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1. 发明申请

US20060120586A1 Method and system for extracting information about the cardiac cycle from CT projection data 有权
公开(公告)号：US20060120586A1
公开(公告)日：2006-06-08
申请号：US11003114
申请日：2004-12-03
申请人： Maria Iatrou , Jong Ye , Samit Basu , Bruno Kristiaan De Man , Peter Edic
发明人： Maria Iatrou , Jong Ye , Samit Basu , Bruno Kristiaan De Man , Peter Edic
IPC分类号： G06K9/00
CPC分类号： A61B6/032 , A61B6/027 , A61B6/503 , A61B6/5217 , A61B6/541 , G06T11/005 , G06T2211/412
摘要： A method for extracting information of a cardiac cycle from projection data is presented. The method provides for acquiring one or more sets of computed tomography (CT) projection data. Further, the method includes analyzing the one or sets of CT projection data to obtain a center of cardiac mass. Also, the method provides for estimating raw motion data representative of the motion of the center of cardiac mass from the one or more sets of CT projection data. In addition, the method includes processing the center of mass through time to extract a motion signal from the raw projection data. Also, the method provides for extracting the periodicity information from the motion signal.

2. 发明申请

US20050111610A1 Stationary computed tomography system and method 有权
标题翻译：固定计算机断层扫描系统和方法
公开(公告)号：US20050111610A1
公开(公告)日：2005-05-26
申请号：US10816064
申请日：2004-04-01
申请人： Bruno Kristiaan De Man , Samit Basu , Peter Edic , Robert Senzig , William Ross , Xiaoye Wu , Colin Wilson , Mark Vermilyea , Eugene Saragnese
发明人： Bruno Kristiaan De Man , Samit Basu , Peter Edic , Robert Senzig , William Ross , Xiaoye Wu , Colin Wilson , Mark Vermilyea , Eugene Saragnese
IPC分类号： A61B6/03 , G01N23/04 , G01T1/29 , G21K1/12 , A61B6/00 , G01N23/00 , G01T1/164 , H05G1/60
CPC分类号： A61B6/4275 , A61B6/027 , A61B6/03 , A61B6/032 , A61B6/4014 , G01N23/046 , G01N2223/419 , G01T1/2985
摘要： Configurations for stationary imaging systems are provided. The configurations may include combinations of various types of distributed sources of X-ray radiation, which generally include addressable emitter elements which may be triggered for emission in desired sequences and combinations. The sources may be ring-like, partial ring-like, or line-like (typically along a Z-axis), and so forth. Combinations of these are envisaged. Corresponding detectors may also be full ring detectors or partial ring detectors associated with the sources to provide sufficient coverage of imaging volumes and to provide the desired mathematical completeness of the collected data.
摘要翻译：提供固定成像系统的配置。这些配置可以包括各种类型的分布的X射线辐射源的组合，其通常包括可寻址的发射体元件，其可以以期望的顺序和组合被发射。源可以是环状，部分环状或线状（通常沿Z轴），等等。设想这些的组合。相应的检测器还可以是与源相关联的全环检测器或部分环检测器，以提供成像体积的足够覆盖并提供收集的数据的期望的数学完整性。

3. 发明申请

US20070217568A1 Method and apparatus for correcting motion in image reconstruction 有权
公开(公告)号：US20070217568A1
公开(公告)日：2007-09-20
申请号：US11804861
申请日：2007-05-21
申请人： Peter Edic , Maria Iatrou , Erdogan Cesmeli , Bruno Man , Samit Basu
发明人： Peter Edic , Maria Iatrou , Erdogan Cesmeli , Bruno Man , Samit Basu
IPC分类号： G01N23/00
CPC分类号： A61B6/541 , A61B6/032 , A61B6/4035 , A61B6/405 , A61B6/4241 , A61B6/482 , A61B6/503 , A61B6/563 , G01N23/046 , G01N2223/419 , G01N2223/612 , G06T5/003 , G06T5/50 , G06T7/246 , G06T11/005 , G06T2207/10081 , G06T2207/30004 , G06T2211/408 , G06T2211/412 , Y10S378/901
摘要： One or more techniques are provided for adapting a reconstruction process to account for the motion of an imaged object or organ, such as the heart. In particular, projection data of the moving object or organ is acquired using a slowly rotating CT gantry. Motion data may be determined from the projection data or from images reconstructed from the projection data. The motion data may be used to reconstruct motion-corrected images from the projection data. The motion-corrected images may be associated to form motion-corrected volume renderings.

