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11. 发明申请

US20080075226A1 Cargo security inspection system and method 有权
标题翻译：货物安全检查制度和方法
公开(公告)号：US20080075226A1
公开(公告)日：2008-03-27
申请号：US11801272
申请日：2007-05-08
申请人： Zhiqiang Chen , Li Zhang , Kejun Kang , Haifeng Hu , Yuanjing Li , Yinong Liu , Hewei Gao , Ziran Zhao , Yuxiang Xing , Yongshun Xiao , Jianmin Li
发明人： Zhiqiang Chen , Li Zhang , Kejun Kang , Haifeng Hu , Yuanjing Li , Yinong Liu , Hewei Gao , Ziran Zhao , Yuxiang Xing , Yongshun Xiao , Jianmin Li
IPC分类号： G01N23/00
CPC分类号： G01N23/04 , G06T7/0004
摘要： A cargo security inspection system inspecting an object moving through the system, including: a mechanical conveyance unit carrying, conveying, and defining a travel path of the object in the system; a radiation-generating unit generating ray beams for transmitting through the object; and a data collecting unit collecting transmission data about the rays having already transmitted through the object and processing the transmission data; wherein the travel path includes at least two linear sub-paths at an angle relative to each other; the data collecting unit includes at least two detector arrays receiving ray beams, each detector array corresponding to one linear sub-path, a receiving plane of each of the detector arrays disposed parallel to its corresponding linear sub-path; and in use, the radiation-generating and data collecting units remain stationary, and the object travels along its travel path and only translates on the at least two linear sub-paths without any rotation.
摘要翻译：检查通过系统移动的物体的货物安全检查系统，包括：机械传送单元，承载，传送和限定系统中物体的行进路径; 辐射产生单元，其产生用于透过物体的射线束; 以及数据收集单元，收集关于已经通过对象发送的射线的发送数据，并处理发送数据; 其中所述行进路径包括相对于彼此成一定角度的至少两个线性子路径; 数据采集单元包括至少两个接收射线束的检测器阵列，每个检测器阵列对应于一个线性子路径，每个检测器阵列的接收平面平行于其对应的线性子路径设置; 并且在使用中，辐射产生和数据收集单元保持静止，并且物体沿其行进路径行进，并且仅在至少两个线性子路径上平移而没有任何旋转。

12. 发明申请

US20070280417A1 Cargo security inspection method and system based on spiral scanning 有权
标题翻译：基于螺旋扫描的货物安全检查方法和系统
公开(公告)号：US20070280417A1
公开(公告)日：2007-12-06
申请号：US11801279
申请日：2007-05-08
申请人： Kejun Kang , Li Zhang , Zhiqiang Chen , Haifeng Hu , Yuanjing Li , Yinong Liu , Guowei Zhang , Ziran Zhao , Yuxiang Xing , Yongshun Xiao
发明人： Kejun Kang , Li Zhang , Zhiqiang Chen , Haifeng Hu , Yuanjing Li , Yinong Liu , Guowei Zhang , Ziran Zhao , Yuxiang Xing , Yongshun Xiao
IPC分类号： G01N23/04
CPC分类号： G01N23/046 , A61B6/027 , G01N2223/419 , G06T7/0008 , G06T7/97 , G06T2207/10081 , G06T2207/20016 , G06T2207/30112 , Y10S378/901
摘要： A cargo security inspection method and system based on spiral scanning, the method including: spirally scanning an inspected object at a first precision to obtain the transmission projection data; judging whether there is a suspect area in the inspected area; scanning at least one slice of the suspect area at a second precision wherein the second precision is greater than the first precision; reconstructing a tomographic image of the at least one slice; and using the reconstructed tomographic image to judge whether there is any dangerous article in the suspect area.
摘要翻译：一种基于螺旋扫描的货物安全检查方法和系统，所述方法包括：以第一精度螺旋扫描检查对象以获得传输投影数据; 判断被检区域是否有可疑区域; 以第二精度扫描所述可疑区域的至少一个切片，其中所述第二精度大于所述第一精度; 重建所述至少一个切片的断层图像; 并使用重建的断层图像来判断可疑区域中是否存在任何危险物品。

