公开(公告)号：US20120014579A1

公开(公告)日：2012-01-19

申请号：US13142725

申请日：2010-12-27

申请人： Liang Li ,  Zhiqiang Chen ,  Li Zhang ,  Kejun Kang ,  Yuanjing Li ,  Ziran Zhao ,  Yinong Liu ,  Yuxiang Xing ,  Xin Jin

发明人： Liang Li ,  Zhiqiang Chen ,  Li Zhang ,  Kejun Kang ,  Yuanjing Li ,  Ziran Zhao ,  Yinong Liu ,  Yuxiang Xing ,  Xin Jin

IPC分类号： G06K9/00

CPC分类号： A61B6/5264 ,  A61B6/032 ,  G06T7/285 ,  G06T11/005 ,  G06T2207/10081 ,  G06T2211/412

摘要： A CT device and method based on motion compensation are proposed. The present invention obtains motion parameters of a target object by using a stereo-vision-based motion measurement system, and then implements motion compensation through the technology based on reconstructed image matrix transformation, thereby obtaining a clear 2D/3D CT image while eliminating motion artifacts. The present invention can effectively eliminate motion artifacts caused by the scanned object's own motions in the CT scanning, and can be easily embedded into the existing CT scanning equipments. The present invention can improve quality of the CT images, and is especially important for CT imaging of some special groups of people that can not control their own motions, such as Parkinson's patients, infants, living mouse and so on. It can also improve ultra-high-resolution imaging of human body.

摘要翻译： 提出了一种基于运动补偿的CT装置和方法。 本发明通过使用基于立体视觉的运动测量系统获得目标对象的运动参数，然后通过基于重构图像矩阵变换的技术实现运动补偿，从而获得清晰的2D / 3D CT图像，同时消除运动伪影 。 本发明能够有效地消除CT扫描中被扫描物体自身运动引起的运动伪影，并且可以容易地嵌入现有的CT扫描设备中。 本发明可以提高CT图像的质量，对于一些不能控制自己的运动的特殊人群，如帕金森患者，婴儿，生活小鼠等，对CT成像尤为重要。 它还可以改善人体的超高分辨率成像。

公开(公告)号：US07962283B2

公开(公告)日：2011-06-14

申请号：US11644137

申请日：2006-12-22

申请人： Li Zhang ,  Zhiqiang Chen ,  Lijun Wang ,  Zhiming Wang ,  Ziran Zhao ,  Yuxiang Xing ,  Yongshun Xiao ,  Yuanjing Li ,  Yinong Liu

发明人： Li Zhang ,  Zhiqiang Chen ,  Lijun Wang ,  Zhiming Wang ,  Ziran Zhao ,  Yuxiang Xing ,  Yongshun Xiao ,  Yuanjing Li ,  Yinong Liu

IPC分类号： G01C21/30 ,  G01C21/32

CPC分类号： G05D1/0246 ,  G05D2201/0216

摘要： The present invention relates to the deviation-correction system for positioning of moving objects, and discloses a deviation-correction system for positioning of moving objects and the motion-tracking method thereof. The system includes a control system for receiving motion parameters required for deviation-correction, and sending commands to an actuator to control a moving object based on the motion parameters, the deviation-correction system for positioning of moving objects further comprising: a reference object which is set as a specified motion trail for the moving object; an image capturing system for acquiring successive digital image data upon the moving object moves; a motion tracking system for performing a motion tracking algorithm based on the digital image data transmitted by the image capturing system to judge whether the current motion state needs to be corrected and then transmitting the motion parameters required for deviation-correction to the control system.

摘要翻译： 本发明涉及用于移动物体的定位的偏差校正系统，并且公开了用于移动物体的定位的偏差校正系统及其运动跟踪方法。 该系统包括用于接收偏差校正所需的运动参数的控制系统，以及基于运动参数向致动器发送命令以控制运动物体的运动对象的偏移校正系统，还包括：参考对象， 被设置为移动物体的指定运动轨迹; 用于在移动物体移动时获取连续的数字图像数据的图像捕获系统; 运动跟踪系统，用于基于由图像捕获系统发送的数字图像数据执行运动跟踪算法，以判断当前运动状态是否需要被校正，然后向控制系统发送偏差校正所需的运动参数。

公开(公告)号：US20110024624A1

公开(公告)日：2011-02-03

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： H01L31/09 ,  H01L31/0232

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 comprises: a terahertz radiation emitter for generating terahertz radiation, which illuminates an object to interact with the object; a diffraction grating, which is illuminated by the terahertz radiation that has interacted with the object; a terahertz radiation detector for measuring, 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 a data collecting and processing system for retrieving a phase contrast image of the object from the intensity distributions.

