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1. 发明申请

US20060109950A1 METHOD AND SYSTEM OF CT DATA CORRECTION 有权
标题翻译： CT数据校正方法与系统
公开(公告)号：US20060109950A1
公开(公告)日：2006-05-25
申请号：US10904736
申请日：2004-11-24
申请人： Jerome Arenson , John Tkaczyk , David Ruimi , Oded Meirav , Evgeny Drapkin , Dmitry Samsonov , Lev Greenberg , Bruno De Man , Samit Basu , Xiaoye Wu , Yangeng Du
发明人： Jerome Arenson , John Tkaczyk , David Ruimi , Oded Meirav , Evgeny Drapkin , Dmitry Samsonov , Lev Greenberg , Bruno De Man , Samit Basu , Xiaoye Wu , Yangeng Du
IPC分类号： H05G1/60 , A61B6/00 , G01N23/00 , G21K1/12
CPC分类号： G01T1/1644 , A61B6/027 , A61B6/032 , A61B6/4241 , A61B6/482 , A61B6/583 , G01T1/1647 , G06T5/002 , G06T5/20 , G06T2207/10081 , G06T2207/30004 , G06T2207/30112 , Y10S378/901
摘要： An adaptive CT data acquisition system and technique is presented whereby radiation emitted for CT data acquisition is dynamically controlled to limit exposure to those detectors of a CT detector assembly that may be particularly susceptible to saturation during a given data acquisition. The data acquisition technique recognizes that for a given subject size and position that pre-subject filtering and collimating of a radiation beam may be insufficient to completely prevent detector saturation. Therefore, the present invention includes implementation of a number of CT data correction techniques for correcting otherwise unusable data of a saturated CT detector. These data correction techniques include a nearest neighbor correction, off-centered phantom correction, off-centered synthetic data correction, scout data correction, planar radiogram correction, and a number of others. The invention is applicable with energy discriminating CT systems as well as with conventional CT systems and other multi-energy CT systems, such as dual kVp-based systems.
摘要翻译：提出了一种自适应CT数据采集系统和技术，其中动态地控制用于CT数据采集的辐射，以限制在给定数据采集期间可能特别容易饱和的CT检测器组件的那些检测器的暴露。数据采集技术认识到，对于给定的主体大小和位置，预辐射滤波和辐射束的准直可能不足以完全防止检测器饱和。因此，本发明包括实现用于校正饱和CT检测器的其他不可用数据的多个CT数据校正技术。这些数据校正技术包括最近邻校正，偏心幻像校正，偏心合成数据校正，侦察数据校正，平面放射线图校正以及其他数目。本发明适用于能量识别CT系统以及常规CT系统和其他多能CT系统，例如基于双kVp的系统。

2. 发明申请

US20070140409A1 METHOD AND SYSTEM OF CT DATA CORRECTION 有权
标题翻译： CT数据校正方法与系统
公开(公告)号：US20070140409A1
公开(公告)日：2007-06-21
申请号：US11627144
申请日：2007-01-25
申请人： Jerome Arenson , David Ruimi , Evgeny Drapkin , Dmitry Samsonov , Bruno De Man , Samit Basu
发明人： Jerome Arenson , David Ruimi , Evgeny Drapkin , Dmitry Samsonov , Bruno De Man , Samit Basu
IPC分类号： H05G1/60 , A61B6/00 , G01N23/00 , G21K1/12
CPC分类号： G01T1/1644 , A61B6/027 , A61B6/032 , A61B6/4241 , A61B6/482 , A61B6/583 , G01T1/1647 , G06T5/002 , G06T5/20 , G06T2207/10081 , G06T2207/30004 , G06T2207/30112 , Y10S378/901
摘要： An adaptive CT data acquisition system and technique is presented whereby radiation emitted for CT data acquisition is dynamically controlled to limit exposure to those detectors of a CT detector assembly that may be particularly susceptible to saturation during a given data acquisition. The data acquisition technique recognizes that for a given subject size and position that pre-subject filtering and collimating of a radiation beam may be insufficient to completely prevent detector saturation. Therefore, the present invention includes implementation of a number of CT data correction techniques for correcting otherwise unusable data of a saturated CT detector. These data correction techniques include a nearest neighbor correction, off-centered phantom correction, off-centered synthetic data correction, scout data correction, planar radiogram correction, and a number of others. The invention is applicable with energy discriminating CT systems as well as with conventional CT systems and other multi-energy CT systems, such as dual kVp-based systems.
摘要翻译：提出了一种自适应CT数据采集系统和技术，其中动态地控制用于CT数据采集的辐射，以限制在给定数据采集期间可能特别容易饱和的CT检测器组件的那些检测器的暴露。数据采集技术认识到，对于给定的主体大小和位置，预辐射滤波和辐射束的准直可能不足以完全防止检测器饱和。因此，本发明包括实现多个用于校正饱和CT检测器的不可用数据的CT数据校正技术。这些数据校正技术包括最近邻校正，偏心幻像校正，偏心合成数据校正，侦察数据校正，平面放射线图校正以及其他数目。本发明适用于能量识别CT系统以及常规CT系统和其他多能CT系统，例如基于双kVp的系统。