13. 发明授权

US07570737B2 Cargo security inspection method and system based on spiral scanning 有权
标题翻译：基于螺旋扫描的货物安全检查方法和系统
公开(公告)号：US07570737B2
公开(公告)日：2009-08-04
申请号：US11801279
申请日：2007-05-08
申请人： Kejun Kang , Li Zhang , Zhiqiang Chen , Haifeng Hu , Yuanjing Li , Yinong Liu , Guowei Zhang , Ziran Zhao , Yuxiang Xing , Yongshun Xiao
发明人： Kejun Kang , Li Zhang , Zhiqiang Chen , Haifeng Hu , Yuanjing Li , Yinong Liu , Guowei Zhang , Ziran Zhao , Yuxiang Xing , Yongshun Xiao
IPC分类号： G01N23/04
CPC分类号： G01N23/046 , A61B6/027 , G01N2223/419 , G06T7/0008 , G06T7/97 , G06T2207/10081 , G06T2207/20016 , G06T2207/30112 , Y10S378/901
摘要： A cargo security inspection method and system based on spiral scanning, the method including: spirally scanning an inspected object at a first precision to obtain the transmission projection data; judging whether there is a suspect area in the inspected area; scanning at least one slice of the suspect area at a second precision wherein the second precision is greater than the first precision; reconstructing a tomographic image of the at least one slice; and using the reconstructed tomographic image to judge whether there is any dangerous article in the suspect area.
摘要翻译：一种基于螺旋扫描的货物安全检查方法和系统，所述方法包括：以第一精度螺旋扫描检查对象以获得传输投影数据; 判断被检区域是否有可疑区域; 以第二精度扫描所述可疑区域的至少一个切片，其中所述第二精度大于所述第一精度; 重建所述至少一个切片的断层图像; 并使用重建的断层图像来判断可疑区域中是否存在任何危险物品。

14. 发明申请

US20090003516A1 X-Ct Scan System 有权
标题翻译： X-Ct扫描系统
公开(公告)号：US20090003516A1
公开(公告)日：2009-01-01
申请号：US12159640
申请日：2006-12-14
申请人： Zhiqiang Chen , Kejun Kang , Li Zhang , Haifeng Hu , Yuxiang Xing , Liang Li , Yongshun Xiao , Ziran Zhao , Yuanjing Li , Yinong Liu
发明人： Zhiqiang Chen , Kejun Kang , Li Zhang , Haifeng Hu , Yuxiang Xing , Liang Li , Yongshun Xiao , Ziran Zhao , Yuanjing Li , Yinong Liu
IPC分类号： A61B6/00
CPC分类号： A61B6/032 , A61B6/587
摘要： An X-CT scan system includes a base, an object rotary support, an X-ray generation device and a data acquisition system, wherein one side of the detector is leveled to or beyond the prolong line of the connecting line between the X-ray source of the X-ray generation device and the center of the object rotary support, the length of the beyond portion is less than the radius of the imaging field. The advantage of the invention is in that the invention can reconstruct the entire image of the object by means of X-ray projection data which only covers half of the area of the object. Compared with the traditional CT scan system, half of the detector size can be saved at most. The X-CT scan system is simplified and the projection data amount for scan and computation amount for image reconstruction are also reduced with the reconstructed image quality guaranteed.
摘要翻译： X-CT扫描系统包括基座，对象旋转支架，X射线产生装置和数据采集系统，其中检测器的一侧被平整到或超过X射线之间的连接线的延长线 X射线产生装置的源和对象旋转支架的中心，超出部分的长度小于成像场的半径。本发明的优点在于，本发明可以通过仅覆盖对象区域的一半的X射线投影数据来重建物体的整个图像。与传统CT扫描系统相比，检测器尺寸的一半最多可以节省。 X-CT扫描系统被简化，并且用于图像重建的扫描和计算量的投影数据量也被减少，重建图像质量得到保证。

15. 发明申请

US20080084962A1 Multiple-view-angle cargo security inspection method and system 有权
标题翻译：多视角货物安全检查方法和系统
公开(公告)号：US20080084962A1
公开(公告)日：2008-04-10
申请号：US11801250
申请日：2007-05-08
申请人： Li Zhang , Zhiqiang Chen , Kejun Kang , Haifeng Hu , Yuxiang Xing , Xinhui Duan , Yongshun Xiao , Ziran Zhao , Yuanjing Li , Yinong Liu
发明人： Li Zhang , Zhiqiang Chen , Kejun Kang , Haifeng Hu , Yuxiang Xing , Xinhui Duan , Yongshun Xiao , Ziran Zhao , Yuanjing Li , Yinong Liu
IPC分类号： G01N23/04
CPC分类号： G01N23/046 , G01N2223/419 , G01T1/2985 , G01V5/005 , G06T7/0004
摘要： A multiple-view-angle cargo security inspection method for inspecting an object using a cargo security inspection system, the cargo security inspection system including a radiation source for generating a beam of rays for transmitting through the object to be inspected and a data collecting unit for collecting the transmission projection data after the beam of rays has transmitted through the inspected object, the method including a scanning step including: rotating the radiation source and/or the object about a rotation axis so as to achieve a relative rotation, thereby positioning the radiation source in a plurality of discrete positions with different view angles with respect to the inspected object, wherein, in each view angle, the radiation source moves along a straight line in a direction parallel to the rotation axis and at the same time scans the inspected object so as to acquire the transmission projection data at each view angle.
摘要翻译：一种用于使用货物安全检查系统检查物体的多视角货物安全检查方法，所述货物安全检查系统包括用于产生用于通过待检查对象传送的光束的辐射源，以及用于在射线束透过被检查物体之后收集透射投影数据，该方法包括扫描步骤，包括：使辐射源和/或物体围绕旋转轴旋转，以实现相对旋转，从而定位辐射源于相对于被检查物体具有不同视角的多个离散位置，其中，在每个视角中，辐射源沿着平行于旋转轴线的方向沿着直线移动，并且同时扫描被检查物体以便以每个视角获取传输投影数据。

