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61. 发明授权

US08306180B2 Image reconstruction method for high-energy, dual-energy CT system 有权
标题翻译：高能双能CT系统图像重建方法
公开(公告)号：US08306180B2
公开(公告)日：2012-11-06
申请号：US12509977
申请日：2009-07-27
申请人： Li Zhang , Zhiqiang Chen , Kejun Kang , Haifeng Hu , Yuxiang Xing , Xinhui Duan , Yuanjing Li , Yinong Liu , Qingping Huang
发明人： Li Zhang , Zhiqiang Chen , Kejun Kang , Haifeng Hu , Yuxiang Xing , Xinhui Duan , Yuanjing Li , Yinong Liu , Qingping Huang
IPC分类号： A61B6/00 , G01N23/04
CPC分类号： G01V5/005 , G01V5/0041
摘要： Disclosed is an image reconstruction method in a high-energy dual-energy CT system. The method comprises steps of scanning an objection with high-energy dual-energy rays to obtain high-energy dual-energy projection values, calculating projection values of base material coefficients corresponding to the dual-energy projection values on the basis of a pre-created lookup table or by analytically solving a set of equations, and obtaining an image of base material coefficient distribution based on the projection values of base material coefficients. The method provides a solution for reconstruction with high-energy dual energy CT technology and thus a more effective approach for substance identification and contraband inspection, thereby bringing a significant improvement on accuracy and efficiency in security inspection.
摘要翻译：公开了一种高能双能CT系统中的图像重建方法。该方法包括以高能双能量射线扫描异物以获得高能双能量投影值的步骤，基于预先创建的计算来计算对应于双能量投影值的基材系数的投影值查找表或通过分析求解一组方程，并且基于基材系数的投影值获得基材系数分布的图像。该方法为高能双能CT技术的重建提供了解决方案，是物质识别和违禁检测的有效途径，从而大大提高了安全检测的准确性和效率。

62. 发明申请

US20100246763A1 METHOD AND SYSTEM FOR CONTRABAND DETECTION USING PHOTONEUTRONS AND X-RAYS 有权
标题翻译：使用光子束和X射线进行检测的方法和系统
公开(公告)号：US20100246763A1
公开(公告)日：2010-09-30
申请号：US12665301
申请日：2008-06-19
申请人： Kejun Kang , Haifeng Hu , Yigang Yang , Zhiqiang Chen , Qitian Miao , Jianping Cheng , Yuanjing Li
发明人： Kejun Kang , Haifeng Hu , Yigang Yang , Zhiqiang Chen , Qitian Miao , Jianping Cheng , Yuanjing Li
IPC分类号： G01N23/04 , G01N23/09
CPC分类号： G21B1/19 , C09D5/1606 , G21G4/02 , H05H6/00
摘要： A method and a system for contraband detection in an object using photoneutrons and x-rays includes an x-ray generator that generates an x-ray main beam including a first x-ray beam and a second x-ray beam, the first x-ray beam being directed to pass through the object. A photoneutron conversion target is arranged to receive the second x-ray beam so as to generate photoneutrons, the photoneutrons being directed to enter the object and react with the object to emit characteristic γ-rays. An x-ray detecting arrangement is arranged to receive the first x-ray beam that has passed through the object in order to perform x-ray imaging detection of the detected object. A γ-ray detecting arrangement is arranged to receive the characteristic γ-rays in order to perform neutron detection of the object based on the characteristic γ-rays. The x-ray imaging detection and the neutron detection are simultaneously performed.
摘要翻译：使用光子中子和X射线的物体中的违禁品检测方法和系统包括产生包括第一X射线束和第二X射线束的X射线主光束的X射线发生器，射线束被引导通过物体。光子中子转换目标被布置成接收第二x射线束以产生光子酮，所述光子酮被引导进入物体并与物体反应以发射特征γ射线。 X射线检测装置被布置成接收已经通过物体的第一x射线束，以对被检测物体进行X射线成像检测。 γ射线检测装置被布置成接收特征γ射线，以便基于特征γ射线进行物体的中子检测。同时进行x射线成像检测和中子检测。

