专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明申请

WO2012073167A1 ITERATIVE RECONSTRUCTION ALGORITHM WITH A CONSTANT VARIANCE BASED WEIGHTING FACTOR 审中-公开
标题翻译：基于恒定变量因子的迭代重构算法
公开(公告)号：WO2012073167A1
公开(公告)日：2012-06-07
申请号：PCT/IB2011/055307
申请日：2011-11-25
申请人： KONINKLIJKE PHILIPS ELECTRONICS N.V. , PHILIPS INTELLECTUAL PROPERTY & STANDARDS GMBH , BRENDEL, Bernhard Johannes , KOEHLER, Thomas , SCHMITT, Holger , BIPPUS, Rolf Dieter , PROKSA, Roland
发明人： BRENDEL, Bernhard Johannes , KOEHLER, Thomas , SCHMITT, Holger , BIPPUS, Rolf Dieter , PROKSA, Roland
IPC分类号： G06T11/00
CPC分类号： G06T11/003 , G06T11/006 , G06T2211/424
摘要： A method includes reconstructing measured projection data using an iterative statistical reconstruction algorithm that reduces image artifact caused by differences in variances in projections of the measured projection data used to update a voxel of the image for one or more voxels of the image. A reconstructor includes a processor that reconstructs measured projection data using an iterative statistical reconstruction algorithm that reduces or mitigates image artifact caused by differences in variances in projections used to update a voxel of the image for one or more voxels of the image. A computer readable storage medium encoded with computer executable instructions, which, when executed by a processor of a computer, cause the processor to: reduce image artifact caused by differences in variances in projections used to update a voxel of an image for one or more voxels of the image using an iterative statistical reconstruction algorithm.
摘要翻译：一种方法包括使用迭代统计重建算法来重建测量的投影数据，所述迭代统计重构算法减少由用于更新图像的一个或多个体素的图像的体素的测量投影数据的投影方差的差异引起的图像伪像。重构器包括使用迭代统计重构算法来重建测量的投影数据的处理器，其减少或减轻由用于更新图像的一个或多个体素的图像的体素的投影方差的差异引起的图像伪像。一种用计算机可执行指令编码的计算机可读存储介质，其在由计算机的处理器执行时使处理器能够：减少由用于更新一个或多个体素的图像的体素的投影方差的差异引起的图像伪像的图像使用迭代统计重建算法。

2. 发明申请

WO2011145040A1 EDGE-PRESERVING NOISE FILTERING 审中-公开
标题翻译：边缘保护噪声滤波
公开(公告)号：WO2011145040A1
公开(公告)日：2011-11-24
申请号：PCT/IB2011/052137
申请日：2011-05-16
申请人： KONINKLIJKE PHILIPS ELECTRONICS N.V. , PHILIPS INTELLECTUAL PROPERTY & STANDARDS GMBH , KOEHLER, Thomas , BRENDEL, Bernhard Johannes
发明人： KOEHLER, Thomas , BRENDEL, Bernhard Johannes
IPC分类号： G06T5/00 , G06T5/50
CPC分类号： G06T5/002 , G06T5/50 , G06T2207/10072 , G06T2207/10116 , G06T2207/20028 , G06T2207/20221
摘要： The invention relates to an image processing apparatus (1) comprising an image providing unit (2) for providing a first image of an object and a second image of the same object and a filtering unit (3) which filters the first image depending on a first degree of similarity between image values of the first image and on a second degree of similarity between image values of the second image. This allows filtering the first image depending on the likeliness that image values belong to the same part of the object, for example, to tissue or to bone material of the object, if the object is a human being or an animal, even if due to noise the image values of one of the first image and the second image are disturbed, thereby improving, for example, an edge preserving property of the filtering procedure.
摘要翻译：本发明涉及一种图像处理装置（1），包括：图像提供单元（2），用于提供对象的第一图像和同一对象的第二图像;以及滤波单元（3），其根据第一图像的图像值与第二图像的图像值之间的第二相似度之间的第一相似度。这允许根据图像值属于对象的相同部分的可能性来过滤第一图像，例如，如果对象是人或动物，即使是由于对象而是对象的组织或骨骼材料第一图像和第二图像之一的图像值被噪声干扰，从而改善了例如滤波过程的边缘保留特性。

