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    Multiple-view-angle cargo security inspection method and system
    1.
    发明授权
    Multiple-view-angle cargo security inspection method and system 有权
    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。

    Multiple-view-angle cargo security inspection method and system
    2.
    发明申请
    Multiple-view-angle cargo security inspection method and system 有权
    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。

    X-Ct Scan System
    4.
    发明申请
    X-Ct Scan System 有权
    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。

    X-CT scan system
    5.
    发明授权
    X-CT scan system 有权
    X-CT扫描系统

    公开(公告)号：US07760852B2

    公开(公告)日：2010-07-20

    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。

    Cargo security inspection system and method
    6.
    发明授权
    Cargo security inspection system and method 有权
    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。

    Cargo security inspection system and method
    7.
    发明申请
    Cargo security inspection system and method 有权
    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。

    Imaging system
    9.
    发明授权
    Imaging system 有权
    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。

    System and method for reconstructing image by using straight-line trajectory scan
    10.
    发明申请
    System and method for reconstructing image by using straight-line trajectory scan 有权
    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。