公开(公告)号：US20110158498A1

公开(公告)日：2011-06-30

申请号：US12650116

申请日：2009-12-30

申请人： Baojun Li ,  Naveen Stephan Chandra ,  Jed Douglas Pack ,  Jiang Hsieh ,  Xiaoye Wu ,  Mary Sue Kulpins

发明人： Baojun Li ,  Naveen Stephan Chandra ,  Jed Douglas Pack ,  Jiang Hsieh ,  Xiaoye Wu ,  Mary Sue Kulpins

IPC分类号： G06K9/62

CPC分类号： G06T11/008 ,  G06T2211/408

摘要： A method is provided that includes acquiring a first set of image data from X-rays produced at a first energy level and a second set of image data from X-rays produced at a second energy level. The method includes generating a first noise mask for a first basis material and a second noise mask for a second basis material and removing pixels corresponding to cross contaminating structural information from the first noise mask and the second noise mask. The method includes processing a first materially decomposed image generated from the first set of image data and the second set of digital data using the second noise mask after removal of the cross contaminating structural information and processing a second MD image generated from the first set of image data and the second set of digital data using the first noise mask after removal of the cross contaminating structural information.

摘要翻译： 提供了一种方法，其包括从在第二能量级产生的X射线以从第一能量级产生的X射线和第二组图像数据获取第一组图像数据。 该方法包括为第一基材生成第一噪声掩模和第二基材的第二噪声掩模，并从第一噪声掩模和第二噪声掩模去除对应于交叉污染结构信息的像素。 该方法包括在去除交叉污染的结构信息之后处理从第一组图像数据和第二组数字数据生成的第一物理分解图像，并且处理从第一组图像生成的第二MD图像 数据和第二组数字数据，在去除交叉污染结构信息之后使用第一噪声掩模。

公开(公告)号：US08396273B2

公开(公告)日：2013-03-12

申请号：US12650116

申请日：2009-12-30

申请人： Baojun Li ,  Naveen Stephan Chandra ,  Jed Douglas Pack ,  Jiang Hsieh ,  Xiaoye Wu ,  Mary Sue Kulpins

发明人： Baojun Li ,  Naveen Stephan Chandra ,  Jed Douglas Pack ,  Jiang Hsieh ,  Xiaoye Wu ,  Mary Sue Kulpins

IPC分类号： G06K9/00

CPC分类号： G06T11/008 ,  G06T2211/408

摘要： A method is provided that includes acquiring a first set of image data from X-rays produced at a first energy level and a second set of image data from X-rays produced at a second energy level. The method includes generating a first noise mask for a first basis material and a second noise mask for a second basis material and removing pixels corresponding to cross contaminating structural information from the first noise mask and the second noise mask. The method includes processing a first materially decomposed image generated from the first set of image data and the second set of digital data using the second noise mask after removal of the cross contaminating structural information and processing a second MD image generated from the first set of image data and the second set of digital data using the first noise mask after removal of the cross contaminating structural information.

摘要翻译： 提供了一种方法，其包括从在第二能量级产生的X射线以从第一能量级产生的X射线和第二组图像数据获取第一组图像数据。 该方法包括为第一基材生成第一噪声掩模和第二基材的第二噪声掩模，并从第一噪声掩模和第二噪声掩模去除对应于交叉污染结构信息的像素。 该方法包括在去除交叉污染的结构信息之后处理从第一组图像数据和第二组数字数据生成的第一物理分解图像，并且处理从第一组图像生成的第二MD图像 数据和第二组数字数据，在去除交叉污染结构信息之后使用第一噪声掩模。

公开(公告)号：US20130003912A1

公开(公告)日：2013-01-03

申请号：US13174485

申请日：2011-06-30

申请人： Bruno Kristiaan Bernard De Man ,  Jiang Hsieh ,  Naveen Stephan Chandra ,  Jiahua Fan ,  Jed Douglas Pack

发明人： Bruno Kristiaan Bernard De Man ,  Jiang Hsieh ,  Naveen Stephan Chandra ,  Jiahua Fan ,  Jed Douglas Pack

