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11. 发明授权

US07760848B2 Method and system for generating a multi-spectral image of an object 有权
标题翻译：用于生成物体的多光谱图像的方法和系统
公开(公告)号：US07760848B2
公开(公告)日：2010-07-20
申请号：US11530288
申请日：2006-09-08
申请人： Bruno Kristiaan Bernard DeMan , Samit Kumar Basu
发明人： Bruno Kristiaan Bernard DeMan , Samit Kumar Basu
IPC分类号： A61B6/03
CPC分类号： G01N23/20 , A61B6/032 , A61B6/482 , Y10S378/901
摘要： A method for generating a multi-spectral image of an object is provided. The method comprises acquiring measurement data at a plurality of X-ray energy levels and defining a plurality of image voxels in one or more regions comprising the object. The method then comprises obtaining prior information associated with a plurality of image voxels comprising the object. The prior information is defined by a joint probability density function (PDF) between a plurality of basis components. The method further comprises reconstructing the measurement data to generate a multi-spectral reconstructed image of the object based on the prior information.
摘要翻译：提供了一种用于产生对象的多光谱图像的方法。该方法包括以多个X射线能级获取测量数据，并在包括对象的一个或多个区域中定义多个图像体素。该方法然后包括获得与包括对象的多个图像体素相关联的先前信息。先验信息由多个基础分量之间的联合概率密度函数（PDF）定义。该方法还包括根据先前的信息重建测量数据以产生对象的多光谱重建图像。

12. 发明授权

US07386088B2 Method and system for iterative image reconstruction 失效
标题翻译：迭代图像重建方法与系统
公开(公告)号：US07386088B2
公开(公告)日：2008-06-10
申请号：US10950786
申请日：2004-09-24
申请人： Bruno Kristiaan Bernard Deman , Samit Kumar Basu
发明人： Bruno Kristiaan Bernard Deman , Samit Kumar Basu
IPC分类号： A61B6/03
CPC分类号： G06T11/006 , G06T2211/424 , Y10S378/901
摘要： A method for iteratively reconstructing image data acquired by a computed tomography system is provided. The method comprises generating a calculated sinogram from an image estimate and generating an error sinogram based on the calculated sinogram and a measured sinogram. Then, one or more backprojections are performed, each based upon a reconstruction parameter. The reconstruction parameter impacts at least one of convergence speed and computational cost of each iterative step and corresponding reconstruction. A filtering step is performed prior to performing the one or more backprojections. Finally, the initial image is updated by adding corresponding results of the one or more backprojections to the image estimate to obtain the reconstructed image.
摘要翻译：提供了一种用于迭代重建由计算机断层摄影系统获取的图像数据的方法。该方法包括从图像估计生成计算出的正弦图，并基于计算的正弦图和测得的正弦图产生误差正弦图。然后，执行一个或多个反向投影，每个基于重建参数。重构参数影响每个迭代步骤的收敛速度和计算成本中的至少一个以及相应的重建。在执行一个或多个反投影之前执行过滤步骤。最后，通过将一个或多个反向投影的相应结果相加到图像估计来更新初始图像，以获得重建的图像。