16. 发明授权

US09380984B2 Computer tomography imaging device and method 有权
标题翻译：计算机断层扫描成像装置及方法
公开(公告)号：US09380984B2
公开(公告)日：2016-07-05
申请号：US13322696
申请日：2009-12-30
申请人： Liang Li , Zhiqiang Chen , Li Zhang , Kejun Kang , Yuanjing Li , Yinong Liu , Yuxiang Xing , Ziran Zhao
发明人： Liang Li , Zhiqiang Chen , Li Zhang , Kejun Kang , Yuanjing Li , Yinong Liu , Yuxiang Xing , Ziran Zhao
IPC分类号： G06T11/00 , A61B6/03 , A61B6/06 , A61B6/00
CPC分类号： A61B6/032 , A61B6/06 , A61B6/4452 , A61B6/469 , G06T11/006 , G06T2211/416 , G06T2211/421 , G06T2211/424
摘要： The present invention discloses a method for performing CT imaging on a region of interest of an object under examination, comprising: acquiring the CT projection data of the region of interest; acquiring the CT projection data of region B; selecting a group of PI line segments covering the region of interest, and calculating the reconstruction image value for each PI line segment in the group; and combining the reconstruction image values in all the PI line segments to obtain the image of the region of interest. The present invention further discloses a CT imaging device using this method and a data processor therein. Since the 2D/3D slice image of the region of interest can be exactly reconstructed and obtained as long as the X-ray beam covers the region of interest and the region B, it is possible to use a small-sized detector to perform CT imaging on the region of interest at any position of a large-sized object, which reduces to a great extent the radiation dose of the X-ray during the CT scanning.
摘要翻译：本发明公开了一种对被检查物体的感兴趣区域进行CT成像的方法，包括：获取感兴趣区域的CT投影数据; 获取区域B的CT投影数据; 选择覆盖感兴趣区域的一组PI线段，并计算组中每个PI线段的重建图像值; 并且将所有PI线段中的重建图像值组合以获得感兴趣区域的图像。本发明还公开了一种使用该方法的CT成像装置及其中的数据处理器。由于只要X射线束覆盖感兴趣区域和区域B，就可以精确地重构和获得感兴趣区域的2D / 3D切片图像，因此可以使用小尺寸检测器来执行CT成像在大尺寸物体的任何位置处的感兴趣区域，其在CT扫描期间在很大程度上降低X射线的辐射剂量。

17. 发明授权

US07672427B2 Imaging system 有权
标题翻译：成像系统
公开(公告)号：US07672427B2
公开(公告)日：2010-03-02
申请号：US11545255
申请日：2006-10-10
申请人： Zhiqiang Chen , Li Zhang , Hewei Gao , Kejun Kang , Jianping Cheng , Yuanjing Li , Yinong Liu , Yuxiang Xing , Ziran Zhao , Yongshun Xiao
发明人： Zhiqiang Chen , Li Zhang , Hewei Gao , Kejun Kang , Jianping Cheng , Yuanjing Li , Yinong Liu , Yuxiang Xing , Ziran Zhao , Yongshun Xiao
IPC分类号： G01N23/04
CPC分类号： G01N23/04 , A61B6/027
摘要： It is disclosed an imaging system comprising: radiation generating means including at least one radiation source for generating radiations; data acquiring means including an detector matrix faced the radiation source for obtaining projection data by receiving radiations penetrated through an object to be inspected; transporting means for making the object to be inspected between the radiation source and the detector matrix linearly moving relative to the radiation source and the detector matrix; and controlling and image processing means for controlling the radiation generating means, the data acquiring means and the transporting means, and for reconstructing an image of the object to be inspected from the projection data. The imaging system according to the present invention achieves a real stereoscopic radiography by using straight-line trajectory scan and reconstructing a tomographic or stereoscopic image through a straight-line filtered back-projection algorithm. The present imaging system has advantages of fast examination speed, no rotation, and out of large cone-angle problem in a circular-orbit cone-beam CT.
摘要翻译：公开了一种成像系统，包括：辐射发生装置，其包括用于产生辐射的至少一个辐射源; 数据获取装置，包括面向辐射源的检测器矩阵，用于通过接收穿过待检查对象的辐射来获得投影数据; 用于使所述物体在所述辐射源和所述检测器矩阵之间相对于所述辐射源和所述检测器矩阵线性移动的传送装置; 以及控制和图像处理装置，用于控制辐射发生装置，数据获取装置和传送装置，并用于从投影数据重建待检查对象的图像。根据本发明的成像系统通过使用直线轨迹扫描并通过直线过滤的反投影算法重建断层摄影或立体图像来实现真正的立体放射照相。本发明的成像系统在圆锥轨道锥形CT中具有检测速度快，无旋转和大锥角问题的优点。