IPC分类号： A61B6/03 ,  G01N23/04

CPC分类号： A61B6/482 ,  A61B6/032 ,  A61B6/405

摘要： The subject matter disclosed herein relates to X-ray imaging systems, and more specifically, to multi-energy computed tomography (CT) X-ray imaging systems. In an embodiment, a multi-energy computed tomography (CT) imaging system includes an X-ray source that emits X-rays upon the application of a low stable bias, a high stable bias, and transitional biases between the low stable bias and the high stable bias. The imaging system also includes an X-ray detector configured to produce an electrical signal corresponding to the intensity of the X-rays emitted by the X-ray source that reach the X-ray detector. The imaging system also includes data processing circuitry configured to acquire a first set of data corresponding to the electrical signal produced by the X-ray detector only when the low stable bias or the high stable bias is applied to the X-ray source. The imaging system also includes a processor configured to process the first set of acquired data and construct one or more multi-energy CT images.

摘要翻译： 本文公开的主题涉及X射线成像系统，更具体地，涉及多能计算机断层摄影（CT）X射线成像系统。 在一个实施例中，多能量计算机断层摄影（CT）成像系统包括在施加低稳定偏压，高稳定偏差以及低稳定偏压和低稳定偏差之间的过渡偏差时发射X射线的X射线源 高稳定偏差。 成像系统还包括：X射线检测器，被配置为产生对应于由X射线源发射的X射线的强度的电信号，该X射线到达X射线检测器。 成像系统还包括数据处理电路，其被配置为仅当低稳定偏压或高稳定偏压施加到X射线源时才获取对应于由X射线检测器产生的电信号的第一组数据。 成像系统还包括被配置为处理第一组获取的数据并构造一个或多个多能CT图像的处理器。

公开(公告)号：US20120069952A1

公开(公告)日：2012-03-22

申请号：US12883631

申请日：2010-09-16

申请人： Xiaoye Wu ,  Dan Xu ,  Naveen Chandra ,  Zhanyu Ge ,  Jiang Hsieh ,  Daniel David Harrison ,  Mary Sue Kulpins

发明人： Xiaoye Wu ,  Dan Xu ,  Naveen Chandra ,  Zhanyu Ge ,  Jiang Hsieh ,  Daniel David Harrison ,  Mary Sue Kulpins

IPC分类号： A61B6/03

CPC分类号： A61B6/583 ,  A61B6/032 ,  A61B6/482 ,  A61B6/585

摘要： An imaging system includes an x-ray source that emits a beam of x-rays toward an object, a detector that receives high frequency electromagnetic energy attenuated by the object, a data acquisition system (DAS) operably connected to the detector, and a computer operably connected to the DAS. The computer is programmed to compute detector coefficients based on a static low kVp measurement and a static high kVp measurement, capture incident spectra at high and low kVp during fast kVp switching, compute effective X-ray incident spectra at high and low kVp during fast kVp switching using the captured incident spectra, scan a water phantom and normalize the computed detector coefficients to water, adjust the computed effective X-ray incident spectra based on the normalized detector coefficients, compute basis material decomposition functions using the adjusted X-ray incident spectra, and generate one or more basis material density images using the computed basis material decomposition functions.

摘要翻译： 成像系统包括：x射线源，其朝向物体发射X射线束;接收被物体衰减的高频电磁能的检测器;可操作地连接到检测器的数据采集系统（DAS）;以及计算机 可操作地连接到DAS。 计算机被编程为基于静态低kVp测量和静态高kVp测量来计算检测器系数，在快速kVp切换期间在高和低kVp处捕获入射光谱，在快速kVp期间计算高和低kVp处的有效X射线入射光谱 使用捕获的入射光谱切换，扫描水体模型并将计算的检测器系数归一化为水，基于归一化的检测器系数调整计算的有效X射线入射光谱，使用调整的X射线入射光谱计算基础材料分解函数， 并使用所计算的基础材料分解函数生成一个或多个基础材料密度图像。