4. 发明申请

US20050226364A1 Rotational computed tomography system and method 审中-公开
标题翻译：旋转计算机断层摄影系统及方法
公开(公告)号：US20050226364A1
公开(公告)日：2005-10-13
申请号：US10816015
申请日：2004-03-31
申请人： Bruno Kristiaan Bernard De Man , Samit Basu , Peter Edic , William Ross , Mark Vermilyea
发明人： Bruno Kristiaan Bernard De Man , Samit Basu , Peter Edic , William Ross , Mark Vermilyea
IPC分类号： A61B6/03 , G21K1/12 , A61B6/00 , G01N23/00 , H05G1/60
CPC分类号： A61B6/032 , A61B6/035 , A61B6/4014
摘要： Geometries and configurations are provided for CT systems in which rotational loading is reduced, permitting higher speeds and lighter structures to be implemented in the systems. In certain embodiments a distributed and addressable rotating radiation source is provided with a rotating detector. In other embodiments a distributed and addressable stationary radiation source is provided with a rotating detector. In yet other embodiments a distributed and addressable radiation source is provided that rotates with respect to a stationary detector. The sources may be ring-like, arcuate and/or lines extending at least in the Z-direction. Sources may include a large number of distributed emitters arranged in lines, arcs and one- or two-dimensional arrays.
摘要翻译：为CT系统提供几何和配置，其中旋转负载减小，允许在系统中实现更高的速度和更轻的结构。在某些实施例中，分布式和可寻址的旋转辐射源设置有旋转检测器。在其他实施例中，分布式和可寻址的固定辐射源设置有旋转检测器。在其他实施例中，提供了一种相对于静止检测器旋转的分布式和可寻址的辐射源。源可以是至少沿Z方向延伸的环状，弓形和/或线。源可以包括以线，弧和一维或二维阵列排列的大量分布式发射器。

5. 发明申请

US20050100127A1 Methods and apparatus for image reconstruction in distributed x-ray source CT systems 有权
公开(公告)号：US20050100127A1
公开(公告)日：2005-05-12
申请号：US10704179
申请日：2003-11-07
申请人： Qi Zhao , Peter Edic , Bruno Bernard De Man , Samit Basu
发明人： Qi Zhao , Peter Edic , Bruno Bernard De Man , Samit Basu
IPC分类号： A61B6/03 , G21K1/12 , A61B6/00 , G01N23/00 , H05G1/60
CPC分类号： A61B6/4014 , A61B6/032 , A61B6/4085 , Y10S378/901
摘要： A method for imaging an object that includes utilizing a computed tomography imaging apparatus having a distributed x-ray source to acquire samples of projection data of an object in angular and temporal space utilizing a predetermined sampling lattice. Acquired projection data is filtered utilizing a two-dimensional linear filter to produce filtered data, and the filtered data is then backprojected to obtain a reconstructed image of the object.

6. 发明申请

US20050286749A1 System and method for image reconstruction 有权
标题翻译：图像重建系统和方法
公开(公告)号：US20050286749A1
公开(公告)日：2005-12-29
申请号：US10874976
申请日：2004-06-23
申请人： Bruno De Man , Peter Edic , Samit Basu
发明人： Bruno De Man , Peter Edic , Samit Basu
IPC分类号： G06K9/00 , G06K9/40
CPC分类号： G06T11/005 , G06T2211/416 , G06T2211/421 , Y10S378/901
摘要： A method for reconstructing image data acquired by a computed tomography system is provided. The method comprises selecting a portion of image data to be reconstructed and determining a corresponding portion of projection data. An adaptive filter is computed and applied to the portion of projection data to generate a portion of adaptively-filtered projection data. The adaptive filter is computed based upon desired quality properties of the portion of image data. Finally, the portion of image data is reconstructed based upon the portion of adaptively-filtered projection data. The step of selecting, computing and reconstructing is repeated for every pixel or group of pixels comprising the image data.
摘要翻译：提供了一种重建由计算机断层摄影系统获取的图像数据的方法。该方法包括选择要重建的图像数据的一部分并确定投影数据的对应部分。计算自适应滤波器并将其应用于投影数据的一部分以生成自适应滤波投影数据的一部分。基于图像数据部分的期望质量特性来计算自适应滤波器。最后，基于自适应滤波投影数据的部分重建图像数据的部分。对于包括图像数据的每个像素或像素组重复选择，计算和重建的步骤。

