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41. 发明授权

US07889835B2 System and method for detecting an object by dynamically adjusting computational load 有权
标题翻译：通过动态调整计算负荷来检测物体的系统和方法
公开(公告)号：US07889835B2
公开(公告)日：2011-02-15
申请号：US10737887
申请日：2003-12-18
申请人： Robert August Kaucic , Ricardo Scott Avila , Samit Kumar Basu , Forrest Frank Hopkins
发明人： Robert August Kaucic , Ricardo Scott Avila , Samit Kumar Basu , Forrest Frank Hopkins
IPC分类号： G01N23/04 , A61B6/03
CPC分类号： G01V5/0016 , G01V5/005 , Y10S378/901
摘要： A system and method for ascertaining the identity of an object within an enclosed article. The system includes an acquisition subsystem, a reconstruction subsystem, a computer-aided detection (CAD) subsystem, and an alarm resolution subsystem. 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. A feedback loop between the reconstruction and CAD subsystems allows for continued, more extensive analysis of the object. Other information, such as risk variables or trace chemical detection information may be communicated to the CAD subsystem to dynamically adjust the computational load of the 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。该系统包括采集子系统，重建子系统，计算机辅助检测（CAD）子系统和报警解析子系统。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。重建和CAD子系统之间的反馈循环允许对对象进行持续更广泛的分析。其他信息，如风险变量或痕量化学检测信息可以传达给CAD子系统，以动态调整分析的计算负荷。

42. 发明授权

US07881426B2 Method and system for performing a scan of an object 有权
标题翻译：执行对象扫描的方法和系统
公开(公告)号：US07881426B2
公开(公告)日：2011-02-01
申请号：US12393591
申请日：2009-02-26
申请人： Samit Kumar Basu , Jian Gao , Steven Leslie Hills , Eugene Alex Ingerman , Pierfrancesco Landolfi , Sussan Pourjavid-Granfors
发明人： Samit Kumar Basu , Jian Gao , Steven Leslie Hills , Eugene Alex Ingerman , Pierfrancesco Landolfi , Sussan Pourjavid-Granfors
IPC分类号： A61B6/03 , H05G1/30 , G01N23/083
CPC分类号： G01V5/005 , A61B6/027
摘要： A method for generating an image of an object using a scanning system includes performing a first portion of a scan in a first scanning mode to acquire a first dataset, receiving a halt command for a conveyor within the scanning system, decelerating the conveyor to a halt based on the halt command using a conveyor controller, and, when the object is present within an examination region after the conveyor has halted, performing a second portion of the scan in a second scanning mode to acquire a second dataset. The second scanning mode is different than the first scanning mode. The method also includes reconstructing the first dataset using a first reconstruction algorithm and reconstructing the second dataset using a second reconstruction algorithm. The second reconstruction algorithm is different than the first reconstruction algorithm. The image is generated using the first reconstructed dataset and the second reconstructed dataset.
摘要翻译：使用扫描系统生成物体的图像的方法包括以第一扫描模式执行扫描的第一部分以获取第一数据集，在扫描系统内接收用于输送机的停止命令，使输送机减速停止基于使用输送机控制器的停止命令，并且当所述物体在所述输送机停止之后存在于检查区域内时，以第二扫描模式执行所述扫描的第二部分以获取第二数据集。第二扫描模式与第一扫描模式不同。该方法还包括使用第一重建算法重构第一数据集，并使用第二重构算法重构第二数据集。第二种重建算法与第一种重建算法不同。使用第一重建数据集和第二重构数据集生成图像。

43. 发明授权

US07835486B2 Acquisition and reconstruction of projection data using a stationary CT geometry 有权
标题翻译：使用固定CT几何获取和重建投影数据
公开(公告)号：US07835486B2
公开(公告)日：2010-11-16
申请号：US11726023
申请日：2007-03-20
申请人： Samit Kumar Basu , Bruno De Man , Jed Douglas Pack , Xiaoye Wu , Zhye Yin , Peter Michael Edic
发明人： Samit Kumar Basu , Bruno De Man , Jed Douglas Pack , Xiaoye Wu , Zhye Yin , Peter Michael Edic
IPC分类号： G01N23/083
CPC分类号： G01T1/2985 , A61B6/027
摘要： Systems and methods are provided for acquiring and reconstructing projection data that is mathematically complete or sufficient using a computed tomography (CT) system having stationary distributed X-ray sources and detector arrays. In one embodiment, a distributed source is provided as arcuate segments offset in the X-Y plane and along the Z-axis.
摘要翻译：提供了系统和方法，用于使用具有固定分布式X射线源和检测器阵列的计算机断层摄影（CT）系统来获取和重建数学上完整或足够的投影数据。在一个实施例中，分布式源被提供为在X-Y平面和Z轴上偏移的弧形段。