公开(公告)号：US08315352B2

公开(公告)日：2012-11-20

申请号：US12883631

申请日：2010-09-16

申请人： Xiaoye Wu ,  Dan Xu ,  Naveen Chandra ,  Zhanyu Ge ,  Jiang Hsieh ,  Daniel David Harrison ,  Mary Sue Kulpins

发明人： Xiaoye Wu ,  Dan Xu ,  Naveen Chandra ,  Zhanyu Ge ,  Jiang Hsieh ,  Daniel David Harrison ,  Mary Sue Kulpins

IPC分类号： A61B6/00 ,  H05G1/64 ,  G06K9/00

CPC分类号： A61B6/583 ,  A61B6/032 ,  A61B6/482 ,  A61B6/585

摘要： An imaging system includes an x-ray source that emits a beam of x-rays toward an object, a detector that receives high frequency electromagnetic energy attenuated by the object, a data acquisition system (DAS) operably connected to the detector, and a computer operably connected to the DAS. The computer is programmed to compute detector coefficients based on a static low kVp measurement and a static high kVp measurement, capture incident spectra at high and low kVp during fast kVp switching, compute effective X-ray incident spectra at high and low kVp during fast kVp switching using the captured incident spectra, scan a water phantom and normalize the computed detector coefficients to water, adjust the computed effective X-ray incident spectra based on the normalized detector coefficients, compute basis material decomposition functions using the adjusted X-ray incident spectra, and generate one or more basis material density images using the computed basis material decomposition functions.

摘要翻译： 成像系统包括：x射线源，其朝向物体发射X射线束;接收被物体衰减的高频电磁能的检测器;可操作地连接到检测器的数据采集系统（DAS）;以及计算机 可操作地连接到DAS。 计算机被编程为基于静态低kVp测量和静态高kVp测量来计算检测器系数，在快速kVp切换期间在高和低kVp处捕获入射光谱，在快速kVp期间计算高和低kVp处的有效X射线入射光谱 使用捕获的入射光谱切换，扫描水体模型并将计算的检测器系数归一化为水，基于归一化的检测器系数调整计算的有效X射线入射光谱，使用调整的X射线入射光谱计算基础材料分解函数， 并使用所计算的基础材料分解函数生成一个或多个基础材料密度图像。

公开(公告)号：US20110211667A1

公开(公告)日：2011-09-01

申请号：US12714168

申请日：2010-02-26

申请人： Abdelaziz Ikhlef ,  Jiang Hsieh ,  Jeffrey Alan Kautzer ,  Robert F. Senzig ,  Bruno Kristiaan Bernard De Man ,  Paavana Sainath ,  Xiaoye Wu ,  Jed Douglas Pack

发明人： Abdelaziz Ikhlef ,  Jiang Hsieh ,  Jeffrey Alan Kautzer ,  Robert F. Senzig ,  Bruno Kristiaan Bernard De Man ,  Paavana Sainath ,  Xiaoye Wu ,  Jed Douglas Pack

IPC分类号： H05G1/60 ,  B23P11/00

CPC分类号： A61B6/4208 ,  A61B6/032 ,  G01T1/2985 ,  Y10T29/49826

摘要： A system, method, and apparatus includes a computed tomography (CT) detector array having a central region with a plurality of central region detecting cells configured to acquire CT data of a first number of slices during a scan, a first wing along a first side of the central region, and a second wing along a second side of the central region opposite the first side. The first wing includes a plurality of first wing detecting cells configured to acquire CT data of a second number of slices during the scan. The second wing includes a plurality of second wing detecting cells configured to acquire CT data of a third number of slices during the scan. The second and third number of slices are less than the first number of slices. The first wing detecting cells are of a different type than the central region detecting cells.