3. 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。

4. 发明申请

US20070206721A1 PHOTON COUNTING X-RAY DETECTOR WITH OVERRANGE LOGIC CONTROL 有权
标题翻译：具超声逻辑控制的光电计数X射线探测器
公开(公告)号：US20070206721A1
公开(公告)日：2007-09-06
申请号：US11744292
申请日：2007-05-04
申请人： John Tkaczyk , Jonathan Short , James Rose , Xiaoye Wu , Samit Basu
发明人： John Tkaczyk , Jonathan Short , James Rose , Xiaoye Wu , Samit Basu
IPC分类号： G01N23/083
CPC分类号： A61B6/5205 , A61B6/032 , A61B6/4291 , G01T1/2018 , G01T1/242 , G01T1/243 , G01T1/249
摘要： A CT detector includes a first detector configured to convert radiographic energy to electrical signals representative of energy sensitive radiographic data and a second detector configured to convert radiographic energy to electrical signals representative of energy sensitive radiographic data and positioned to receive x-rays that pass through the first detector. A logic controller is electrically connected to the first detector and the second detector and is configured to receive a logic output signal from the second detector indicative of an amount of a saturation level of the first detector, compare the logic output signal to a threshold value, and output, based on the comparison, electrical signals from the first detector, the second detector, or a combination thereof to an image chain.
摘要翻译： CT检测器包括：第一检测器，其被配置为将射线照相能量转换成表示能量敏感射线照相数据的电信号;以及第二检测器，被配置为将放射线照相能量转换成表示能量敏感射线照相数据的电信号，并被定位成接收穿过第一检测器逻辑控制器电连接到第一检测器和第二检测器，并且被配置为从第二检测器接收指示第一检测器的饱和电平的量的逻辑输出信号，将逻辑输出信号与阈值进行比较，并且基于比较将来自第一检测器，第二检测器或其组合的电信号输出到图像链。

5. 发明授权

US07813473B2 Method and apparatus for generating temporally interpolated projections 有权
标题翻译：用于产生时间内插投影的方法和装置
公开(公告)号：US07813473B2
公开(公告)日：2010-10-12
申请号：US10625321
申请日：2003-07-23
申请人： Peter Michael Edic , Bruno De Man , Samit Basu
发明人： Peter Michael Edic , Bruno De Man , Samit Basu
IPC分类号： A61B6/03 , H05G1/62
CPC分类号： A61B6/4028 , A61B6/032 , A61B6/503 , G01N23/046 , G01N2223/419 , G01N2223/612 , G06T7/246 , G06T11/005 , G06T2211/412
摘要： A technique is provided for the temporal interpolation of a projection data set acquired of a dynamic object, such as a heart. The projection data set is acquired using a slowly rotating gantry and a distributed X-ray source. The projection data may be interpolated at each view position to a selected instant of time, such as relative to a cardiac phase. The resulting interpolated projection data characterize the projection data at each view location at any instant in time. The set of interpolated projection data may then be reconstructed to generate images and/or volume with improved temporal resolution.
摘要翻译：提供了用于对诸如心脏的动态对象获取的投影数据集的时间插值的技术。使用缓慢旋转的台架和分布式X射线源获取投影数据集。投影数据可以在每个视图位置被内插到所选择的时刻，例如相对于心脏相位。所产生的内插投影数据在任何时刻在每个视图位置表征投影数据。然后，可以对该组内插投影数据进行重建，以产生具有改进的时间分辨率的图像和/或体积。

6. 发明授权

US07382852B2 Method and apparatus for correcting motion in image reconstruction 有权
标题翻译：用于校正图像重建中运动的方法和装置
公开(公告)号：US07382852B2
公开(公告)日：2008-06-03
申请号：US11804861
申请日：2007-05-21
申请人： Peter Michael Edic , Maria Iatrou , Erdogan Cesmeli , Bruno De Man , Samit Basu
发明人： Peter Michael Edic , Maria Iatrou , Erdogan Cesmeli , Bruno De 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.
摘要翻译：提供一种或多种技术用于调整重建过程以解决成像对象或器官（例如心脏）的运动。特别地，使用缓慢旋转的CT台架来获取移动物体或器官的投影数据。可以从投影数据或从投影数据重建的图像确定运动数据。运动数据可用于从投影数据重建运动校正图像。可以将运动校正的图像相关联以形成运动校正的体积渲染。