13. 发明申请

US20080063135A1 METHOD AND SYSTEM FOR GENERATING A MULTI-SPECTRAL IMAGE OF AN OBJECT 有权
标题翻译：用于生成物体的多光谱图像的方法和系统
公开(公告)号：US20080063135A1
公开(公告)日：2008-03-13
申请号：US11530288
申请日：2006-09-08
申请人： Bruno Kristiaan Bernard DeMan , Samit Kumar Basu
发明人： Bruno Kristiaan Bernard DeMan , Samit Kumar Basu
IPC分类号： H05G1/60 , A61B6/00 , G01N23/00 , G21K1/12
CPC分类号： G01N23/20 , A61B6/032 , A61B6/482 , Y10S378/901
摘要： A method for generating a multi-spectral image of an object is provided. The method comprises acquiring measurement data at a plurality of X-ray energy levels and defining a plurality of image voxels in one or more regions comprising the object. The method then comprises obtaining prior information associated with a plurality of image voxels comprising the object. The prior information is defined by a joint probability density function (PDF) between a plurality of basis components. The method further comprises reconstructing the measurement data to generate a multi-spectral reconstructed image of the object based on the prior information.
摘要翻译：提供了一种用于产生对象的多光谱图像的方法。该方法包括以多个X射线能级获取测量数据，并在包括对象的一个或多个区域中定义多个图像体素。该方法然后包括获得与包括对象的多个图像体素相关联的先前信息。先验信息由多个基础分量之间的联合概率密度函数（PDF）定义。该方法还包括根据先前的信息重建测量数据以产生对象的多光谱重建图像。

14. 发明授权

US08971599B2 Tomographic iterative reconstruction 有权
标题翻译：层析迭代重建
公开(公告)号：US08971599B2
公开(公告)日：2015-03-03
申请号：US12973649
申请日：2010-12-20
申请人： Bruno Kristiaan Bernard DeMan , Thomas Matthew Benson , Lin Fu
发明人： Bruno Kristiaan Bernard DeMan , Thomas Matthew Benson , Lin Fu
IPC分类号： G06K9/00 , G06T11/00
CPC分类号： G06T11/006 , G06T2211/424
摘要： The present disclosure relates to iterative reconstruction of images. In certain embodiments, a deconvolution filter is used to approximate the inversion of a Hessian matrix associated with the reconstruction. In one such embodiment, the desired image is not reconstructed directly in the iterative process. Instead, an image is reconstructed that yields the desired image when filtered by the deconvolution filter.
摘要翻译：本公开涉及图像的迭代重建。在某些实施例中，使用去卷积滤波器近似与重建相关联的赫西矩阵的反演。在一个这样的实施例中，期望的图像不是在迭代过程中直接重构。相反，重构图像，其通过去卷积滤波器滤波时产生期望的图像。

15. 发明授权

US08805037B2 Method and system for reconstruction of tomographic images 有权
标题翻译：断层图像重建方法及系统
公开(公告)号：US08805037B2
公开(公告)日：2014-08-12
申请号：US13149702
申请日：2011-05-31
申请人： Jed Douglas Pack , Bruno Kristiaan Bernard DeMan , Paulo Ricardo dos Santos Mendonca , Kai Zeng
发明人： Jed Douglas Pack , Bruno Kristiaan Bernard DeMan , Paulo Ricardo dos Santos Mendonca , Kai Zeng
IPC分类号： G06K9/00
CPC分类号： G06T11/006 , G06T2211/421 , G06T2211/436
摘要： Approaches are described for generating an initial reconstruction of CT data acquired using a wide-cone system. In one implementation, frequency data may be patched in to a first scan, such as an axial scan, from a second scan, such as a helical scan. In one embodiment, an initial reconstruction may be processed (such as via a non-linear operation) to correct frequency omissions and/or errors in the reconstruction. Corrected frequency information may be utilized to improve the reconstructed image.
摘要翻译：描述了用于生成使用广锥系统获取的CT数据的初始重建的方法。在一个实施方式中，可以将频率数据从第二扫描（例如螺旋扫描）修补到第一扫描，例如轴向扫描。在一个实施例中，可以处理初始重建（诸如经由非线性操作）以校正重建中的频率遗漏和/或错误。可以利用校正的频率信息来改善重建图像。

