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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。
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公开(公告)号：US07212604B2
公开(公告)日：2007-05-01
申请号：US11171169
申请日：2005-06-29
IPC分类号： H01L25/00
CPC分类号： G01T1/2985 , G01T1/241 , G01T1/242 , G01T1/243 , G01T1/249
摘要： A computed tomography detector module is presented. The detector module includes a substrate having a topside and a bottom side. Additionally, the detector module includes a plurality of detector layers disposed on the top side of the substrate in a direction that is substantially orthogonal to the substrate, where each of the plurality of detector layers comprises a direct conversion material configured to absorb radiation, and where each of the plurality of detector layers comprises a first side and a second side. Further, the detector module includes a plurality of pixelated anode contacts is disposed on the first side of each of the plurality of detector layers. Also, the detector module includes a common cathode contact is disposed on the second side of each of the plurality of detector layers.
摘要翻译： 提出了一种计算机断层扫描检测器模块。 检测器模块包括具有顶侧和底侧的基板。 另外，检测器模块包括多个检测器层，该多个检测器层沿基本上垂直于衬底的方向设置在衬底的顶侧上，其中多个检测器层中的每一个包括被配置为吸收辐射的直接转换材料，并且其中 多个检测器层中的每一个包括第一侧和第二侧。 此外，检测器模块包括多个像素化的阳极触点设置在多个检测器层中的每一个的第一侧上。 此外，检测器模块包括公共阴极接触件设置在多个检测器层中的每一个的第二侧上。
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3.发明申请公开(公告)号：US20090161814A1
公开(公告)日：2009-06-25
申请号：US11959709
申请日：2007-12-19
申请人： Xiaoye Wu , James Walter Leblanc , Paavana Sainath
发明人： Xiaoye Wu , James Walter Leblanc , Paavana Sainath
摘要： A method for calibrating and reconstructing material density images in a dual-spectral computed tomography (CT) system 100 is disclosed. An X-ray source in the CT system 100 emits a first X-ray spectrum and a second X-ray spectrum towards an object. The method includes computing calibration coefficients by using projection data from the object for the two X-ray spectra and by linearizing at least two basis materials such as bone and water simultaneously. Further, basis materials decomposition coefficients for the at least two basis materials are computed by linearizing the basis materials individually. Correction values for the projection data and for the basis materials are then computed by using the basis materials decomposition coefficients and the calibration coefficients. The computed correction values are used in reconstructing material density images for the basis materials.
摘要翻译： 公开了一种用于在双光谱计算机断层摄影（CT）系统100中校准和重建材料密度图像的方法。 CT系统100中的X射线源朝向物体发射第一X射线光谱和第二X射线光谱。 该方法包括通过使用来自对象的两个X射线光谱的投影数据和同时线性化至少两种基础材料例如骨骼和水来计算校准系数。 此外，通过将基础材料单独线性化来计算至少两种基础材料的基础材料分解系数。 然后通过使用基础材料分解系数和校准系数来计算投影数据和基础材料的校正值。 计算的校正值用于重建基础材料的材料密度图像。
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公开(公告)号：US20100020921A1
公开(公告)日：2010-01-28
申请号：US12179298
申请日：2008-07-24
申请人： Fang Frank Dong , Xiaoye Wu , James Walter Leblanc
发明人： Fang Frank Dong , Xiaoye Wu , James Walter Leblanc
IPC分类号： A61B6/00
CPC分类号： A61B6/032 , A61B6/4028 , A61B6/583 , Y10S378/901
摘要： A computed tomographic imaging system is provided for generating computed tomography images. The computed tomographic system includes a processor configured to access image data encoding X-ray projections at a detector position and a plurality of X-ray source beam focal spot positions and to align pixel values for the projections in a direction of deviation of the positions. The processor is also configured to determine a correction factor for at least one of the projections based upon the aligned pixel values and upon a sum of the projections and to correct the pixel values for the at least one of the projections based upon the correction factor.