63. 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。

64. 发明授权

US07386093B2 Method and an apparatus for liquid safety-detection with a radiation source 有权
标题翻译：用于辐射源的液体安全检测方法和装置
公开(公告)号：US07386093B2
公开(公告)日：2008-06-10
申请号：US11285398
申请日：2005-11-23
申请人： Wanlong Wu , Haifeng Hu , Yuanjing Li , Zhiqiang Chen , Kejun Kang , Yulan Li , Li Zhang , Yinong Liu , Xuewu Wang , Bin Sang , Hailin Wang
发明人： Wanlong Wu , Haifeng Hu , Yuanjing Li , Zhiqiang Chen , Kejun Kang , Yulan Li , Li Zhang , Yinong Liu , Xuewu Wang , Bin Sang , Hailin Wang
IPC分类号： G01N23/083 , G01N23/087
CPC分类号： G01V5/0016 , G01N9/24 , G01N23/10
摘要： A method and an apparatus for liquid safety-detection with a radiation source relate to a radiation detecting technology. The main steps of the method of the invention are: conveying an article to be detected into an operation zone within a radiation shield; allowing a ray beam to be emitted from the radiation source, to pass through the article to be detected, and to be received by a detector; transmitting the received ray signal to a data collector by the detector; amplifying and forming the ray signal, and transmitting such data to a data processing computer by the data collector, and transmitting a data collected by thickness measuring probing heads to the data processing computer by the same; and processing a data from the data collector and a data from the thickness measuring probing heads to derive the density and atomic number of the detected liquid, comparing a result with the densities and atomic numbers of dangerous articles in a existing database, and displaying the detected information of the detected article, by the data processing computer. Comparing to the prior art, the invention is not subjected to the affection of the outside package of an article and has great anti-interference, and has the features of small volume, high accuracy of detection, easy shielding, and high use safety and reliability.
摘要翻译：用于具有辐射源的液体安全检测的方法和装置涉及放射线检测技术。本发明方法的主要步骤是将待检测物品输送到辐射屏蔽内的操作区域; 允许射线束从辐射源发射，通过要检测的物品，并被检测器接收; 通过检测器将接收到的射线信号传输到数据采集器; 放大和形成射线信号，并由数据收集器将这些数据发送到数据处理计算机，并将由厚度测量探测头收集的数据发送到数据处理计算机; 并且从数据收集器处理数据和来自厚度测量探测头的数据以导出检测到的液体的密度和原子序数，将结果与现有数据库中的危险物品的密度和原子数进行比较，并显示检测到的通过数据处理计算机检测到的物品的信息。与现有技术相比，本发明不受制品外包装的影响，抗干扰性强，具有体积小，检测精度高，屏蔽方便，使用安全可靠的特点。

65. 发明申请

US20070096036A1 Method and equipment for discriminating materials by employing fast neutron and continuous spectral X-ray 有权
标题翻译：采用快中子和连续光谱X射线鉴别材料的方法和设备
公开(公告)号：US20070096036A1
公开(公告)日：2007-05-03
申请号：US11353472
申请日：2006-02-14
申请人： Kejun Kang , Haifeng Hu , Yali Xie , Qitian Miao , Yigang Yang , Yuanjing Li , Zhiqiang Chen , Xuewu Wang
发明人： Kejun Kang , Haifeng Hu , Yali Xie , Qitian Miao , Yigang Yang , Yuanjing Li , Zhiqiang Chen , Xuewu Wang
IPC分类号： G01N23/05
CPC分类号： G01N23/04 , G01T3/00 , G01V5/0033
摘要： Disclosed is a method of discriminating materials by employing fast neutron and continuous spectral X-ray and an equipment for the same. The method comprising the steps of: (a) transmitting a fast neutron beam produced by a fast neutron source and a continuous spectral X-ray beam produced by a continuous spectral X-ray source through inspected objects; (b) directly measuring the intensity of the transmitted X-rays and the intensity of the transmitted neutrons by a X-ray detector array and a neutron detector array respectively; and (c) identifying the materials of the inspected object by Z-dependency curves formed by the attenuation differences between the neutron beam and X-ray beam transmitted through different materials of the inspected object. This direct measurement of transmitted dual-ray technique has much more efficient than secondary radiations measurement such as neutron activation analysis, has much more material discrimination sensitivity than dual-energy x-ray technique. The respective measurements of neutrons and x-rays make the usages of high detect efficiency neutron detectors and x-ray detectors possible. The using continuous spectral x-ray produced by Linac adds more advantages such as: high penetration ability, high spatial resolution, and high image quality over monoenergetic dual-ray technique.
摘要翻译：本发明公开了一种采用快中子和连续光谱X射线鉴别材料的方法及其设备。该方法包括以下步骤：（a）通过检测对象发射由快中子源产生的快中子束和由连续光谱X射线源产生的连续光谱X射线束; （b）分别通过X射线检测器阵列和中子检测器阵列直接测量透射的X射线的强度和发射的中子的强度; 和（c）通过由穿过检测对象的不同材料的中子束和X射线束之间的衰减差形成的Z依赖曲线识别被检物体的材料。传输双光线技术的这种直接测量比二次辐射测量（例如中子活化分析）更有效，比双能X射线技术具有更多的材料辨别灵敏度。中子和x射线的相应测量使得高检测效率的中子探测器和x射线探测器成为可能。 Linac生产的使用连续光谱X射线增加了更多的优点，如：单能量双光线技术，高穿透能力，高空间分辨率和高图像质量。

