公开(公告)号：US08385499B2

公开(公告)日：2013-02-26

申请号：US12647603

申请日：2009-12-28

申请人： Zhaoping Wu ,  Haochuan Jiang ,  Joseph James Lacey ,  James S. Vartuli ,  Yunfeng Sun ,  Qun Deng ,  Xiaoye Wu ,  Kun Tao ,  Zhaohui Yang

发明人： Zhaoping Wu ,  Haochuan Jiang ,  Joseph James Lacey ,  James S. Vartuli ,  Yunfeng Sun ,  Qun Deng ,  Xiaoye Wu ,  Kun Tao ,  Zhaohui Yang

IPC分类号： H05G1/00 ,  G21K1/02 ,  G21K1/00

CPC分类号： G21K1/025 ,  A61B6/032 ,  A61B6/4291 ,  B29D11/00596

摘要： A two dimensional collimator assembly and method of manufacturing thereof is disclosed. The collimator assembly includes a wall structure constructed to form a two dimensional array of channels to collimate x-rays. The wall structure further includes a first portion positioned proximate the object to be scanned and configured to absorb scattered x-rays and a second portion formed integrally with the first portion and extending out from the first portion away from the object to be scanned. The first portion of the wall structure has a height greater than a height of the second portion of the wall structure. The second portion of the wall structure includes a reflective material coated thereon in each of the channels forming the two dimensional array of channels.

摘要翻译： 公开了二维准直器组件及其制造方法。 准直器组件包括构造成形成二维阵列阵列以准直X射线的壁结构。 壁结构还包括靠近待扫描物体定位的第一部分，并且被配置成吸收散射的x射线，以及第二部分与第一部分整体形成并从第一部分延伸离开被扫描物体。 壁结构的第一部分的高度大于壁结构的第二部分的高度。 壁结构的第二部分包括在每个通道中涂覆的反射材料，形成二维通道阵列。

公开(公告)号：US20120134561A1

公开(公告)日：2012-05-31

申请号：US12955227

申请日：2010-11-29

申请人： Dan Xu ,  David Allen Langan ,  Xiaoye Wu ,  Jed Douglas Pack ,  Andrea Marie Schmitz

发明人： Dan Xu ,  David Allen Langan ,  Xiaoye Wu ,  Jed Douglas Pack ,  Andrea Marie Schmitz

IPC分类号： G06K9/00

CPC分类号： G06T11/008 ,  G06T5/002 ,  G06T5/50 ,  G06T2207/10081 ,  G06T2211/408

摘要： Methods and systems for correlated noise suppression are presented. The present correlated noise suppression technique estimates a correlation direction between noise values in a first and a second MD image corresponding to a first and a second basis material, respectively. The two MD images are diffused using the estimated correlation direction to generate a first and a second diffused image. Further, first and second noise masks are generated by subtracting the diffused image from the corresponding MD image. Edges in the first and the second MD images are processed with the first and second noise masks, respectively to generate a final first noise mask and a final second noise mask. The first MD image is then processed with the final second noise mask to generate a final first MD image and the second MD image is processed with the final first noise mask to generate a final second MD image.

摘要翻译： 提出了相关噪声抑制的方法和系统。 本相关噪声抑制技术分别估计与第一和第二基础材料对应的第一和第二MD图像中的噪声值之间的相关方向。 使用估计的相关方向来扩散两个MD图像以生成第一和第二扩散图像。 此外，通过从相应的MD图像中减去漫射图像来产生第一和第二噪声掩码。 第一和第二MD图像中的边缘分别用第一和第二噪声掩模进行处理，以产生最终的第一噪声掩模和最终的第二噪声掩模。 然后用最终的第二噪声掩码处理第一MD图像以产生最终的第一MD图像，并且用最终的第一噪声掩码处理第二MD图像以产生最终的第二MD图像。

公开(公告)号：US20110249879A1

公开(公告)日：2011-10-13

申请号：US12976785

申请日：2010-12-22

申请人： Xiaoye Wu ,  Robert Franklin Senzig ,  Jing Zhao

发明人： Xiaoye Wu ,  Robert Franklin Senzig ,  Jing Zhao

IPC分类号： G06K9/00

CPC分类号： A61B6/032 ,  A61B6/5205 ,  A61B6/5229 ,  A61B6/583 ,  G06T11/005

摘要： The present disclosure relates to the performing spectral calibration of a CT imaging system. In accordance with certain embodiments, spectral calibration phantoms are scanned while positioned on a table in the imaging volume of the CT imaging system. The scans of the calibration phantoms, in conjunction with air sans performed on the CT imaging system, are used to derive information about the deviation of the measured phantom scans from an ideal. The deviation information is in turn used to derive spectral calibration vectors that may be used with the CT imaging system.

