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公开(公告)号：US09721361B2
公开(公告)日：2017-08-01
申请号：US14755387
申请日：2015-06-30
Inventor： Debashish Pal , Evgeny Drapkin , Jean-Baptiste Thibault , Somesh Srivastava , Ryan Thome , Madison G. McGaffin , Jeffrey A. Fessler , Donghwan Kim
CPC classification number: G06T11/005 , A61B6/032 , A61B6/5205 , A61B6/5258 , G06T7/0012 , G06T11/006 , G06T2207/10081 , G06T2211/424
Abstract: A method for iteratively reconstructing an image is provided. The method includes acquiring, with a detector, computed tomography (CT) imaging information. The method also includes generating, with at least one processor, sinogram information from the CT imaging information. Further, the method includes generating, with the at least one processor, image domain information from the CT imaging information. Also, the method includes updating the image using the sinogram information. The method further includes updating the image using the image domain information. Updating the image using the sinogram information and updating the image using the image domain information are performed separately and alternately in an iterative fashion.
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公开(公告)号：US09538974B2
公开(公告)日：2017-01-10
申请号：US14548846
申请日：2014-11-20
Inventor： Guangzhi Cao , Jiang Hsieh , Jean-Baptiste Thibault , Jiahua Fan , Ken D. Sauer
CPC classification number: A61B6/5276 , A61B6/027 , A61B6/032 , A61B6/0407 , G06T7/0012 , G06T11/003 , G06T11/006 , G06T2207/10081
Abstract: Various methods and systems are provided for estimating and compensating for table deflection in reconstructed images. In one embodiment, a method for computed tomography (CT) imaging comprises reconstructing images from data acquired during a helical CT scan where table deflection parameters are estimated and the reconstruction is adjusted based on the table deflection parameters. In this way, images may be reconstructed without artifacts caused by table deflection.
Abstract translation: 提供了各种方法和系统来估计和补偿重建图像中的表偏移。 在一个实施例中，一种用于计算机断层摄影（CT）成像的方法包括从在螺旋CT扫描期间获取的数据重建图像，其中估计表偏转参数并且基于表偏转参数来调整重建。 以这种方式，可以重建图像而不产生由表偏转引起的伪像。
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公开(公告)号：US09466136B2
公开(公告)日：2016-10-11
申请号：US14092383
申请日：2013-11-27
Applicant: General Electric Company
Inventor： Jean-Baptiste Thibault , Ruoqiao Zhang , Charles Bouman , Ken Sauer
CPC classification number: G06T11/006 , A61B6/032 , A61B6/5205
Abstract: Methods and systems for model-based image processing are provided. One method includes selecting at least one reference image from a plurality of reference images, partitioning the at least one reference image into a plurality of patches, generating a probability distribution for each of the patches, and generating a model of a probability distribution for the at least one reference image using the probability distributions for each of the patches.
Abstract translation: 提供了基于模型的图像处理的方法和系统。 一种方法包括从多个参考图像中选择至少一个参考图像，将至少一个参考图像划分成多个补丁，为每个补丁生成概率分布，以及生成针对该补丁的概率分布的模型 使用每个补丁的概率分布的至少一个参考图像。
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公开(公告)号：US11126914B2
公开(公告)日：2021-09-21
申请号：US15730543
申请日：2017-10-11
Applicant: General Electric Company , Purdue University , Notre Dame University
Inventor： Jean-Baptiste Thibault , Somesh Srivastava , Jiang Hsieh , Charles A. Bouman, Jr. , Dong Ye , Ken Sauer
IPC: G06N3/08 , G06T11/00 , G01N23/046 , G06N20/00
Abstract: The present approach relates to the training of a machine learning algorithm for image generation and use of such a trained algorithm for image generation. Training the machine learning algorithm may involve using multiple images produced from a single set of tomographic projection or image data (such as a simple reconstruction and a computationally intensive reconstruction), where one image is the target image that exhibits the desired characteristics for the final result. The trained machine learning algorithm may be used to generate a final image corresponding to a computationally intensive algorithm from an input image generated using a less computationally intensive algorithm.
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公开(公告)号：US09508163B2
公开(公告)日：2016-11-29
申请号：US13918517
申请日：2013-06-14
Inventor： Zhou Yu , Bruno Kristiaan Bernard De Man , Jean-Baptiste Thibault , Debashish Pal , Lin Fu , Charles A. Bouman , Jeffrey Allen Fessler , Hung Nien
CPC classification number: G06T11/006 , G06T2211/424 , G06T2211/428
Abstract: A framework for an iterative reconstruction algorithm is described which combines two or more of an ordered subset method, a preconditioner method, and a nested loop method. In one type of implementation a nested loop (NL) structure is employed where the inner loop sub-problems are solved using ordered subset (OS) methods. The inner loop may be solved using OS and a preconditioner method. In other implementations, the inner loop problems are created by augmented Lagrangian methods and then solved using OS method.
Abstract translation: 描述了一种迭代重建算法的框架，其结合有序子集方法，预处理器方法和嵌套循环方法中的两个或更多个。 在一种类型的实现中，使用嵌套循环（NL）结构，其中使用有序子集（OS）方法来解决内循环子问题。 可以使用OS和预处理器方法来解决内循环。 在其他实现中，内循环问题是通过增强拉格朗日方法产生的，然后使用OS方法求解。
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Patent Agency Ranking
公开(公告)号：US20160143607A1
公开(公告)日：2016-05-26
申请号：US14548846
申请日：2014-11-20
Inventor： Guangzhi Cao , Jiang Hsieh , Jean-Baptiste Thibault , Jiahua Fan , Ken D. Sauer
CPC classification number: A61B6/5276 , A61B6/027 , A61B6/032 , A61B6/0407 , G06T7/0012 , G06T11/003 , G06T11/006 , G06T2207/10081
Abstract: Various methods and systems are provided for estimating and compensating for table deflection in reconstructed images. In one embodiment, a method for computed tomography (CT) imaging comprises reconstructing images from data acquired during a helical CT scan where table deflection parameters are estimated and the reconstruction is adjusted based on the table deflection parameters. In this way, images may be reconstructed without artifacts caused by table deflection.