3. 发明申请

WO2012080971A1 IMAGING SYSTEM FOR IMAGING A REGION OF INTEREST 审中-公开
标题翻译：用于成像区域的成像系统
公开(公告)号：WO2012080971A1
公开(公告)日：2012-06-21
申请号：PCT/IB2011/055689
申请日：2011-12-15
申请人： KONINKLIJKE PHILIPS ELECTRONICS N.V. , PHILIPS INTELLECTUAL PROPERTY & STANDARDS GMBH , PROKSA, Roland , BRENDEL, Bernhard Johannes , KOEHLER, Dr. Thomas
发明人： PROKSA, Roland , BRENDEL, Bernhard Johannes , KOEHLER, Dr. Thomas
IPC分类号： G06T11/00
CPC分类号： G06T11/003 , G06T11/006 , G06T2211/408 , G06T2211/424
摘要： The noise of a detection value acquired by an imaging system (30) can depend on the contributions of different components within a region of interest to be imaged, which has been traversed by radiation (4) causing the respective acquired detection value. This dependence is considered while iteratively reconstructing an image of the region of interest, wherein first component attenuation values, which correspond to elements of a first component within the region of interest, and second component attenuation values, which correspond to elements of a first component within the region of interest, are determined, wherein noise values are determined from the first component attenuation values and the second component attenuation values and wherein the noise values are used for updating the image. This consideration of the dependence of the noise of an acquired detection value on the different components improves the quality of the iteratively reconstructed image.
摘要翻译：由成像系统（30）获取的检测值的噪声可以取决于被成像的感兴趣区域内的不同部件的贡献，其已被辐射（4）穿过，导致相应的获取的检测值。考虑这种依赖性，同时迭代地重构感兴趣区域的图像，其中对应于感兴趣区域内的第一分量的元素的第一分量衰减值和对应于第一分量内的第一分量的元素的第二分量衰减值确定感兴趣区域，其中根据第一分量衰减值和第二分量衰减值确定噪声值，并且其中噪声值用于更新图像。对所获取的检测值的噪声对不同分量的依赖性的考虑改善了迭代重建图像的质量。

4. 发明申请

WO2013068888A1 ENLARGED ANGULAR GATING WINDOW C-ARM IMAGE ACQUISITION 审中-公开
标题翻译：放大角度GATING WINDOW C-ARM图像采集
公开(公告)号：WO2013068888A1
公开(公告)日：2013-05-16
申请号：PCT/IB2012/056054
申请日：2012-10-31
申请人： KONINKLIJKE PHILIPS ELECTRONICS N.V. , PHILIPS INTELLECTUAL PROPERTY&STANDARDS GMBH
发明人： GRASS, Michael , SCHÄFER, Dirk , BRENDEL, Bernhard Johannes , LORENZ, Cristian
IPC分类号： A61B6/02 , H01J35/10
CPC分类号： H05G1/02 , A61B6/022 , A61B6/4028 , A61B6/4441 , A61B6/4464 , A61B6/482 , A61B6/503 , A61B6/504 , A61B6/5288 , A61B6/541 , G01N23/04
摘要： The present invention relates to C-arm X-ray imaging. In order to provide C- arm CT image acquisition with an enlarged gating window, a C-arm structure (12) for X-ray imaging is provided, comprising a C-arm (32), a movable C-arm support (34), an X-ray source (36), and an X-ray detector (38). The C-arm comprises a first end (40) and a second end (42), wherein the X-ray source is mounted to the first end and the detector is mounted to the second end. The C-arm is mounted to the C-arm support such that the X-ray source and the detector are movable around an object (44) of interest on respective trajectories (46). The X-ray source comprises at least a first focal spot (48) and a second focal spot (50) spaced apart from each other with a focal spot distance (52) in an offset direction (54), which offset direction is aligned with the trajectory.
摘要翻译：本发明涉及C臂X射线成像。为了提供具有放大的门控窗口的C-臂CT图像采集，提供了用于X射线成像的C形臂结构（12），包括C形臂（32），可移动的C形臂支撑件（34），X射线源（36）和X射线检测器（38）。 C形臂包括第一端（40）和第二端（42），其中X射线源安装到第一端并且检测器安装到第二端。所述C形臂安装到所述C形臂支撑件上，使得所述X射线源和所述检测器可围绕相应轨迹（46）上的感兴趣对象（44）移动。所述X射线源包括至少第一焦斑（48）和第二焦斑（50），所述第一焦点（48）和第二焦点（50）在偏移方向（54）上具有焦点距离（52），所述偏移方向与所述第二焦斑轨迹。