66. 发明申请

US20060239402A1 CT method and apparatus for liquid safety-detection with a radiation source 有权
公开(公告)号：US20060239402A1
公开(公告)日：2006-10-26
申请号：US11286559
申请日：2005-11-23
申请人： Haifeng Hu , Yuanjing Li , Kejun Kang , Zhiqiang Chen , Yinong Liu , Yulan Li , Li Zhang , Wanlong Wu , Ziran Zhao , Xilei Luo , Bin Sang
发明人： Haifeng Hu , Yuanjing Li , Kejun Kang , Zhiqiang Chen , Yinong Liu , Yulan Li , Li Zhang , Wanlong Wu , Ziran Zhao , Xilei Luo , Bin Sang
IPC分类号： G01N23/06 , G01N23/04 , G01B15/02
CPC分类号： G01N9/24 , G01N2001/022
摘要： A CT method and an apparatus for liquid safety-detection with a radiation source relate to a radiation imaging detecting technology field. The invention comprises using a radiation source, a detector and data collector, a computer data processor; and the main steps are: 1) a liquid article to be detected being placed onto a rotary platform which is rotatable; 2) the ray emitted from the radiation source passing through the liquid article, and being received and formed into projection data by the detector and data collector; and 3) the projection data being transmitted to the computer data processor, which processes it to obtain the liquid density of the detected article, compares the result with the densities of dangerous articles in a current database, and then visually displays the detected information of the detected liquid article. Comparing to the prior art, the invention has a small volume, a strong anti-interference, a high accuracy of detection, an easy shielding, and a high use safety and reliability.

67. 发明申请

US20090065698A1 CONTROL UNIT AND CONTROL METHOD FOR RADIATION SOURCE AND RADIATION INSPECTION SYSTEM AND METHOD THEREOF 有权
标题翻译：辐射源和辐射检测系统的控制单元和控制方法及其方法
公开(公告)号：US20090065698A1
公开(公告)日：2009-03-12
申请号：US11997454
申请日：2006-12-22
申请人： Zhiqiang Chen , Yuanjing Li , Yinong Liu , Junli Li , Hua Peng , Yaohong Liu , Shangmin Sun , Jinyu Zhang , Qingjun Zhang , Li Zhang , Yali Xie , Yanli Deng , Ming Ruan , Siyuan Liang , Guang Yang , Wei Jia
发明人： Zhiqiang Chen , Yuanjing Li , Yinong Liu , Junli Li , Hua Peng , Yaohong Liu , Shangmin Sun , Jinyu Zhang , Qingjun Zhang , Li Zhang , Yali Xie , Yanli Deng , Ming Ruan , Siyuan Liang , Guang Yang , Wei Jia
IPC分类号： G01N23/02
CPC分类号： G01N23/10 , G01V5/0016
摘要： A radiation inspection system is disclosed. The radiation inspection system comprises: an inspection passage through which a moving object under inspection can pass, a radiation source disposed on a side of the inspection passage for emitting radiation, an array of detectors disposed on the other side of the inspection passage opposite to the radiation source for receiving the radiation emitted from the radiation source, a detector for detecting the moving object, and a controller for receiving a signal from the detector and controlling the radiation source to emit radiation when the detector detects the moving object for radiation imaging and inspection of the moving object. According to the radiation inspection system, the controller can control the radiation source to automatically emit radiation beam based on the detection signal from the detector for inspecting the moving object. As a result, inspection efficiency is improved, safety is increased, and misoperation of the radiation source is eliminated.
摘要翻译：公开了一种辐射检查系统。辐射检查系统包括：被检查的运动物体可以穿过的检查通道，设置在检查通道的侧面用于发射辐射的辐射源，设置在与检查通道相对的检查通道的另一侧的检测器阵列用于接收从辐射源发射的辐射的辐射源，用于检测移动物体的检测器，以及用于当检测器检测到用于放射线成像和检查的移动物体时从检测器接收信号并控制辐射源发射辐射的控制器的移动物体。根据辐射检测系统，控制器可以根据来自检测器的检测信号，控制辐射源自动发射辐射束，以检测移动物体。结果，提高了检查效率，增加了安全性，并且消除了辐射源的误操作。