44. 发明申请

US20100278296A1 METHOD FOR ENERGY SENSITIVE COMPUTED TOMOGRAPHY USING CHECKERBOARD FILTERING 有权
标题翻译：使用检查板过滤的能量敏感计算机图像的方法
公开(公告)号：US20100278296A1
公开(公告)日：2010-11-04
申请号：US12432225
申请日：2009-04-29
申请人： Peter Michael Edic , Colin Richard Wilson , Samit Kumar Basu
发明人： Peter Michael Edic , Colin Richard Wilson , Samit Kumar Basu
IPC分类号： H05G1/60 , G21K3/00
CPC分类号： G21K1/10 , A61B6/032 , A61B6/4035 , A61B6/482 , G01N2223/419 , G01N2223/423
摘要： Methods for energy-sensitive computed tomography systems that use checkerboard filtering. A method of enhancing image analysis of projection data acquired using a detector configured with a checkerboard filter includes disposing in a system a detector to receive a transmitted beam of X-rays traversing through an object, where the system is configured so the detector receives both high- and one of total- and low-energy projection data; receiving the high- and one of total- and low-energy projection data at the detector; and then estimating an effective atomic number of the object and/or processing the projection data so as to mitigate reconstruction artifacts. The present invention has been described in terms of specific embodiment(s), and it is recognized that equivalents, alternatives, and modifications, aside from those expressly stated, are possible and within the scope of the appended claims.
摘要翻译：使用棋盘过滤的能量敏感计算机断层摄影系统的方法。使用配置有棋盘滤波器的检测器获取的投影数据的图像分析增强方法包括在系统中设置检测器以接收穿过物体的X射线的透射束，其中系统配置为使得检测器接收高 - 和总能量和低能量投影数据之一; 在检测器处接收高能量投影数据和低能量投影数据之一; 然后估计对象的有效原子数和/或处理投影数据，以便减轻重建伪像。已经根据具体实施例描述了本发明，并且认识到除了明确说明的那些之外的等同物，替代方案和修改是可能的并且在所附权利要求的范围内。

45. 发明申请

US20100215144A1 METHOD AND SYSTEM FOR PERFORMING A SCAN OF AN OBJECT 有权
标题翻译：用于执行对象扫描的方法和系统
公开(公告)号：US20100215144A1
公开(公告)日：2010-08-26
申请号：US12393591
申请日：2009-02-26
申请人： Samit Kumar Basu , Jian Gao , Steven Leslie Hills , Eugene Alex Ingerman , Pierfrancesco Landolfi , Sussan Pourjavid-Granfors
发明人： Samit Kumar Basu , Jian Gao , Steven Leslie Hills , Eugene Alex Ingerman , Pierfrancesco Landolfi , Sussan Pourjavid-Granfors
IPC分类号： H05G1/60
CPC分类号： G01V5/005 , A61B6/027
摘要： A method for generating an image of an object using a scanning system includes performing a first portion of a scan in a first scanning mode to acquire a first dataset, receiving a halt command for a conveyor within the scanning system, decelerating the conveyor to a halt based on the halt command using a conveyor controller, and, when the object is present within an examination region after the conveyor has halted, performing a second portion of the scan in a second scanning mode to acquire a second dataset. The second scanning mode is different than the first scanning mode. The method also includes reconstructing the first dataset using a first reconstruction algorithm and reconstructing the second dataset using a second reconstruction algorithm. The second reconstruction algorithm is different than the first reconstruction algorithm. The image is generated using the first reconstructed dataset and the second reconstructed dataset.
摘要翻译：使用扫描系统生成物体的图像的方法包括以第一扫描模式执行扫描的第一部分以获取第一数据集，在扫描系统内接收用于输送机的停止命令，使输送机减速停止基于使用输送机控制器的停止命令，并且当所述物体在所述输送机停止之后存在于检查区域内时，以第二扫描模式执行所述扫描的第二部分以获取第二数据集。第二扫描模式与第一扫描模式不同。该方法还包括使用第一重建算法重构第一数据集，并使用第二重构算法重构第二数据集。第二种重建算法与第一种重建算法不同。使用第一重建数据集和第二重构数据集生成图像。