5. 发明申请

WO2013088294A1 AUTOMATIC DETERMINATION OF REGULARIZATION FACTOR FOR ITERATIVE IMAGE RECONSTRUCTION WITH REGULARIZATION AND/OR IMAGE DE-NOISING 审中-公开
标题翻译：用于定期和/或图像消除的迭代图像重建的定期因子的自动确定
公开(公告)号：WO2013088294A1
公开(公告)日：2013-06-20
申请号：PCT/IB2012/056929
申请日：2012-12-04
申请人： KONINKLIJKE PHILIPS ELECTRONICS N.V. , PHILIPS INTELLECTUAL PROPERTY & STANDARDS GMBH
发明人： BERGNER, Frank , BRENDEL, Bernhard Johannes , KOEHLER, Thomas
IPC分类号： G06T11/00
CPC分类号： G06T5/00 , G06T11/006 , G06T2207/20004 , G06T2211/424
摘要： A processing component (122) processes images based on an iterative reconstruction algorithm with regularization and/or de-noising algorithm. The processing component includes a set point determiner (224) that determines a quality set point (216) between predetermined lower and upper quality bounds (226) based on a quality variable (228) indicative of an image quality of interest. The processing component further includes a comparator (214) that compares, each processing iteration, a quality metric of a current generated image with the quality set point and generates a difference value indicative of a difference between the quality metric and the quality set point. The processing component further includes a regularization factor updater (220) that generates an updated regularization factor for a next processing iteration based on a current value (222) of the regularization factor and at least the quality metric in response to the difference value indicating that the quality metric is outside of a predetermined range about the quality set point.
摘要翻译：处理组件（122）基于具有正则化和/或去噪算法的迭代重建算法处理图像。处理组件包括基于指示感兴趣的图像质量的质量变量（228）确定预定的下限和上限质量界限（226）之间的质量设定点（216）的设定点确定器（224）。处理组件还包括比较器（214），其将每个处理迭代将当前生成的图像的质量度量与质量设置点进行比较，并产生指示质量度量和质量设定点之间的差的差值。处理组件还包括正则化因子更新器（220），其基于正则化因子的当前值（222）生成用于下一个处理迭代的更新的正则化因子，并且至少响应于指示所述正则化因子的差值的质量度量质量指标在关于质量设定点的预定范围之外。

6. 发明公开

EP2572331A1 EDGE-PRESERVING NOISE FILTERING 审中-公开
标题翻译： EDGE维持噪声滤波
公开(公告)号：EP2572331A1
公开(公告)日：2013-03-27
申请号：EP11723710.7
申请日：2011-05-16
申请人： Koninklijke Philips Electronics N.V. , Philips Intellectual Property & Standards GmbH
发明人： KOEHLER, Thomas , BRENDEL, Bernhard Johannes
IPC分类号： G06T5/00 , G06T5/50
CPC分类号： G06T5/002 , G06T5/50 , G06T2207/10072 , G06T2207/10116 , G06T2207/20028 , G06T2207/20221
摘要： The invention relates to an image processing apparatus (1) comprising an image providing unit (2) for providing a first image of an object and a second image of the same object and a filtering unit (3) which filters the first image depending on a first degree of similarity between image values of the first image and on a second degree of similarity between image values of the second image. This allows filtering the first image depending on the likeliness that image values belong to the same part of the object, for example, to tissue or to bone material of the object, if the object is a human being or an animal, even if due to noise the image values of one of the first image and the second image are disturbed, thereby improving, for example, an edge preserving property of the filtering procedure.