摘要翻译： 提供计算机断层摄影系统用于生成计算机断层摄影图像。 计算机断层摄影系统包括处理器，其被配置为访问在检测器位置处编码X射线投影的图像数据和多个X射线源束焦点位置，并且在位置的偏离方向上对准投影的像素值。 处理器还被配置为基于对准的像素值和投影的总和来确定至少一个投影的校正因子，并且基于校正因子来校正至少一个投影的像素值。
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5.发明授权公开(公告)号：US07801264B2
公开(公告)日：2010-09-21
申请号：US11959709
申请日：2007-12-19
申请人： Xiaoye Wu , James Walter Leblanc , Paavana Sainath
发明人： Xiaoye Wu , James Walter Leblanc , Paavana Sainath
IPC分类号： A61B6/00
摘要： A method for calibrating and reconstructing material density images in a dual-spectral computed tomography (CT) system 100 is disclosed. An X-ray source in the CT system 100 emits a first X-ray spectrum and a second X-ray spectrum towards an object. The method includes computing calibration coefficients by using projection data from the object for the two X-ray spectra and by linearizing at least two basis materials such as bone and water simultaneously. Further, basis materials decomposition coefficients for the at least two basis materials are computed by linearizing the basis materials individually. Correction values for the projection data and for the basis materials are then computed by using the basis materials decomposition coefficients and the calibration coefficients. The computed correction values are used in reconstructing material density images for the basis materials.
摘要翻译： 公开了一种用于在双光谱计算机断层摄影（CT）系统100中校准和重建材料密度图像的方法。 CT系统100中的X射线源朝向物体发射第一X射线光谱和第二X射线光谱。 该方法包括通过使用来自对象的两个X射线光谱的投影数据和同时线性化至少两种基础材料例如骨骼和水来计算校准系数。 此外，通过将基础材料单独线性化来计算至少两种基础材料的基础材料分解系数。 然后通过使用基础材料分解系数和校准系数来计算投影数据和基础材料的校正值。 计算的校正值用于重建基础材料的材料密度图像。
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公开(公告)号：US07929659B2
公开(公告)日：2011-04-19
申请号：US12179298
申请日：2008-07-24
申请人： Xiaoye Wu , Fang Frank Dong , James Walter Leblanc
发明人： Xiaoye Wu , Fang Frank Dong , James Walter Leblanc
IPC分类号： A61B6/03
CPC分类号： A61B6/032 , A61B6/4028 , A61B6/583 , Y10S378/901
摘要： A computed tomographic imaging system is provided for generating computed tomography images. The computed tomographic system includes a processor configured to access image data encoding X-ray projections at a detector position and a plurality of X-ray source beam focal spot positions and to align pixel values for the projections in a direction of deviation of the positions. The processor is also configured to determine a correction factor for at least one of the projections based upon the aligned pixel values and upon a sum of the projections and to correct the pixel values for the at least one of the projections based upon the correction factor.
摘要翻译： 提供计算机断层摄影系统用于生成计算机断层摄影图像。 计算机断层摄影系统包括处理器，其被配置为访问在检测器位置处编码X射线投影的图像数据和多个X射线源束焦点位置，并且在位置的偏离方向上对准投影的像素值。 处理器还被配置为基于对准的像素值和投影的总和来确定至少一个投影的校正因子，并且基于校正因子来校正至少一个投影的像素值。
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公开(公告)号：US07450683B2
公开(公告)日：2008-11-11
申请号：US11516852
申请日：2006-09-07
IPC分类号： A61B6/00
CPC分类号： G01T1/2985 , A61B6/032
摘要： A detector assembly is presented. The detector assembly includes a first detector layer having a top side and a bottom side, where the first detector layer includes a plurality of first coupling gaps. Additionally, the detector assembly includes a first interconnect structure operationally coupled to the first detector layer and configured to facilitate transfer of a first set of image data from the first detector layer to backplane electronics. The detector assembly also includes a second detector layer having a top side and a bottom side and disposed adjacent the bottom side of the first detector layer, where the second detector layer includes a plurality of second coupling gaps configured to facilitate passage of the first interconnect structure from the first detector layer to the backplane electronics. Also, the detector assembly includes a second interconnect structure operationally coupled to the second detector layer and configured to facilitate transfer of a second set of image data from the second detector layer to the backplane electronics.