7. 发明申请

US20050094771A1 Method and apparatus for calibrating volumetric computed tomography systems 失效
标题翻译：用于校准体积计算机断层摄影系统的方法和装置
公开(公告)号：US20050094771A1
公开(公告)日：2005-05-05
申请号：US10699087
申请日：2003-10-31
申请人： Samit Basu , Peter Edic , Bruno Bernard De Man
发明人： Samit Basu , Peter Edic , Bruno Bernard De Man
IPC分类号： A61B6/00 , A61B6/03 , G01D18/00
CPC分类号： A61B6/583 , A61B6/032
摘要： The present invention provides a method for determining a geometry of a scanning volumetric computed tomographic (CT) system having a rotation axis, a rotational plane, an x-ray source and a detector. The method includes scanning a phantom having a series of spatially separated discrete markers with the scanning volumetric computed tomographic system, wherein the markers are configured on a supporting structure of the phantom so as to permit separate identification of each marker in a collection of projection images. The method further includes locating images of the markers in each projection, using the located marker images to assign marker locations to tracks, and using the assigned tracks, determining a relative alignment between the detector, the source, and the rotation axis of the scanning volumetric computed tomographic system.
摘要翻译：本发明提供了一种用于确定具有旋转轴，旋转平面，x射线源和检测器的扫描体积计算机断层摄影（CT）系统的几何形状的方法。该方法包括用扫描体积计算机断层摄影系统扫描具有一系列空间分离的离散标记的体模，其中标记被配置在体模的支撑结构上，以允许在投影图像的集合中单独识别每个标记。该方法还包括使用定位的标记图像将标记的图像定位在每个投影中，以将标记位置分配给轨迹，并使用分配的轨迹，确定扫描体积的检测器，源和旋转轴之间的相对对准计算机断层摄影系统。

8. 发明申请

US20050031075A1 System and method for detecting an object 有权
标题翻译：用于检测物体的系统和方法
公开(公告)号：US20050031075A1
公开(公告)日：2005-02-10
申请号：US10743195
申请日：2003-12-22
申请人： Forrest Hopkins , Peter Edic , Samit Basu , Bruno De Man , James Leblanc , Xiaoye Wu , Deborah Walter , William Ross , Colin Wilson , Ricardo Avila , Robert Kaucic
发明人： Forrest Hopkins , Peter Edic , Samit Basu , Bruno De Man , James Leblanc , Xiaoye Wu , Deborah Walter , William Ross , Colin Wilson , Ricardo Avila , Robert Kaucic
IPC分类号： G01V5/00 , G01N23/04
CPC分类号： G01V5/0016 , A61B6/4035 , A61B6/4241 , A61B6/482 , G01V5/0041 , G01V5/005 , G06F19/00
摘要： A system and method for ascertaining the identity of an object within an enclosed article. The system includes an acquisition subsystem utilizing a stationary radiation source and detector, a reconstruction subsystem, a computer-aided detection (CAD) subsystem, and a 2D/3D visualization subsystem. The detector may be an energy discriminating detector. The acquisition subsystem communicates view data to the reconstruction subsystem, which reconstructs it into image data and communicates it to the CAD subsystem. The CAD subsystem analyzes the image data to ascertain whether it contains any area of interest. Any such area of interest data is sent to the reconstruction subsystem for further reconstruction, using more rigorous algorithms and further analyzed by the CAD subsystem. Other information, such as risk variables or trace chemical detection information may be communicated to the CAD subsystem to be included in its analysis.
摘要翻译：用于确定封闭物品内物体的身份的系统和方法。该系统包括利用固定辐射源和检测器，重建子系统，计算机辅助检测（CAD）子系统和2D / 3D可视化子系统的采集子系统。检测器可以是能量识别检测器。采集子系统将视图数据传送到重建子系统，将其重建为图像数据并将其传送到CAD子系统。 CAD子系统分析图像数据，以确定它是否包含任何感兴趣的区域。任何这样的感兴趣的数据区域被发送到重建子系统以进一步重建，使用更严格的算法并由CAD子系统进一步分析。其他信息，例如风险变量或痕量化学检测信息可以传达给CAD子系统以包含在其分析中。