68. 发明授权

US07911592B2 Method and system for identifying moving object, and method and system for inspecting moving object by radiation imaging 有权
标题翻译：用于识别移动物体的方法和系统，以及通过辐射成像检测移动物体的方法和系统
公开(公告)号：US07911592B2
公开(公告)日：2011-03-22
申请号：US11997465
申请日：2006-12-25
申请人： Zhiqiang Chen , Yuanjing Li , Yinong Liu , Junli Li , Hua Peng , Yaohong Liu , Shangmin Sun , Jinyu Zhang , Qingjun Zhang , Li Zhang , Yali Xie , Yanli Deng , Ming Ruan , Siyuan Liang , Guang Yang , Wei Jia
发明人： Zhiqiang Chen , Yuanjing Li , Yinong Liu , Junli Li , Hua Peng , Yaohong Liu , Shangmin Sun , Jinyu Zhang , Qingjun Zhang , Li Zhang , Yali Xie , Yanli Deng , Ming Ruan , Siyuan Liang , Guang Yang , Wei Jia
IPC分类号： G01C3/08
CPC分类号： G01V8/12 , G01B11/24 , G01V5/0066 , G08G1/015 , G08G1/04
摘要： Disclosed is a method for identifying a moving object, comprising: a driving-in step of moving a moving object into a passage, a velocity measuring step of measuring a moving velocity of the moving object, a light beam emitting step of emitting light beams from one side of the passage, a light beam receiving step of receiving the light beams not shielded by the moving object at other side of the passage, a profile determining step of determining a profile of at least one portion of the moving object based on the received light beams and the measured moving velocity of the moving object, and an identifying step of determining type of the moving object by comprising the profile of the at least one portion of the moving object with information of moving objects stored previously. The method and the system according to the present invention can adopt corresponding scanning controlling manners for different vehicles, so that inspection information of inspected vehicles is complete, inspection images are of high quality, and radiation dose received by drivers are minimal.
摘要翻译：公开了一种用于识别移动物体的方法，包括：将移动物体移动到通道中的驱入步骤，测量移动物体的移动速度的速度测量步骤，从...发射光束的光束发射步骤通道的一侧，光束接收步骤，接收未被通道另一侧的移动物体屏蔽的光束;轮廓确定步骤，基于接收到的移动物体的至少一部分的轮廓确定光束和所测量的移动物体的移动速度;以及识别步骤，通过将运动物体的至少一部分的轮廓与先前存储的运动物体的信息相结合来确定运动物体的类型。根据本发明的方法和系统可以对不同的车辆采用相应的扫描控制方式，使检查车辆的检查信息完整，检查图像质量高，驾驶员接收的辐射剂量最小。