16. 发明授权

US08731266B2 Method and system for correcting artifacts in image reconstruction 有权
标题翻译：用于校正图像重建中的伪影的方法和系统
公开(公告)号：US08731266B2
公开(公告)日：2014-05-20
申请号：US12640936
申请日：2009-12-17
申请人： Kai Zeng , Bruno Kristiaan Bernard DeMan , Jean-Baptiste Thibault
发明人： Kai Zeng , Bruno Kristiaan Bernard DeMan , Jean-Baptiste Thibault
IPC分类号： A61B6/03
CPC分类号： G06T5/001 , A61B6/03 , A61B6/032 , A61B6/5205 , A61B6/5258 , G06T11/005 , G06T2211/424
摘要： 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.
摘要翻译：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。

17. 发明授权

US08565502B2 Method and system for reconstruction of tomographic images 有权
标题翻译：断层图像重建方法及系统
公开(公告)号：US08565502B2
公开(公告)日：2013-10-22
申请号：US13149732
申请日：2011-05-31
申请人： Kai Zeng , Jed Douglas Pack , Bruno Kristiaan Bernard DeMan , Zhye Yin , Kyle Morgan Champley
发明人： Kai Zeng , Jed Douglas Pack , Bruno Kristiaan Bernard DeMan , Zhye Yin , Kyle Morgan Champley
IPC分类号： G06K9/00
CPC分类号： G06T11/008 , G06T2211/432
摘要： Approaches are described for generating an initial reconstruction of CT data acquired using a wide-cone system. The initial reconstruction may be processed (such as via a non-linear operation) to correct frequency omissions and/or errors in the reconstruction. Corrected frequency information may then be added to the reconstruction to improve the reconstructed image.
摘要翻译：描述了用于生成使用广锥系统获取的CT数据的初始重建的方法。可以处理初始重建（诸如经由非线性操作）以校正重建中的频率遗漏和/或错误。然后可以将校正的频率信息添加到重建中以改善重建的图像。

18. 发明授权

US08031829B2 Method for analytic reconstruction of cone-beam projection data for multi-source inverse geometry CT systems 有权
标题翻译：多源逆几何CT系统锥束投影数据分析重建方法
公开(公告)号：US08031829B2
公开(公告)日：2011-10-04
申请号：US11924829
申请日：2007-10-26
申请人： Zhye Yin , Bruno Kristiaan Bernard DeMan , Jed Douglas Pack
发明人： Zhye Yin , Bruno Kristiaan Bernard DeMan , Jed Douglas Pack
IPC分类号： A61B6/03
CPC分类号： G06T11/006 , A61B6/027 , G06T2211/421
摘要： A method for analytically reconstructing a multi-axial computed tomography (CT) dataset, acquired using one or more longitudinally-offset x-ray beams emitted from multiple x-ray sources is provided. The method comprises acquiring one or more CT axial projection datasets, wherein the CT axial projection datasets are acquired using less than a full scan of data. The method further comprises reconstructing the CT axial projection datasets to generate a reconstructed image volume. The reconstruction comprises back projecting one or more voxels comprising the multi-axial CT dataset, along one or more projection views, based upon a cone-angle weight determined for the voxels, wherein the cone-angle weight for the voxels is determined along a longitudinal direction.
摘要翻译：提供了一种用于分析重建使用从多个x射线源发射的一个或多个纵向偏移X射线束获取的多轴计算机断层摄影（CT）数据集的方法。该方法包括获取一个或多个CT轴向投影数据集，其中使用小于数据的全扫描获取CT轴向投影数据集。该方法还包括重建CT轴向投影数据集以产生重建的图像体积。重建包括基于为体素确定的锥角权重，沿着一个或多个投影视图反投影包括多轴CT数据集的一个或多个体元，其中，体素的锥角权重沿纵向方向。