9. 发明申请

US20060233295A1 Method and system for CT imaging using a distributed X-ray source and interpolation based reconstruction 有权
标题翻译：使用分布式X射线源和基于插值的重建进行CT成像的方法和系统
公开(公告)号：US20060233295A1
公开(公告)日：2006-10-19
申请号：US11108419
申请日：2005-04-18
申请人： Peter Edic , Samit Basu , Bruno De Man
发明人： Peter Edic , Samit Basu , Bruno De Man
IPC分类号： H05G1/60 , A61B6/00 , G01N23/00 , G21K1/12
CPC分类号： A61B6/4028 , A61B6/032 , A61B6/4085 , H05G1/52
摘要： A method for Computed Tomography (CT) imaging is provided. The method comprises rotating a gantry at a substantially slow rotation speed about a volume of interest. The gantry comprises a combination of X-ray source points. The X-ray source points comprise one or more discrete emission points and an arc of discrete or continuous X-ray source points. The method then comprises obtaining projection data from the combination of X-ray source points and performing a suitable reconstruction based on the projection data obtained from the combination of X-ray source points, to generate one or more reconstructed images.
摘要翻译：提供了一种计算机断层成像（CT）成像的方法。该方法包括以基本上慢的旋转速度围绕感兴趣的体积旋转台架。龙门架包括X射线源点的组合。 X射线源点包括离散或连续的X射线源点的一个或多个离散发射点和弧。然后，该方法包括从X射线源点的组合获得投影数据，并且基于从X射线源点的组合获得的投影数据执行适当的重建，以生成一个或多个重建图像。

10. 发明申请

US20060023832A1 Scatter control system and method for computed tomography 有权
标题翻译：计算机断层扫描的散射控制系统和方法
公开(公告)号：US20060023832A1
公开(公告)日：2006-02-02
申请号：US10903298
申请日：2004-07-29
申请人： Peter Edic , Bruno Bernard De Man , Mark Vermilyea , Christopher Unger , John Tkaczyk , James LeBlanc , Samit Basu , William Ross , Jonathan Short , Scott Zelakiewicz
发明人： Peter Edic , Bruno Bernard De Man , Mark Vermilyea , Christopher Unger , John Tkaczyk , James LeBlanc , Samit Basu , William Ross , Jonathan Short , Scott Zelakiewicz
IPC分类号： H05G1/60 , A61B6/00 , G01N23/00 , G21K1/12
CPC分类号： A61B6/032 , A61B6/4014 , A61B6/4028 , A61B6/4291 , A61B6/5282 , G21K1/025
摘要： Various configurations for scatter reduction and control are provided for CT imaging. These configurations include an imaging system having a stationary detector extending generally around a portion of an imaging volume and a distributed X-ray source placed proximal to the stationary detector for radiating an X-ray beam toward the stationary detector. A scatter control system is further provided that is configured to adaptively operate in cooperation with the stationary detector and the distributed X-ray source to focally align collimator septa contained therein to the X-ray beam at a given focal point and to provide X-ray beam scatter control.
摘要翻译：为CT成像提供了用于散射减少和控制的各种配置。这些配置包括成像系统，其具有大致围绕成像体积的一部分延伸的固定检测器，以及放置在固定检测器附近的分布式X射线源，用于向固定检测器辐射X射线束。还提供了一种散射控制系统，其被配置为与固定式检测器和分布式X射线源协作自适应地操作，以将给定焦点上的准直器隔片聚焦到X射线束，并提供X射线光束散射控制。

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