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11. 发明授权

US07424089B2 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：US07424089B2
公开(公告)日：2008-09-09
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
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。

12. 发明授权

US08039803B2 Phase contrast imaging method and apparatus 有权
标题翻译：相位成像方法和装置
公开(公告)号：US08039803B2
公开(公告)日：2011-10-18
申请号：US12920161
申请日：2009-02-16
申请人： Kejun Kang , Zhiqiang Chen , Li Zhang , Yingxin Wang , Ziran Zhao , Yuanjing Li , Yinong Liu , Zhifeng Huang , Yuxiang Xing
发明人： Kejun Kang , Zhiqiang Chen , Li Zhang , Yingxin Wang , Ziran Zhao , Yuanjing Li , Yinong Liu , Zhifeng Huang , Yuxiang Xing
IPC分类号： G01J5/02
CPC分类号： G01N21/3581
摘要： A method for phase contrast imaging comprises: illuminating an object by terahertz radiation such that the terahertz radiation interacts with the object; illuminating a diffraction grating by the terahertz radiation that has interacted with the object; translating the diffraction grating along the direction of the grating wave vector, to measure, for each of different grating positions, an intensity distribution of the terahertz radiation that has interacted with the object and with the grating in a diffraction field; and retrieving a phase contrast image of the object from the intensity distributions. An apparatus for phase contrast imaging is also provided.
摘要翻译：一种用于相位对比成像的方法包括：用太赫兹辐射照射物体，使得太赫兹辐射与物体相互作用; 用与物体相互作用的太赫兹辐射照射衍射光栅; 沿着光栅波矢的方向平移衍射光栅，以测量每个不同的光栅位置，在衍射场中与物体和光栅相互作用的太赫兹辐射的强度分布; 以及从所述强度分布中检索所述对象的相位对比图像。还提供了一种用于相位成像的装置。

13. 发明授权

US07512213B2 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：US07512213B2
公开(公告)日：2009-03-31
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。

14. 发明授权

US07499522B2 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：US07499522B2
公开(公告)日：2009-03-03
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： G01N23/04
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; 所述数据收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。

15. 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。

16. 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。

17. 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。

18. 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。

19. 发明授权

US08494114B2 Method and device for inspection of liquid articles 有权
公开(公告)号：US08494114B2
公开(公告)日：2013-07-23
申请号：US13089874
申请日：2011-04-19
申请人： Zhiqiang Chen , Li Zhang , Xuewu Wang , Haifeng Hu , Hongxin Wu , Yuanjing Li , Yinong Liu , Ziran Zhao , Yuxiang Xing , Hu Tang , Yumin Yi , Jinyu Zhang
发明人： Zhiqiang Chen , Li Zhang , Xuewu Wang , Haifeng Hu , Hongxin Wu , Yuanjing Li , Yinong Liu , Ziran Zhao , Yuxiang Xing , Hu Tang , Yumin Yi , Jinyu Zhang
IPC分类号： G01N23/06
CPC分类号： G01N23/10 , A61B6/027 , G01N23/046 , G01N2001/022 , G01N2223/419 , G01N2223/423 , G01N2223/637 , G01N2223/639 , G01V5/00
摘要： Disclosed are a method and a device for security-inspection of liquid articles with dual-energy CT imaging. The method comprises the steps of obtaining one or more CT images including physical attributes of liquid article to be inspected by CT scanning and a dual-energy reconstruction method; acquiring the physical attributes of each liquid article from the CT image; and determining whether there are drugs concealed in the inspected liquid article based on the difference between the acquired physical attributes and reference physical attributes of the inspected liquid article. The CT scanning can be implemented by a normal CT scanning technique, or a spiral CT scanning technique. In the normal CT scanning technique, the scan position can be preset, or set by the operator with a DR image, or set by automatic analysis of the DR image.

20. 发明授权

US08320523B2 Method and device for inspection of liquid articles 有权
标题翻译：液体制品检验方法及装置
公开(公告)号：US08320523B2
公开(公告)日：2012-11-27
申请号：US13177905
申请日：2011-07-07
申请人： Li Zhang , Zhiqiang Chen , Xuewu Wang , Haifeng Hu , Hongxin Wu , Yuanjing Li , Yinong Liu , Ziran Zhao , Yuxiang Xing , Hu Tang , Yumin Yi , Jinyu Zhang
发明人： Li Zhang , Zhiqiang Chen , Xuewu Wang , Haifeng Hu , Hongxin Wu , Yuanjing Li , Yinong Liu , Ziran Zhao , Yuxiang Xing , Hu Tang , Yumin Yi , Jinyu Zhang
IPC分类号： G01N23/04
CPC分类号： G01N9/24 , G01V5/00
摘要： Disclosed are a method and a device for security-inspection of liquid articles with dual-energy CT imaging. The method comprises the steps of obtaining one or more CT images including physical attributes of liquid article to be inspected by CT scanning and a dual-energy reconstruction method; acquiring the physical attributes of each liquid article from the CT image; and determining whether the inspected liquid article is dangerous based on the physical attributes. The CT scanning can be implemented by a normal CT scanning technique, or a spiral CT scanning technique. In the normal CT scanning technique, the scan position can be preset, or set by the operator with a DR image, or set by automatic analysis of the DR image.
摘要翻译：公开了一种用于双能CT成像的液体物品的安全检查方法和装置。该方法包括以下步骤：通过CT扫描获得包括待检查的液体物品的物理属性的一个或多个CT图像和双能量重建方法; 从CT图像获取每个液体物品的物理属性; 并根据物理属性确定被检液体是否危险。 CT扫描可以通过正常的CT扫描技术或螺旋CT扫描技术来实现。在正常的CT扫描技术中，扫描位置可以由操作员预先设置，或者通过DR图像设置，或者通过DR图像的自动分析设置。

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