19. 发明申请

US20090110259A1 METHOD FOR ANALYTIC RECONSTRUCTION OF CONE-BEAM PROJECTION DATA FOR MULTI-SOURCE INVERSE GEOMETRY CT SYSTEMS 有权
标题翻译：用于多源反演几何CT系统的锥形投影数据的分析重建方法
公开(公告)号：US20090110259A1
公开(公告)日：2009-04-30
申请号：US11924829
申请日：2007-10-26
申请人： Zhye Yin , Bruno Kristiaan Bernard DeMan , Jed Douglas Pack
发明人： Zhye Yin , Bruno Kristiaan Bernard DeMan , Jed Douglas Pack
IPC分类号： G06K9/00
CPC分类号： G06T11/006 , A61B6/027 , G06T2211/421
摘要： A method for analytically reconstructing a multi-axial computed tomography (CT) dataset, acquired using one or more longitudinally-offset x-ray beams emitted from multiple x-ray sources is provided. The method comprises acquiring one or more CT axial projection datasets, wherein the CT axial projection datasets are acquired using less than a full scan of data. The method further comprises reconstructing the CT axial projection datasets to generate a reconstructed image volume. The reconstruction comprises backprojecting one or more voxels comprising the multi-axial CT dataset, along one or more projection views, based upon a cone-angle weight determined for the voxels, wherein the cone-angle weight for the voxels is determined along a longitudinal direction.
摘要翻译：提供了一种用于分析重建使用从多个x射线源发射的一个或多个纵向偏移X射线束获取的多轴计算机断层摄影（CT）数据集的方法。该方法包括获取一个或多个CT轴向投影数据集，其中使用小于数据的全扫描获取CT轴向投影数据集。该方法还包括重建CT轴向投影数据集以产生重建的图像体积。重建包括基于针对体素确定的锥角权重，沿着一个或多个投影视图反投影包括多轴CT数据集的一个或多个体素，其中体素的锥角权重沿着纵向方向确定。

20. 发明申请

US20130284939A1 METHOD AND SYSTEM FOR NON-INVASIVE IMAGING OF A TARGET REGION 有权
标题翻译：目标区域非侵入式成像的方法和系统
公开(公告)号：US20130284939A1
公开(公告)日：2013-10-31
申请号：US13459585
申请日：2012-04-30
申请人： Bruno Kristiaan Bernard DeMan , James Vradenburg Miller , Floribertus P. M. Heukensfeldt Jansen
发明人： Bruno Kristiaan Bernard DeMan , James Vradenburg Miller , Floribertus P. M. Heukensfeldt Jansen
IPC分类号： G01T1/16
CPC分类号： A61B6/032 , A61B6/037 , A61B6/06 , A61B6/12 , A61B6/4021 , A61B6/4241 , A61B6/4417 , A61B6/469 , A61B6/482 , A61B6/488 , G06T11/005
摘要： Embodiments of systems, methods and non-transitory computer readable media for imaging are presented. Preliminary image data corresponding to a first FOV of a subject at a first resolution is acquired using an imaging system including one or more radiation sources and at least one hybrid detector, specifically using at least one section of the hybrid detector having the first resolution. The target ROI is identified using the preliminary image data. Further, the subject is positioned to align the target ROI along a designated axis. Additionally, parameters associated with the sources, the hybrid detector and/or an imaging system gantry are configured for acquiring target image data at a second resolution greater than the first resolution using at least one section of the hybrid detector having the second resolution. Further, one or more images corresponding to at least the target ROI are reconstructed using the target and/or the preliminary image data.
摘要翻译：提出了用于成像的系统，方法和非暂时计算机可读介质的实施例。使用包括一个或多个辐射源和至少一个混合检测器的成像系统，特别是使用具有第一分辨率的混合检测器的至少一个部分，获取与第一分辨率的对象的第一FOV相对应的初步图像数据。使用初步图像数据来识别目标ROI。此外，被摄体被定位成沿着指定轴对准目标ROI。另外，与源相关联的参数，混合检测器和/或成像系统台架被配置为使用具有第二分辨率的混合检测器的至少一个部分以大于第一分辨率的第二分辨率来获取目标图像数据。此外，使用目标和/或初步图像数据来重构与至少目标ROI相对应的一个或多个图像。

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