69. 发明申请

US20080089476A1 Apparatus and method for quick imaging and inspecting moving target 有权
标题翻译：快速成像和检测移动目标的装置和方法
公开(公告)号：US20080089476A1
公开(公告)日：2008-04-17
申请号：US11642149
申请日：2006-12-20
申请人： Zhiqiang Chen , Yuanjing Li , Yinong Liu , Junli Li , Hua Peng , Yaohong Liu , Shangmin Sun , Jinyu Zhang , Qingjun Zhang , Li Zhang , Yali Xie , Yanli Deng , Ming Ruan , Siyuan Liang , Guang Yang , Wei Jia
发明人： Zhiqiang Chen , Yuanjing Li , Yinong Liu , Junli Li , Hua Peng , Yaohong Liu , Shangmin Sun , Jinyu Zhang , Qingjun Zhang , Li Zhang , Yali Xie , Yanli Deng , Ming Ruan , Siyuan Liang , Guang Yang , Wei Jia
IPC分类号： G01N23/04
CPC分类号： G01V5/0066
摘要： An apparatus for quick imaging and inspecting a moving target, including a passage for the moving target passing therethrough, a scanning and imaging device irradiating a radiation beam to the moving target passing through the passage to form an image thereof for inspection, a first determination unit for determining whether the moving target has entered the passage and for counting the moving target entering the passage, a second determination unit for determining the moving speed of the moving target in the passage; and a control unit for controlling the second determination unit to determine the moving speed of the moving target based on the detection signal from the first determination unit indicating the moving target having entered the passage, and for controlling the scanning and imaging device to irradiate a radiation beam for the inspection of the moving target with a frequency corresponding to the moving speed of the moving target based on the determination result of the second determination unit.
摘要翻译：一种用于快速成像和检查移动目标的装置，包括用于穿过其中的移动目标的通道，将辐射束照射到穿过通道的移动目标以形成其图像以进行检查的扫描和成像装置，第一确定单元用于确定移动目标是否已经进入通道并且用于计数进入通道的移动目标;第二确定单元，用于确定移动目标在通道中的移动速度; 以及控制单元，用于控制第二确定单元，用于基于来自指示进入通道的移动目标的第一确定单元的检测信号来确定移动目标的移动速度，并且用于控制扫描和成像装置照射辐射基于第二确定单元的确定结果，以与移动目标的移动速度相对应的频率检查移动目标的光束。

70. 发明授权

US07688945B2 System for image inspection of movable object and dodging method 有权
标题翻译：可移动物体图像检测系统和躲避方法
公开(公告)号：US07688945B2
公开(公告)日：2010-03-30
申请号：US11997443
申请日：2006-12-25
申请人： Zhiqiang Chen , Yuanjing Li , Yinong Liu , Junli Li , Hua Peng , Yaohong Liu , Shangmin Sun , Jinyu Zhang , Qingjun Zhang , Li Zhang , Yali Xie , Yanli Deng , Ming Ruan , Siyuan Liang , Guang Yang , Wei Jia
发明人： Zhiqiang Chen , Yuanjing Li , Yinong Liu , Junli Li , Hua Peng , Yaohong Liu , Shangmin Sun , Jinyu Zhang , Qingjun Zhang , Li Zhang , Yali Xie , Yanli Deng , Ming Ruan , Siyuan Liang , Guang Yang , Wei Jia
IPC分类号： G01N23/04
CPC分类号： G01V5/0016 , G01V5/0066
摘要： The present invention discloses a system for imaging inspection of a movable object is provided, comprising: a first detecting unit configured to inspect whether a moving object to be inspected moves into a passage or not; a second detecting unit for inspecting whether a part to be shielded of the moving object passes into the passage or not and generating a passing signal after the first detecting unit inspects that the moving object to be inspected moves into the passage; a scan imaging device for emitting radiating beams for scan inspecting the moving object to be inspected; and a control system for generating a control signal for controlling the emitted radiating beams from the scan imaging device according to the passing signal from the second detecting unit. With the above system thereof, the imaging inspection of the moving object with rapid speed can be undertaken safely and reliably.
摘要翻译：本发明公开了一种可移动物体的成像检查系统，包括：第一检测单元，被配置为检查待检查的移动物体是否进入通道; 第二检测单元，用于检查被移动物体被遮蔽的部分是否进入通道，并且在第一检测单元检查待检查的移动物体进入通道之后产生通过信号; 扫描成像装置，用于发射用于扫描检查要检查的移动物体的辐射束; 以及控制系统，用于根据来自第二检测单元的通过信号产生用于控制从扫描成像装置发射的辐射束的控制信号。利用其上述系统，可以安全可靠地进行快速移动物体的成像检查。

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