18. 发明申请

US20070116175A1 System and method for reconstructing image by using straight-line trajectory scan 有权
标题翻译：使用直线轨迹扫描重建图像的系统和方法
公开(公告)号：US20070116175A1
公开(公告)日：2007-05-24
申请号：US11546717
申请日：2006-10-12
申请人： Li Zhang , Hewei Gao , Zhiqiang Chen , Kejun Kang , Jianping Cheng , Yuanjing Li , Yinong Liu , Yuxiang Xing , Ziran Zhao , Yongshun Xiao
发明人： Li Zhang , Hewei Gao , Zhiqiang Chen , Kejun Kang , Jianping Cheng , Yuanjing Li , Yinong Liu , Yuxiang Xing , Ziran Zhao , Yongshun Xiao
IPC分类号： H05G1/60 , A61B6/00 , G01N23/00 , G21K1/12
CPC分类号： G01N23/046 , A61B6/032 , G01N2223/3303 , G01N2223/419 , G06T11/006 , G06T2211/421
摘要： It is disclosed a system and a method for reconstructing an image by using a straight-line trajectory scan to avoid image spatial resolution reduction due to interpolations in angular direction and detector direction during data rebinning. This system comprises: a projection data conversion section for converting projection data from straight-line trajectory scan into projection data under quasi-parallel-beam scan; a filtration section for obtaining filtered projection data by convoluting the projection data under quasi-parallel-beam scan with a predetermined convolutional kernel; and a back-projection section for reconstructing an image by back-projecting the filtered projection data with a weighting factor. By using the inventive system and method, the spatial resolution in the reconstructed image is improved, and the influence of data truncation on the reconstructed image is reduced. The present invention applies the filtration and back-projection mode, and thus has general advantages of the filtration and back projection, such as simplicity and efficiency. And it is easy to be parallelized and accelerated.
摘要翻译：公开了一种通过使用直线轨迹扫描来重建图像的系统和方法，以避免在数据重组期间由于在角度方向和检测器方向上的内插而导致的图像空间分辨率降低。该系统包括：投影数据转换部分，用于将投影数据从直线轨迹扫描转换成准并行束扫描的投影数据; 过滤部分，用于通过用预定的卷积核在准平行束扫描下卷积投影数据来获得经滤波的投影数据; 以及背投影部分，用于通过用加权因子反投影过滤的投影数据来重建图像。通过使用本发明的系统和方法，改善了重建图像中的空间分辨率，减少了数据截断对重建图像的影响。本发明应用过滤和反投影模式，因此具有过滤和反投影的一般优点，例如简单性和效率。并行并行加速很容易。

