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1. 发明授权

US08867805B2 Method and system for reconstruction of tomographic images 有权
公开(公告)号：US08867805B2
公开(公告)日：2014-10-21
申请号：US13149698
申请日：2011-05-31
申请人： Thomas Matthew Benson , Bruno Kristiaan Bernard DeMan
发明人： Thomas Matthew Benson , Bruno Kristiaan Bernard DeMan
IPC分类号： G06K9/00 , G06T11/00
摘要： Approaches are described for addressing artifacts associated with iterative reconstruction of image data acquired using a cone-beam CT system. Such approaches include, but are not limited to, the use of asymmetric regularization during iterative reconstruction, the modulation of regularization strength for certain voxels, the modification of statistical weights, and/or the generation and use of synthesized data.

2. 发明申请

US20080187091A1 METHOD OF ITERATIVE RECONSTRUCTION FOR ENERGY DISCRIMINATING COMPUTED TOMOGRAPHY SYSTEMS 有权
标题翻译：用于能量分辨计算机图像系统的迭代重建方法
公开(公告)号：US20080187091A1
公开(公告)日：2008-08-07
申请号：US11672137
申请日：2007-02-07
申请人： Samit Kumar Basu , Bruno Kristiaan Bernard DeMan
发明人： Samit Kumar Basu , Bruno Kristiaan Bernard DeMan
IPC分类号： G01N23/087 , G06K9/00
CPC分类号： G01N23/046 , G01N2223/419
摘要： A new method extends iterated coordinate descent (“ICD”)—an optimization method employed in some statistical reconstruction algorithms—to handle material decomposition (“MD”) for energy discriminating computed tomography (“EDCT”) acquisitions.
摘要翻译：一种新的方法扩展了迭代坐标下降（“ICD”） - 在一些统计重建算法中采用的优化方法来处理能量鉴别计算机断层扫描（“EDCT”）采集的材料分解（“MD”）。

3. 发明授权

US07215731B1 Fast backprojection/reprojection with hexagonal segmentation of image 失效
标题翻译：快速反投影/再投影与六边形分割图像
公开(公告)号：US07215731B1
公开(公告)日：2007-05-08
申请号：US11164625
申请日：2005-11-30
申请人： Samit Kumar Basu , Bruno Kristiaan Bernard DeMan
发明人： Samit Kumar Basu , Bruno Kristiaan Bernard DeMan
IPC分类号： A61B6/03
CPC分类号： G06T11/006 , G06T2211/421 , Y10S378/901
摘要： A reprojection/backprojection technique and apparatus for carrying out such a technique provides a hierarchical solution to speeding-up reprojection and backprojection of tomographic images. In the context of reprojection, a tomographic image is divided into a series of subimages. Each subimage is shifted to the origin, projected at a reduced number of views, and then up-sampled and shifted back (in the sinogram space). The resulting sinograms are then combined to provide a single sinogram. This process is applied one or more times recursively. In the context of backprojection, the above steps are transposed such that a sinogram is divided into a series of subsinograms. The subsinograms are then shifted and decimated by a given decimation factor. The decimated subsinograms are then backprojected onto hexagonal tiles whereupon the tiles are composited into a final image.
摘要翻译：用于执行这种技术的再投影/反投影技术和装置提供了加速断层图像的再投影和反投影的分层解决方案。在再投射的背景下，断层图像被分成一系列子图像。每个子图像被移动到原点，以减少的视图投影，然后被上采样并向后移位（在正弦图空间中）。然后将所得的正弦图组合以提供单个正弦图。此过程一次或多次递归应用。在反投影的上下文中，将上述步骤转置成使得正弦图被划分成一系列子图。然后通过给定的抽取因子移位和抽取子图。然后将抽取的子图像反投影到六边形图块上，然后将图块合成为最终图像。

4. 发明授权

US09076255B2 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：US09076255B2
公开(公告)日：2015-07-07
申请号：US13149698
申请日：2011-05-31
申请人： Thomas Matthew Benson , Bruno Kristiaan Bernard DeMan
发明人： Thomas Matthew Benson , Bruno Kristiaan Bernard DeMan
IPC分类号： G06K9/00 , G06T11/00
CPC分类号： G06T11/006 , G06T2211/424 , G06T2211/432
摘要： Approaches are described for addressing artifacts associated with iterative reconstruction of image data acquired using a cone-beam CT system. Such approaches include, but are not limited to, the use of asymmetric regularization during iterative reconstruction, the modulation of regularization strength for certain voxels, the modification of statistical weights, and/or the generation and use of synthesized data.
摘要翻译：描述了用于寻址与使用锥束CT系统获取的图像数据的迭代重建相关联的伪影的方法。这些方法包括但不限于在迭代重建期间使用不对称正则化，对于某些体素的正则化强度的调制，统计权重的修改和/或合成数据的生成和使用。