摘要翻译： 本公开涉及执行CT成像系统的光谱校准。 根据某些实施例，在定位在CT成像系统的成像体积的台上的同时扫描光谱校准模体。 校准模型的扫描结合在CT成像系统上执行的空气，用于得到关于测量的幻影扫描与理想的偏差的信息。 偏差信息又用于导出可与CT成像系统一起使用的光谱校准矢量。

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：US07885372B2

公开(公告)日：2011-02-08

申请号：US11952494

申请日：2007-12-07

申请人： Peter Michael Edic ,  Jonathan David Short ,  John Eric Tkaczyk ,  Xiaoye Wu

发明人： Peter Michael Edic ,  Jonathan David Short ,  John Eric Tkaczyk ,  Xiaoye Wu

IPC分类号： A61B6/03 ,  H05G1/60 ,  H05G1/64 ,  G21K3/00

CPC分类号： G01N23/046 ,  A61B6/032 ,  A61B6/4035 ,  A61B6/4042 ,  A61B6/4241 ,  A61B6/482 ,  G01N2223/419

摘要： An energy-sensitive computed tomography system is provided. The energy-sensitive computed tomography system includes an X-ray source configured to emit an X-ray beam resulting from electrons impinging upon a target material. The energy-sensitive computed tomography system also includes an object positioned within the X-ray beam. The energy-sensitive computed tomography system further includes a detector configured to receive a transmitted beam of the X-rays through the object. The energy-sensitive computed tomography system also includes a filter having an alternating pattern disposed between the X-ray source and the detector, the filter configured to facilitate measuring projection data that can be used to generate low-energy and high-energy spectral information.

摘要翻译： 提供了一种能量敏感的计算机断层摄影系统。 能量敏感的计算机断层摄影系统包括被配置为发射由撞击在目标材料上的电子产生的X射线束的X射线源。 能量敏感的计算机断层摄影系统还包括位于X射线束内的物体。 能量敏感的计算机断层摄影系统还包括检测器，其被配置为接收通过物体的X射线的透射束。 能量敏感的计算机断层摄影系统还包括具有设置在X射线源和检测器之间的交替图案的滤光器，滤光器被配置为便于测量可用于产生低能量和高能量光谱信息的投影数据。

公开(公告)号：US20100104062A1

公开(公告)日：2010-04-29

申请号：US12257658

申请日：2008-10-24

申请人： Xiaoye Wu ,  David Langan ,  Colin R. Wilson ,  Yun Zou

发明人： Xiaoye Wu ,  David Langan ,  Colin R. Wilson ,  Yun Zou

IPC分类号： H05G1/56 ,  A61B6/00 ,  H01J35/06

CPC分类号： H01J35/06 ,  H01J35/045 ,  H01J2235/068

摘要： A CT system includes a rotatable gantry having an opening for receiving an object to be scanned and an x-ray source coupled to the gantry and configured to project x-rays through the opening. The x-ray source includes a target, a first cathode configured to emit a first beam of electrons toward the target, a first gridding electrode coupled to the first cathode, a second cathode configured to emit a second beam of electrons toward the target, and a second gridding electrode coupled to the second cathode. The system includes a generator configured to energize the first cathode to a first kVp and to energize the second cathode to a second kVp, and a detector attached to the gantry and positioned to receive x-rays that pass through the opening. The system also includes a controller configured to apply a gridding voltage to the first gridding electrode to block emission of the first beam of electrons toward the target, apply the gridding voltage to the second gridding electrode to block emission of the second beam of electrons toward the target, and acquire dual energy imaging data from the detector.

摘要翻译： CT系统包括可旋转机架，其具有用于接收待扫描物体的开口和耦合到台架的x射线源，并且被配置成通过开口投影X射线。 x射线源包括目标，被配置为朝向目标发射第一电子束的第一阴极，耦合到第一阴极的第一网格电极，被配置为向靶发射第二电子束的第二阴极，以及 耦合到第二阴极的第二栅极电极。 该系统包括发电机，其被配置为将第一阴极激励到第一kVp并且将第二阴极激励到第二kVp，以及附接到台架并被定位成接收穿过开口的x射线的检测器。 该系统还包括：控制器，被配置为向第一格栅电极施加网格化电压，以阻止第一电子束朝向目标的发射，将网格化电压施加到第二格栅电极，以阻止第二电子束朝向 目标，并从检测器获取双能量成像数据。

公开(公告)号：US20090304249A1

公开(公告)日：2009-12-10

申请号：US12134890

申请日：2008-06-06

申请人： Xiaoye Wu

发明人： Xiaoye Wu

IPC分类号： G06K9/00

CPC分类号： A61B6/405 ,  A61B6/032 ,  A61B6/4035 ,  A61B6/4241 ,  A61B6/482 ,  G01N23/083

摘要： A technique is provided for computing an atomic number of materials forming an object imaged by a radiological modality. The method includes accessing a first monochromatic image and a second monochromatic image of the object, the first monochromatic image acquired at a first energy level and the second monochromatic image acquired at a second energy level. A ratio of the mass attenuation coefficients between the first monochromatic image and the second monochromatic image may be obtained. The atomic number for a material of the object may be computed based upon the ratio of mass attenuation coefficients.