7. 发明公开

EP2646985A1 ITERATIVE RECONSTRUCTION ALGORITHM WITH A CONSTANT VARIANCE BASED WEIGHTING FACTOR 审中-公开
标题翻译：带常数VAR基于权重因子迭代算法重建
公开(公告)号：EP2646985A1
公开(公告)日：2013-10-09
申请号：EP11797148.1
申请日：2011-11-25
申请人： Koninklijke Philips N.V. , Philips Intellectual Property & Standards GmbH
发明人： BRENDEL, Bernhard Johannes , KOEHLER, Thomas , SCHMITT, Holger , BIPPUS, Rolf Dieter , PROKSA, Roland
IPC分类号： G06T11/00
CPC分类号： G06T11/003 , G06T11/006 , G06T2211/424
摘要： A method includes reconstructing measured projection data using an iterative statistical reconstruction algorithm that reduces image artifact caused by differences in variances in projections of the measured projection data used to update a voxel of the image for one or more voxels of the image. A reconstructor includes a processor that reconstructs measured projection data using an iterative statistical reconstruction algorithm that reduces or mitigates image artifact caused by differences in variances in projections used to update a voxel of the image for one or more voxels of the image. A computer readable storage medium encoded with computer executable instructions, which, when executed by a processor of a computer, cause the processor to: reduce image artifact caused by differences in variances in projections used to update a voxel of an image for one or more voxels of the image using an iterative statistical reconstruction algorithm.

8. 发明授权

EP2652709B1 IMAGING SYSTEM FOR IMAGING A REGION OF INTEREST 有权转让
标题翻译：成像系统用于说明一个特殊区域
公开(公告)号：EP2652709B1
公开(公告)日：2015-06-17
申请号：EP11807779.1
申请日：2011-12-15
申请人： Koninklijke Philips N.V. , Philips Intellectual Property & Standards GmbH
发明人： PROKSA, Roland , BRENDEL, Bernhard Johannes , KOEHLER, Dr. Thomas
IPC分类号： G06T11/00
CPC分类号： G06T11/003 , G06T11/006 , G06T2211/408 , G06T2211/424

9. 发明公开

EP2652709A1 IMAGING SYSTEM FOR IMAGING A REGION OF INTEREST 有权转让
标题翻译：成像系统用于说明一个特殊区域
公开(公告)号：EP2652709A1
公开(公告)日：2013-10-23
申请号：EP11807779.1
申请日：2011-12-15
申请人： Koninklijke Philips N.V. , Philips Intellectual Property & Standards GmbH
发明人： PROKSA, Roland , BRENDEL, Bernhard Johannes , KOEHLER, Dr. Thomas
IPC分类号： G06T11/00
CPC分类号： G06T11/003 , G06T11/006 , G06T2211/408 , G06T2211/424
摘要： The noise of a detection value acquired by an imaging system (30) can depend on the contributions of different components within a region of interest to be imaged, which has been traversed by radiation (4) causing the respective acquired detection value. This dependence is considered while iteratively reconstructing an image of the region of interest, wherein first component attenuation values, which correspond to elements of a first component within the region of interest, and second component attenuation values, which correspond to elements of a first component within the region of interest, are determined, wherein noise values are determined from the first component attenuation values and the second component attenuation values and wherein the noise values are used for updating the image. This consideration of the dependence of the noise of an acquired detection value on the different components improves the quality of the iteratively reconstructed image.

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式