5. 发明申请

US20120308101A1 METHOD AND SYSTEM FOR RECONSTRUCTION OF TOMOGRAPHIC IMAGES 有权
标题翻译：重建图像图像的方法和系统
公开(公告)号：US20120308101A1
公开(公告)日：2012-12-06
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。

6. 发明授权

US09237874B2 Method and system for non-invasive imaging of a target region 有权
标题翻译：目标区域非侵入性成像的方法和系统
公开(公告)号：US09237874B2
公开(公告)日：2016-01-19
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： G01T1/161 , A61B6/03 , G06T11/00 , A61B6/12 , A61B6/00 , A61B6/06
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。

7. 发明申请

US20120308099A1 METHOD AND SYSTEM FOR RECONSTRUCTION OF TOMOGRAPHIC IMAGES 有权
标题翻译：重建图像图像的方法和系统
公开(公告)号：US20120308099A1
公开(公告)日：2012-12-06
申请号：US13149698
申请日：2011-05-31
申请人： Thomas Matthew Benson , Bruno Kristiaan Bernard DeMan
发明人： Thomas Matthew Benson , Bruno Kristiaan Bernard DeMan
IPC分类号： G06K9/00
CPC分类号： G06T11/006 , G06T2211/424 , G06T2211/432
摘要： Approaches are described for addressing artifacts associated with iterative reconstruction of image data acquired using a cone-beam CT system. Such approaches include, but are not limited to, the use of asymmetric regularization during iterative reconstruction, the modulation of regularization strength for certain voxels, the modification of statistical weights, and/or the generation and use of synthesized data.
摘要翻译：描述了用于寻址与使用锥束CT系统获取的图像数据的迭代重建相关联的伪影的方法。这些方法包括但不限于在迭代重建期间使用不对称正则化，对于某些体素的正则化强度的调制，统计权重的修改和/或合成数据的生成和使用。

8. 发明申请

US20120155728A1 TOMOGRAPHIC ITERATIVE RECONSTRUCTION 有权
标题翻译： TOMOGRAPHIC迭代重建
公开(公告)号：US20120155728A1
公开(公告)日：2012-06-21
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
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。

9. 发明申请

US20110262054A1 SYSTEM AND METHOD FOR ITERATIVE IMAGE RECONSTRUCTION 有权
标题翻译：用于迭代图像重建的系统和方法
公开(公告)号：US20110262054A1
公开(公告)日：2011-10-27
申请号：US13174461
申请日：2011-06-30
申请人： Thomas Matthew Benson , Bruno Kristiaan Bernard DeMan , Lin Fu
发明人： Thomas Matthew Benson , Bruno Kristiaan Bernard DeMan , Lin Fu
IPC分类号： G06K9/40
CPC分类号： G01N23/046 , A61B6/03 , G01N2223/419 , G06T11/006 , G06T2211/424
摘要： Methods are provided for iteratively reconstructing an image signal to generate a reconstructed image signal. In one embodiment, sub-iterations of each iteration are performed on pixel or voxel subsets. The subsets may be composed of neighboring or spatially separated pixel or voxels and may extend in the z-direction. In one embodiment, an update step of the iterative reconstruction involves the direct inversion of an approximation of a Hessian matrix associated with the respective subsets. In further embodiments, non-negativity or other limitations or constraints on update values may be enforced.
摘要翻译：提供了用于迭代重建图像信号以产生重建图像信号的方法。在一个实施例中，对像素或体素子集执行每次迭代的子迭代。子集可以由相邻或空间上分离的像素或体元组成，并且可以在z方向上延伸。在一个实施例中，迭代重建的更新步骤包括与相应子集相关联的Hessian矩阵的近似的直接反转。在另外的实施例中，可以执行非消极性或对更新值的其他限制或限制。

10. 发明授权

US08031828B1 Method and apparatus for computed tomography 有权
标题翻译：计算机断层扫描的方法和装置
公开(公告)号：US08031828B1
公开(公告)日：2011-10-04
申请号：US12771875
申请日：2010-04-30
申请人： Bruno Kristiaan Bernard DeMan , Jiang Hsieh , Jed Douglas Pack , Kai Zeng
发明人： Bruno Kristiaan Bernard DeMan , Jiang Hsieh , Jed Douglas Pack , Kai Zeng
IPC分类号： A61B6/00
CPC分类号： G06T11/005 , A61B6/027 , G06F19/00 , G06T2211/432
摘要： In one embodiment, a first set of projection data is acquired using a first portion of a detector and a second set of projection data is acquired using a second portion of the detector. The second set of projection data is supplemented based upon the first set of projection data to generate a supplemented set of projection data. A volumetric image may be generated using the supplemented set of projection data.
摘要翻译：在一个实施例中，使用检测器的第一部分获取第一组投影数据，并且使用检测器的第二部分获取第二组投影数据。基于第一组投影数据补充第二组投影数据，以生成补充的一组投影数据。可以使用补充的投影数据集生成体积图像。

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