Abstract translation: 提供了各种方法和系统来估计和补偿重建图像中的表偏移。 在一个实施例中，一种用于计算机断层摄影（CT）成像的方法包括从在螺旋CT扫描期间获取的数据重建图像，其中估计表偏转参数并且基于表偏转参数来调整重建。 以这种方式，可以重建图像而不产生由表偏转引起的伪像。
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17.发明授权公开(公告)号：US09261467B2
公开(公告)日：2016-02-16
申请号：US13918215
申请日：2013-06-14
Inventor： Jean-Baptiste Thibault , Xue Rui , Somesh Srivastava , Ken David Sauer , Lin Fu , Charles Addison Bouman, Jr.
CPC classification number: G01N23/046 , A61B6/032 , A61B6/5205 , G01N2223/1016 , G01N2223/419 , G06T11/006 , G06T2211/424
Abstract: A system and method include acquisition of projection data from a scanned object, the set of projection data comprising a plurality of projection measurements. The system and method also include calculation of a set of modified statistical weights from the projection data, wherein a respective modified statistical weight of the set of modified statistical weights comprises a deviation from an inverse variance of a corresponding projection measurement of the projection data. The system and method further include reconstruction of an image of the scanned object using the set of modified statistical weights as coefficients in an iterative reconstruction algorithm.
Abstract translation: 一种系统和方法包括从扫描对象获取投影数据，该组投影数据包括多个投影测量。 该系统和方法还包括从投影数据计算一组经修改的统计权重，其中修改的统计权重集合的相应修改的统计权重包括与投影数据的相应投影测量的逆方差的偏差。 该系统和方法还包括使用经修改的统计权重的集合来重建扫描对象的图像作为迭代重建算法中的系数。
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公开(公告)号：US09245320B2
公开(公告)日：2016-01-26
申请号：US14223353
申请日：2014-03-24
Applicant: GENERAL ELECTRIC COMPANY
Inventor： Kai Zeng , Bruno Kristiaan Bernard De Man , Jean-Baptiste Thibault
CPC classification number: G06T5/001 , A61B6/03 , A61B6/032 , A61B6/5205 , A61B6/5258 , G06T11/005 , G06T2211/424
Abstract: Methods and systems are provided for correcting artifacts in iterative reconstruction processes. In certain embodiments, weighting schemes may be applied such that less than all of the available scan or projection data is utilized in the iterative reconstruction. In this manner, inconsistencies in the data undergoing reconstruction may be reduced.
Abstract translation: 提供了用于在迭代重建过程中修正伪影的方法和系统。 在某些实施例中，可以应用加权方案，使得在迭代重建中使用少于全部可用的扫描或投影数据。 以这种方式，可能减少正在重建的数据中的不一致。
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公开(公告)号：US20160350944A1
公开(公告)日：2016-12-01
申请号：US14755387
申请日：2015-06-30
Inventor： Debashish Pal , Evgeny Drapkin , Jean-Baptiste Thibault , Somesh Srivastava , Ryan Thome , Madison Mcgaffin , Jeff Fessier , Donghwan Kim
CPC classification number: G06T11/005 , A61B6/032 , A61B6/5205 , A61B6/5258 , G06T7/0012 , G06T11/006 , G06T2207/10081 , G06T2211/424
Abstract: A method for iteratively reconstructing an image is provided. The method includes acquiring, with a detector, computed tomography (CT) imaging information. The method also includes generating, with at least one processor, sinogram information from the CT imaging information. Further, the method includes generating, with the at least one processor, image domain information from the CT imaging information. Also, the method includes updating the image using the sinogram information. The method further includes updating the image using the image domain information. Updating the image using the sinogram information and updating the image using the image domain information are performed separately and alternately in an iterative fashion.
Abstract translation: 提供了一种用于迭代重建图像的方法。 该方法包括用检测器获取计算机断层摄影（CT）成像信息。 该方法还包括利用至少一个处理器从CT成像信息生成正弦图信息。 此外，该方法包括利用至少一个处理器从CT成像信息生成图像域信息。 此外，该方法包括使用正弦图信息更新图像。 该方法还包括使用图像域信息更新图像。 使用图像信息更新图像并使用图像域信息更新图像以迭代的方式分别且交替地执行。
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20.发明申请公开(公告)号：US20140205171A1
公开(公告)日：2014-07-24
申请号：US14223353
申请日：2014-03-24
Applicant: GENERAL ELECTRIC COMPANY
Inventor： Kai Zeng , Bruno Kristiaan Bernard De Man , Jean-Baptiste Thibault
IPC: G06T5/00
CPC classification number: G06T5/001 , A61B6/03 , A61B6/032 , A61B6/5205 , A61B6/5258 , G06T11/005 , G06T2211/424
Abstract: Methods and systems are provided for correcting artifacts in iterative reconstruction processes. In certain embodiments, weighting schemes may be applied such that less than all of the available scan or projection data is utilized in the iterative reconstruction. In this manner, inconsistencies in the data undergoing reconstruction may be reduced.
Abstract translation: 提供了用于在迭代重建过程中修正伪影的方法和系统。 在某些实施例中，可以应用加权方案，使得在迭代重建中使用少于全部可用的扫描或投影数据。 以这种方式，可能减少正在重建的数据中的不一致。
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