46. 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。

47. 发明授权

US07696483B2 High DQE photon counting detector using statistical recovery of pile-up events 失效
标题翻译：高DQE光子计数检测器采用统计恢复堆积事件
公开(公告)号：US07696483B2
公开(公告)日：2010-04-13
申请号：US11837328
申请日：2007-08-10
申请人： John Eric Tkaczyk , Samit Kumar Basu , Wen Li , Yanfeng Du
发明人： John Eric Tkaczyk , Samit Kumar Basu , Wen Li , Yanfeng Du
IPC分类号： G01T1/24
CPC分类号： G01T1/171 , G01T1/247 , G01T1/249
摘要： A photon-counting detector includes a direct conversion material and a data acquisition system with a first comparator having a first signal level threshold indicative of a noise level of a spectrum of photons, the first comparator configured to output a count when the electrical signal level exceeds the first signal level threshold, and a second comparator having a second signal level threshold indicative of the maximum energy of the spectrum of photons, the second comparator configured to output a count when the electrical signal exceeds the second signal level threshold where a photon count is determined based on the counts from the first and second comparators.
摘要翻译：光子计数检测器包括直接转换材料和具有第一比较器的数据采集系统，第一比较器具有指示光子谱的噪声电平的第一信号电平阈值，第一比较器被配置为当电信号电平超过时输出计数第一信号电平阈值和具有指示光子谱的最大能量的第二信号电平阈值的第二比较器，第二比较器被配置为当电信号超过第二信号电平阈值时输出计数，其中光子计数是基于来自第一和第二比较器的计数确定。

48. 发明授权

US07606347B2 Photon counting x-ray detector with overrange logic control 有权
标题翻译：光子计数x射线探测器与超量程逻辑控制
公开(公告)号：US07606347B2
公开(公告)日：2009-10-20
申请号：US11744292
申请日：2007-05-04
申请人： John Eric Tkaczyk , Jonathan D. Short , James Wilson Rose , Xiaoye Wu , Samit Kumar Basu
发明人： John Eric Tkaczyk , Jonathan D. Short , James Wilson Rose , Xiaoye Wu , Samit Kumar Basu
IPC分类号： A61B6/03
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。

49. 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。

50. 发明申请

US20080095300A1 System and method for iterative reconstruction using parallel processing 审中-公开
标题翻译：使用并行处理的迭代重建的系统和方法
公开(公告)号：US20080095300A1
公开(公告)日：2008-04-24
申请号：US11543377
申请日：2006-10-05
申请人： Stephen Eric Zingelewicz , Austars Raymond Schnore , Walter Vincent Dixon , Samit Kumar Basu , Bruno De Man , William D. Smith
发明人： Stephen Eric Zingelewicz , Austars Raymond Schnore , Walter Vincent Dixon , Samit Kumar Basu , Bruno De Man , William D. Smith
IPC分类号： H05G1/60 , A61B6/00 , G01N23/00 , G21K1/12
CPC分类号： G01N23/04 , A61B6/032 , G06T11/006 , G06T15/005 , G06T2211/424 , G06T2211/428
摘要： A method and system are provided for processing an acquired image signal in parallel to generate a reconstructed image signal. In one embodiment, a processing component is provided comprising one or more field-programmable gate arrays configured as co-processors. Other aspects of the present technique provide a pipelined processor configured to forward- and back-project image data using the same data path and arithmetic units.
摘要翻译：提供一种用于并行处理获取的图像信号以产生重建图像信号的方法和系统。在一个实施例中，提供了包括配置为协处理器的一个或多个现场可编程门阵列的处理组件。本技术的其它方面提供了一种流水线处理器，其被配置为使用相同的数据路径和算术单元来转发和后投影图像数据。

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