摘要翻译： 提出了一种检测器组件。 检测器组件包括具有顶侧和底侧的第一检测器层，其中第一检测器层包括多个第一耦合间隙。 另外，检测器组件包括第一互连结构，其可操作地耦合到第一检测器层并且被配置为便于将第一组图像数据从第一检测器层传送到背板电子器件。 检测器组件还包括具有顶侧和底侧并且邻近第一检测器层的底侧设置的第二检测器层，其中第二检测器层包括多个第二耦合间隙，其被配置为便于第一互连结构的通过 从第一检测器层到背板电子设备。 此外，检测器组件包括第二互连结构，其可操作地耦合到第二检测器层并且被配置为便于将第二组图像数据从第二检测器层传送到背板电子器件。
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公开(公告)号：US20080061395A1
公开(公告)日：2008-03-13
申请号：US11516852
申请日：2006-09-07
IPC分类号： H01L31/00
CPC分类号： G01T1/2985 , A61B6/032
摘要： A detector assembly is presented. The detector assembly includes a first detector layer having a top side and a bottom side, where the first detector layer includes a plurality of first coupling gaps. Additionally, the detector assembly includes a first interconnect structure operationally coupled to the first detector layer and configured to facilitate transfer of a first set of image data from the first detector layer to backplane electronics. The detector assembly also includes a second detector layer having a top side and a bottom side and disposed adjacent the bottom side of the first detector layer, where the second detector layer includes a plurality of second coupling gaps configured to facilitate passage of the first interconnect structure from the first detector layer to the backplane electronics. Also, the detector assembly includes a second interconnect structure operationally coupled to the second detector layer and configured to facilitate transfer of a second set of image data from the second detector layer to the backplane electronics.
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9.发明授权公开(公告)号：US07084403B2
公开(公告)日：2006-08-01
申请号：US10689361
申请日：2003-10-17
申请人： Alok Mani Srivastava , Steven Jude Duclos , Qun Deng , James Walter Leblanc , Tie Bond Gao , Jian Min Wang , Lucas Lemar Clarke
发明人： Alok Mani Srivastava , Steven Jude Duclos , Qun Deng , James Walter Leblanc , Tie Bond Gao , Jian Min Wang , Lucas Lemar Clarke
IPC分类号： G01T1/20
CPC分类号： G01T1/2023 , C09K11/7772
摘要： Scintillator materials based on certain types of halide-lanthanide matrix materials are described. In one embodiment, the matrix material contains a mixture of lanthanide halides, i.e., a solid solution of at least two of the halides, such as lanthanum chloride and lanthanum bromide. In another embodiment, the matrix material is based on lanthanum iodide alone, which must be substantially free of lanthanum oxyiodide. The scintillator materials, which can be in monocrystalline or polycrystalline form, also include an activator for the matrix material, e.g., cerium. Radiation detectors that use the scintillators are also described, as are related methods for detecting high-energy radiation.
摘要翻译： 描述了基于某些类型的卤化物 - 镧系元素基质材料的闪烁体材料。 在一个实施方案中，基质材料含有镧系元素卤化物的混合物，即至少两种卤化物的固溶体，例如氯化镧和溴化镧。 在另一个实施方案中，基质材料仅基于碘化镧，其必须基本上不含氧化镧镧。 可以是单晶或多晶形式的闪烁体材料还包括用于基质材料例如铈的活化剂。 还描述了使用闪烁体的辐射检测器，以及用于检测高能量辐射的相关方法。
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