摘要翻译： 提供了一种用于计算形成通过放射学模态成像的物体的材料的原子数的技术。 该方法包括访问对象的第一单色图像和第二单色图像，以第一能级获取的第一单色图像和以第二能级获取的第二单色图像。 可以获得第一单色图像和第二单色图像之间的质量衰减系数的比率。 可以基于质量衰减系数的比率来计算物体的材料的原子序数。

公开(公告)号：US20090052621A1

公开(公告)日：2009-02-26

申请号：US11843700

申请日：2007-08-23

申请人： Deborah Joy Walter ,  Xiaoye Wu ,  John Eric Tkaczyk ,  Yanfeng Du

发明人： Deborah Joy Walter ,  Xiaoye Wu ,  John Eric Tkaczyk ,  Yanfeng Du

IPC分类号： G01N23/06

CPC分类号： G01N23/087 ,  A61B5/4869 ,  A61B6/032 ,  A61B6/4035 ,  A61B6/4042 ,  A61B6/405 ,  A61B6/4241 ,  A61B6/482 ,  G01N2223/423 ,  G01N2223/424

摘要： A diagnostic imaging system includes a high frequency electromagnetic energy source that emits a beam of high frequency electromagnetic energy toward an object to be imaged, a detector that receives high frequency electromagnetic energy emitted by the high frequency electromagnetic energy source, and a data acquisition system (DAS) operably connected to the detector. A computer is operably connected to the DAS and is programmed to generate corresponding sets of projection values for three or more energy spectra through employment of attenuation coefficients of three or more basis materials to simulate responses of the diagnostic imaging system to a plurality of lengths of the three or more basis materials wherein the three or more basis materials comprise two or more non K-edge basis materials and one or more K-edge basis materials.

摘要翻译： 一种诊断成像系统包括：高频电磁能源，其向待成像对象发射高频电磁能束;接收由高频电磁能源发出的高频电磁能的检测器;以及数据采集系统（ DAS）可操作地连接到检测器。 计算机可操作地连接到DAS，并被编程为通过使用三个或更多个基础材料的衰减系数来产生三个或更多个能量谱的相应的投影值组，以模拟诊断成像系统对多个长度的 三种或更多种基础材料，其中三种或更多种基材包含两种或多种非K边缘基础材料和一种或多种K边缘基础材料。

公开(公告)号：US07492855B2

公开(公告)日：2009-02-17

申请号：US10743195

申请日：2003-12-22

申请人： Forrest Frank Hopkins ,  Peter Michael Edic ,  Samit Kumar Basu ,  Bruno De Man ,  James Walter Leblanc ,  Xiaoye Wu ,  Deborah Joy Walter ,  William Robert Ross ,  Colin Richard Wilson ,  Ricardo Scott Avila ,  Robert August Kaucic, Jr.

发明人： Forrest Frank Hopkins ,  Peter Michael Edic ,  Samit Kumar Basu ,  Bruno De Man ,  James Walter Leblanc ,  Xiaoye Wu ,  Deborah Joy Walter ,  William Robert Ross ,  Colin Richard Wilson ,  Ricardo Scott Avila ,  Robert August Kaucic, Jr.

IPC分类号： 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。

公开(公告)号：US07466793B2

公开(公告)日：2008-12-16

申请号：US11553411

申请日：2006-10-26

申请人： Xiaoye Wu ,  James W. LeBlanc ,  Samit Kumar Basu

发明人： Xiaoye Wu ,  James W. LeBlanc ,  Samit Kumar Basu

IPC分类号： G01N23/00

CPC分类号： A61B6/405 ,  A61B6/032 ,  A61B6/4241 ,  A61B6/482 ,  A61B6/5235 ,  G01T1/2985

摘要： A CT system in an example comprises one or more high frequency electromagnetic energy sources, a detection assembly, a data acquisition system (DAS), and a computer. The one or more high frequency electromagnetic energy sources emit one or more beams of high frequency electromagnetic energy toward an object to be imaged. The detection assembly is capable of measuring a plurality of projection data at a same projection path that corresponds to a plurality of distinct incident energy spectra. The detection assembly comprises one or more energy discriminating (ED) detectors and/or one or more energy integration (EI) detectors that receive high frequency electromagnetic energy emitted by the one or more high frequency electromagnetic energy sources. The data acquisition system (DAS) is operably connected to the one or more ED detectors and/or the one or more EI detectors. The computer is operably connected to the DAS.

摘要翻译： 示例中的CT系统包括一个或多个高频电磁能源，检测组件，数据采集系统（DAS）和计算机。 一个或多个高频电磁能源朝向要成像的物体发射一个或多个高频电磁能量束。 检测组件能够在对应于多个不同入射能谱的相同投影路径上测量多个投影数据。 检测组件包括一个或多个能量识别（ED）检测器和/或接收由一个或多个高频电磁能源发射的高频电磁能的一个或多个能量积分（EI）检测器。 数据采集​​系统（DAS）可操作地连接到一个或多个ED检测器和/或一个或多个EI检测器。 计算机可操作地连接到DAS。