摘要翻译： 系统，方法和装置包括具有中心区域的计算机断层摄影（CT）检测器阵列，多个中心区域检测单元被配置为在扫描期间获取第一数量的切片的CT数据，沿着第一侧 并且沿着与第一侧相对的中心区域的第二侧的第二翼。 第一机翼包括多个第一机翼检测单元，其被配置为在扫描期间获取第二数量的切片的CT数据。 第二翼包括多个第二翼检测单元，其被配置为在扫描期间获取第三数量的切片的CT数据。 第二和第三数量的切片小于第一数量的切片。 第一机翼检测单元与中央区域检测单元不同。

公开(公告)号：US20120163557A1

公开(公告)日：2012-06-28

申请号：US12977400

申请日：2010-12-23

申请人： Jiang Hsieh ,  Naveen Stephan Chandra ,  Xiaoye Wu ,  Suresh Narayanan ,  Dan Xu ,  Meghan Lynn Yue

发明人： Jiang Hsieh ,  Naveen Stephan Chandra ,  Xiaoye Wu ,  Suresh Narayanan ,  Dan Xu ,  Meghan Lynn Yue

IPC分类号： G01D18/00

CPC分类号： A61B6/032 ,  A61B6/037 ,  A61B6/4417 ,  A61B6/583

摘要： A method for calibrating a medical imaging system includes performing an initial calibration of the imaging system, at a manufacturing site fabricating the imaging system, using a plurality of phantoms, shipping one of the phantoms to an installation site installing the imaging system, and performing a final calibration, at an installation site of the imaging system, using the shipped phantom. A set of calibration phantoms is also described herein.

摘要翻译： 用于校准医学成像系统的方法包括在制造成像系统的制造现场使用多个幻影来执行成像系统的初始校准，将一个幻影运送到安装成像系统的安装地点，以及执行 在成像系统的安装地点使用运送的幻影进行最终校准。 本文还描述了一组校准模体。

公开(公告)号：US08155265B2

公开(公告)日：2012-04-10

申请号：US12837035

申请日：2010-07-15

申请人： Bruno Kristiaan Bernard De Man ,  Abdelaziz Ikhlef ,  Jiang Hsieh ,  Jeffrey Alan Kautzer ,  Robert F. Senzig ,  Paavana Sainath ,  Xiaoye Wu ,  Jed Douglas Pack

发明人： Bruno Kristiaan Bernard De Man ,  Abdelaziz Ikhlef ,  Jiang Hsieh ,  Jeffrey Alan Kautzer ,  Robert F. Senzig ,  Paavana Sainath ,  Xiaoye Wu ,  Jed Douglas Pack

IPC分类号： A61B6/03

CPC分类号： A61B6/032 ,  A61B6/4208 ,  G01T1/2985 ,  Y10T29/49002

摘要： A computed tomography (CT) detector array includes a central region substantially symmetric about a central axis thereof and includes a first plurality of x-ray detector cells configured to acquire CT data from a first number of detector rows during a scan, wherein the central axis is in a channel direction of the CT detector array and transverse to a slice direction of the CT detector array. A first wing is coupled to a first side of the central region, and a second wing is coupled to a second side of the central region opposite the first side. The first and second wings include respective second and third pluralities of x-ray detector cells and are each configured to acquire CT data from a number of detector rows that is less than the first number of detector rows. The CT detector array is asymmetric about the central axis of the central region.

摘要翻译： 计算机断层摄影（CT）检测器阵列包括围绕其中心轴基本对称的中心区域，并且包括第一多个x射线检测器单元，其被配置为在扫描期间从第一数量的检测器行获取CT数据，其中中心轴 在CT检测器阵列的通道方向上并且横向于CT检测器阵列的切片方向。 第一翼连接到中心区域的第一侧，第二翼连接到与第一侧相对的中心区域的第二侧。 第一和第二翼包括相应的第二和第三多个X射线检测器单元，并且各自被配置为从小于第一数量的检测器行的多个检测器行获取CT数据。 CT检测器阵列关于中心区域的中心轴线是不对称的。