19. 发明申请

US20090323894A1 DEVICE AND METHOD FOR REAL-TIME MARK OF SUBSTANCE IDENTIFICATION SYSTEM 有权
标题翻译：物质识别系统实时标志的设备和方法
公开(公告)号：US20090323894A1
公开(公告)日：2009-12-31
申请号：US12492739
申请日：2009-06-26
申请人： Haifeng Hu , Kejun Kang , Li Zhang , Xuewu Wang , Qingping Huang , Yuanjing Li , Yinong Liu , Ziran Zhao , Zhen Wu
发明人： Haifeng Hu , Kejun Kang , Li Zhang , Xuewu Wang , Qingping Huang , Yuanjing Li , Yinong Liu , Ziran Zhao , Zhen Wu
IPC分类号： G01N23/06 , G01N23/04
CPC分类号： G01N23/04 , G01N2223/303 , G01N2223/423 , G01V5/0041
摘要： Disclosed are a method and a device for real-time mark for a high-energy X-ray dual-energy imaging container inspection system in the radiation imaging field. The method comprises the steps of emitting a first main beam of rays and a first auxiliary beam of rays having a first energy, and a second main beam of rays and a second auxiliary beam of rays having a second energy; causing the first and second main beams of rays transmitting through the article to be inspected; causing the first and second auxiliary beams of rays transmitting through at least one real-time mark material block; collecting values of the first and second main beams of rays that have transmitted through the article to be inspected as dual-energy data; collecting values of the first and second auxiliary beams of rays that have transmitted through the real-time mark material block as adjustment parameters; adjusting the set of classification parameters based on the adjustment parameters; and identifying the substance according to the dual-energy data based on adjusted classification parameters. The method according to the invention simplifies the mark procedure for a substance identification subsystem in a high-energy dual-energy system while improves the stability of the material differentiation result of the system.
摘要翻译：公开了用于在辐射成像领域中的高能量X射线双能量成像容器检查系统的实时标记的方法和装置。该方法包括以下步骤：发射第一主光束和具有第一能量的第一辅助光束和第二主射线束以及具有第二能量的第二辅助光束; 导致透过物品的第一和第二主光束被检查; 使得所述第一和第二辅助光束通过至少一个实时标记材料块传播; 收集通过待检测物品的第一和第二主光束的值作为双能数据; 收集通过实时标记材料块传输的第一和第二辅助光束的值作为调整参数; 根据调整参数调整分类参数集; 并根据调整后的分类参数，根据双能数据识别物质。根据本发明的方法简化了高能双能系统中物质识别子系统的标记程序，同时提高了系统材料分化结果的稳定性。

20. 发明授权

US07881424B2 Method for calibrating dual-energy CT system and method of image reconstruction 有权
标题翻译：校准双能CT系统的方法和图像重建方法
公开(公告)号：US07881424B2
公开(公告)日：2011-02-01
申请号：US12075463
申请日：2008-03-11
申请人： Li Zhang , Zhiqiang Chen , Gnowei Zhang , Jianping Cheng , Yuanjing Li , Yinong Liu , Yuxiang Xing , Ziran Zhao , Yongshun Xiao
发明人： Li Zhang , Zhiqiang Chen , Gnowei Zhang , Jianping Cheng , Yuanjing Li , Yinong Liu , Yuxiang Xing , Ziran Zhao , Yongshun Xiao
IPC分类号： G01N23/00
CPC分类号： G01T7/005 , G01T1/1648
摘要： A method for calibrating a dual-energy CT system and an image reconstruction method are disclosed to calculate images of atomic number and density of a scanned object as well as its attenuation coefficient images at any energy level. The present invention removes the effect from a cupping artifact due to X-ray beam hardening. The method for calibrating a dual-energy CT system is provided comprising steps of selecting at least two different materials, detecting penetrative rays from dual-energy rays penetrating said at least two different materials under different combinations of thickness to acquire projection values, and creating a lookup table in a form of correspondence between said different combinations of thickness and said projection values. The image reconstruction method is provided comprising steps of scanning an object with dual-energy rays to acquire dual-energy projection values, calculating projection values of base material coefficients corresponding to said dual-energy projection values based on a pre-created lookup table, and reconstructing an image of base material coefficient distribution based on said projection values of base material coefficients. In this way, images of atomic number and density of an object as well as its attenuation coefficient images can be calculated from the images of the distribution of base material coefficients. Compared with the prior art technique, the method proposed in the present invention has advantages of simple calibration procedure, high calculation precision and invulnerability to X-ray beam hardening.
摘要翻译：公开了用于校准双能量CT系统和图像重建方法的方法，以计算被扫描物体的原子序数和密度以及其在任何能级的衰减系数图像的图像。本发明消除了由于X射线束硬化引起的拔罐伪影的影响。提供了一种用于校准双能量CT系统的方法，包括以下步骤：选择至少两种不同的材料，从不同厚度的组合穿透所述至少两种不同材料的双能量射线检测穿透射线，以获得投影值，以所述不同的厚度组合和所述投影值之间的对应形式的查找表。提供了图像重建方法，包括以下步骤：用双能量射线扫描物体以获取双能量投影值，基于预先创建的查找表计算与所述双能量投影值相对应的基材系数的投影值，以及基于所述基材系数的投影值重构基材系数分布的图像。以这种方式，可以从基材系数分布的图像中计算出物体的原子数和密度以及衰减系数图像的图像。与现有技术相比，本发明提出的方法具有校准过程简单，计算精度高，X射线束硬化无效的优点。

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