng
IPC分类号： A61B6/03
CPC分类号： A61B6/032 , A61B6/06 , A61B6/405 , A61B6/4085 , A61B6/4435 , A61B6/542
摘要： Approaches for acquiring CT image data corresponding to a full scan, but at a reduced dose are disclosed. In one implementation, X-ray tube current modulation is employed to reduce the effective dose. In other implementations, acquisition of sparse views, z-collimation, and two-rotation acquisition protocols may be employed to achieve a reduced dose relative to a full-scan acquisition protocol.
摘要翻译： 公开了用于获取对应于全扫描但以减小剂量的CT图像数据的方法。 在一个实施方案中，采用X射线管电流调制来降低有效剂量。 在其他实施方案中，可采用稀疏视图，z准直和双旋转采集协议的采集来实现相对于全扫描采集协议的减少的剂量。
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公开(公告)号：US09237873B2
公开(公告)日：2016-01-19
申请号：US13285953
申请日：2011-10-31
CPC分类号： A61B6/032 , A61B6/5205 , A61B6/5258 , G06T11/005 , G06T2211/432
摘要： A system and method for CT projection extrapolation are provided. The method comprises receiving a CT projection for extrapolation. The method also comprises selecting a target patch comprising at least one pixel of a row to be extrapolated. The method further comprises generating a correlation profile between the target patch and one or more source patches, wherein the source patches comprise measured pixels in the CT projection in one or more rows adjacent to the target patch. The projection data is generated for at least one pixel of the target patch based on the correlation profile and the measured pixels of at least one of the source patches.
摘要翻译： 提供了一种用于CT投影外插的系统和方法。 该方法包括接收用于外推的CT投影。 该方法还包括选择包括要外推的行的至少一个像素的目标补丁。 所述方法还包括在所述目标贴片和一个或多个源贴片之间产生相关曲线，其中所述源贴片包括所述CT投影中与所述目标贴片相邻的一行或多行中的测量像素。 基于相关分布和至少一个源补丁的测量像素，为目标补丁的至少一个像素生成投影数据。
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公开(公告)号：US20130108007A1
公开(公告)日：2013-05-02
申请号：US13285953
申请日：2011-10-31
IPC分类号： A61B6/03
CPC分类号： A61B6/032 , A61B6/5205 , A61B6/5258 , G06T11/005 , G06T2211/432
摘要： A system and method for CT sinogram extrapolation are provided. The method comprises receiving a CT projection for extrapolation. The method also comprises selecting a target patch comprising at least one pixel of a row to be extrapolated. The method further comprises generating a correlation profile between the target patch and one or more source patches, wherein the source patches comprise measured pixels in the CT projection in one or more rows adjacent to the target patch. The projection data is generated for at least one pixel of the target patch based on the correlation profile and the measured pixels of at least one of the source patches.
摘要翻译： 提供了一种用于CT正弦图外插的系统和方法。 该方法包括接收用于外推的CT投影。 该方法还包括选择包括要外推的行的至少一个像素的目标补丁。 所述方法还包括在所述目标贴片和一个或多个源贴片之间产生相关曲线，其中所述源贴片包括所述CT投影中与所述目标贴片相邻的一行或多行中的测量像素。 基于相关分布和至少一个源补丁的测量像素，为目标补丁的至少一个像素生成投影数据。
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