公开(公告)号：US20120014502A1

公开(公告)日：2012-01-19

申请号：US12837035

申请日：2010-07-15

申请人： Bruno Kristiaan Bernard De Man ,  Abdelaziz Ikhlef ,  Jiang Hsieh ,  Jeffrey Alan Kautzer ,  Robert F. Senzig ,  Paavana Sainath ,  Xiaoye Wu ,  Jed Douglas Pack

发明人： Bruno Kristiaan Bernard De Man ,  Abdelaziz Ikhlef ,  Jiang Hsieh ,  Jeffrey Alan Kautzer ,  Robert F. Senzig ,  Paavana Sainath ,  Xiaoye Wu ,  Jed Douglas Pack

IPC分类号： A61B6/03 ,  H05K13/00

CPC分类号： A61B6/032 ,  A61B6/4208 ,  G01T1/2985 ,  Y10T29/49002

摘要： A computed tomography (CT) detector array includes a central region substantially symmetric about a central axis thereof and includes a first plurality of x-ray detector cells configured to acquire CT data from a first number of detector rows during a scan, wherein the central axis is in a channel direction of the CT detector array and transverse to a slice direction of the CT detector array. A first wing is coupled to a first side of the central region, and a second wing is coupled to a second side of the central region opposite the first side. The first and second wings include respective second and third pluralities of x-ray detector cells and are each configured to acquire CT data from a number of detector rows that is less than the first number of detector rows. The CT detector array is asymmetric about the central axis of the central region.

摘要翻译： 计算机断层摄影（CT）检测器阵列包括围绕其中心轴基本对称的中心区域，并且包括第一多个x射线检测器单元，其被配置为在扫描期间从第一数量的检测器行获取CT数据，其中中心轴 在CT检测器阵列的通道方向上并且横向于CT检测器阵列的切片方向。 第一翼连接到中心区域的第一侧，第二翼连接到与第一侧相对的中心区域的第二侧。 第一和第二翼包括相应的第二和第三多个X射线检测器单元，并且各自被配置为从小于第一数量的检测器行的多个检测器行获取CT数据。 CT检测器阵列关于中心区域的中心轴线是不对称的。

公开(公告)号：US08363917B2

公开(公告)日：2013-01-29

申请号：US12578886

申请日：2009-10-14

申请人： Jiahua Fan ,  Naveen Chandra ,  Andrew Johnson ,  Jiang Hsieh ,  Fang Dong ,  Mary Sue Kulpins ,  Peter Crandall

发明人： Jiahua Fan ,  Naveen Chandra ,  Andrew Johnson ,  Jiang Hsieh ,  Fang Dong ,  Mary Sue Kulpins ,  Peter Crandall

IPC分类号： G06K9/00 ,  A61B6/00 ,  H05G1/64

CPC分类号： G06T11/008 ,  G06T2211/408

摘要： A CT system includes a generator configured to energize an x-ray source to a first kilovoltage (kVp) and to a second kVp, and a computer that is programmed to acquire a first view dataset with the x-ray source energized to the first kVp and a second view dataset with the x-ray source energized to the second kVp, generate a base correction image using the first view dataset and the second view dataset, and reconstruct a pair of base material images from the first view dataset and from the second view dataset. The computer is also programmed to estimate artifact correlation in the pair of base material images using the base correction image, generate a pair of final base material images and a final monochromatic image, and correct one of the pair of final base material images and the final monochromatic image at a keV value using the estimated artifact correlation.

摘要翻译： CT系统包括发电机，其被配置为将x射线源激励到第一千伏（kVp）和第二kVp;以及计算机，其被编程为获取第一视图数据集，其中x射线源被激励到第一kVp 以及将x射线源激励到第二kVp的第二视图数据集，使用第一视图数据集和第二视图数据集生成基本校正图像，并且从第一视图数据集和第二视图数据集重构一对基本材料图像 查看数据集。 计算机还被编程为使用基本校正图像来估计一对基础材料图像中的伪像相关性，生成一对最终的基底图像和最终的单色图像，并且校正一对最终基底图像和最终的基底图像中的一个 使用估计的伪像相关性，以keV值的单色图像。