7. 发明授权

US07639774B2 Method and apparatus for employing multiple axial-sources 失效
标题翻译：采用多个轴向源的方法和装置
公开(公告)号：US07639774B2
公开(公告)日：2009-12-29
申请号：US10744027
申请日：2003-12-23
申请人： Bruno De Man , Samit Basu
发明人： Bruno De Man , Samit Basu
IPC分类号： A61B6/03 , H05G1/60
CPC分类号： A61B6/032 , A61B6/4014 , G21K1/025
摘要： A technique is provided for improving z-axis coverage and/or reducing cone beam artifacts during CT imaging. Multiple X-ray emission points are provided along the z-axis. Some or all of the emission points may be concurrently active. X-rays from concurrently active emission points are collimated so that X-rays from two or more emission points do not overlap on the detector. In addition, different groups of concurrently activated emission points may be sequentially or alternately activated, in conjunction with collimation, to prevent the overlap of X-rays from different emission points on the detector. In this manner, The X-rays may be timed and collimated such that the respective streams of radiation become adjacent at different locations, such as at the detector, the isocenter, or edge of the field of view.
摘要翻译：提供了一种用于在CT成像期间改善z轴覆盖和/或减少锥束伪影的技术。沿z轴提供多个X射线发射点。一些或所有发射点可以同时有效。来自同时有效发射点的X射线被准直，使得来自两个或更多个发射点的X射线在检测器上不重叠。此外，不同组的同时激活的发射点可以与准直相关或交替地激活，以防止来自检测器上不同发射点的X射线的重叠。以这种方式，X射线可以被定时和准直，使得相应的辐射流在诸如检测器，等角点或视场边缘的不同位置处相邻。

8. 发明授权

US07333587B2 Method and system for imaging using multiple offset X-ray emission points 有权
标题翻译：使用多个偏移X射线发射点成像的方法和系统
公开(公告)号：US07333587B2
公开(公告)日：2008-02-19
申请号：US10789539
申请日：2004-02-27
申请人： Bruno De Man , Peter Michael Edic , Samit Basu
发明人： Bruno De Man , Peter Michael Edic , Samit Basu
IPC分类号： G01N23/00
CPC分类号： A61B6/032 , A61B6/027 , A61B6/4028 , A61B6/4085
摘要： A technique is provided for imaging a field of view using an X-ray source comprising two or more emission points. Each emission point is configured to emit a fan of radiation encompassing less than the entire field of view. The emission points are activated individually and rotate about the field of view, allowing respective streams of radiation to be emitted at various view angles about the field of view. The emission points, which may correspond to different radial regions of the field of view, may be differentially activated to emphasize a region of interest within the field of view. The multiple emission points may be extrapolated along the longitudinal axis in duplicate or offset configurations.
摘要翻译：提供了一种使用包括两个或更多个发射点的X射线源对视场成像的技术。每个发射点被配置为发射包含小于整个视场的辐射风扇。发射点被单独激活并围绕视场旋转，允许相应的辐射流以关于视场的各种视角发射。可以对应于视场的不同径向区域的发射点可以被差异地激活以强调视野范围内的感兴趣区域。多个发射点可以沿纵向轴线重复或偏移配置外推。

9. 发明授权

US07221728B2 Method and apparatus for correcting motion in image reconstruction 有权
标题翻译：用于校正图像重建中运动的方法和装置
公开(公告)号：US07221728B2
公开(公告)日：2007-05-22
申请号：US10625361
申请日：2003-07-23
申请人： Peter Michael Edic , Maria Iatrou , Erdogan Cesmeli , Bruno De Man , Samit Basu
发明人： Peter Michael Edic , Maria Iatrou , Erdogan Cesmeli , Bruno De Man , Samit Basu
IPC分类号： G01N23/04
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.
摘要翻译：提供一种或多种技术用于调整重建过程以解决成像对象或器官（例如心脏）的运动。特别地，使用缓慢旋转的CT台架来获取移动物体或器官的投影数据。可以从投影数据或从投影数据重建的图像确定运动数据。运动数据可用于从投影数据重建运动校正图像。可以将运动校正的图像相关联以形成运动校正的体积渲染。

10. 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。

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