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。 用于相位对比成像的装置包括：太赫兹辐射发射器，用于产生太赫兹辐射，其照亮物体与物体相互作用; 衍射光栅，其被与物体相互作用的太赫兹辐射照射; 太赫兹辐射检测器，用于针对每个不同的光栅位置，在衍射场中测量与物体和光栅相互作用的太赫兹辐射的强度分布; 以及用于从强度分布中检索对象的相位对比图像的数据收集和处理系统。

公开(公告)号：US07852981B2

公开(公告)日：2010-12-14

申请号：US12318190

申请日：2008-12-23

申请人： Xilei Luo ,  Zhiqiang Chen ,  Yuanjing Li ,  Yulan Li ,  Yinong Liu ,  Li Zhang ,  Ziran Zhao ,  Wanlong Wu ,  Shuqing Zhao ,  Bin Sang ,  Hailin Wang ,  Shuo Cao ,  Dong Lin ,  Zhimin Zheng

发明人： Xilei Luo ,  Zhiqiang Chen ,  Yuanjing Li ,  Yulan Li ,  Yinong Liu ,  Li Zhang ,  Ziran Zhao ,  Wanlong Wu ,  Shuqing Zhao ,  Bin Sang ,  Hailin Wang ,  Shuo Cao ,  Dong Lin ,  Zhimin Zheng

IPC分类号： A61B6/03 ,  H05G1/64

CPC分类号： A61B6/032 ,  A61B6/4266 ,  A61B6/4291 ,  A61B6/482 ,  G21K1/025

摘要： Disclosed is a detector device, comprising: an adjustable positioning base and a detector module. The adjustable positioning base includes: a horizontal plate being able to fixedly connect onto an annular rotation table or disk; and a vertical plate extending from the horizontal plate and generally perpendicular to the horizontal plate. A horizontal through long groove is provided at one side of the vertical plate, and the detector module is able to fixedly installed in said horizontal through long groove of the adjustable positioning base. By employing the technical solution defined in the present invention, the detector device has a compact structure, and precision adjustment and positioning for the detector device can be achieved. In addition, the present invention also provides a CT inspection system having the above detector device.

摘要翻译： 公开了一种检测器装置，包括：可调定位基座和检测器模块。 可调定位基座包括：能够固定地连接到环形旋转台或盘上的水平板; 以及从水平板延伸并且大致垂直于水平板的垂直板。 在垂直板的一侧设置水平通过长槽，检测器模块能够通过可调定位基座的长槽固定在所述水平方向上。 通过采用本发明所定义的技术方案，检测装置结构紧凑，可以实现检测装置的精确调整和定位。 此外，本发明还提供一种具有上述检测器装置的CT检查系统。

公开(公告)号：US20070116177A1

公开(公告)日：2007-05-24

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。

公开(公告)号：US20060133566A1

公开(公告)日：2006-06-22

申请号：US11285395

申请日：2005-11-23

申请人： Yulan Li ,  Haifeng Hu ,  Yinong Liu ,  Zhiqiang Chen ,  Kejun Kang ,  Li Zhang ,  Wanlong Wu ,  Yuanjing Li ,  Yi Wang ,  Wenjun He ,  Mingrui Qi

发明人： Yulan Li ,  Haifeng Hu ,  Yinong Liu ,  Zhiqiang Chen ,  Kejun Kang ,  Li Zhang ,  Wanlong Wu ,  Yuanjing Li ,  Yi Wang ,  Wenjun He ,  Mingrui Qi

IPC分类号： G01N23/04

CPC分类号： G01N23/20066 ,  G01N23/203 ,  G01N2223/637 ,  G01V5/0025

摘要： A method and an apparatus for liquid safety-detection by backscatter with a radiation source relate to a radiation detecting technology field. The invention comprises using a radiation source, a collimator, a detector, a data collector and a computer data processor, and has the main steps of: 1) a liquid article to be detected being placed onto a rotatable platform; 2) the ray emitted from the radiation source causing Compton scattering at the surface of the liquid after passing through the package layer of the liquid article; 3) the scattering photons being received by the detector after passing the collimator; 4) the detector transmitting the received data to the data collector; and 5) the data collector transmitting the amplified and shaped data to the computer data processor, which processes the data to obtain the liquid density of the detected article, then compares the result with the densities of dangerous articles in a current database, and gives warning if finding that the density of the detected article is consistent with that of a dangerous article. Comparing to the prior art, the invention has a convenient use, a rapid and accurate detection, a strong anti-interference, a high use safety and reliability, and an easy protection.

摘要翻译： 用于通过具有辐射源的后向散射进行液体安全检测的方法和装置涉及辐射检测技术领域。 本发明包括使用辐射源，准直仪，检测器，数据采集器和计算机数据处理器，并且具有以下主要步骤：1）待检测的液体物品被放置在可旋转平台上; 2）从辐射源发出的射线，在液体物品的包装层穿过液体表面后会引起康普顿散射; 3）散射光子在通过准直仪之后被检测器接收; 4）检测器将接收的数据发送到数据采集器; 5）数据收集器将放大和成形数据发送到计算机数据处理器，处理数据以获得检测到的物品的液体密度，然后将结果与当前数据库中的危险物品的密度进行比较，并给出警告 如果发现检测到的物品的密度与危险物品的密度一致。 与现有技术相比，本发明方便使用，检测快速准确，抗干扰性强，使用安全可靠，易于保护。

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。

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。

公开(公告)号：US20100040192A1

公开(公告)日：2010-02-18

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

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。

公开(公告)号：US07634055B2

公开(公告)日：2009-12-15

申请号：US11634330

申请日：2006-12-05

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： G01B15/02 ,  G01N23/04

CPC分类号： G01N23/10

摘要： Disclosed is a method and a device for security-inspection of liquid articles with radiations, which relate to the field of radiation inspection technology. The method comprises steps of acquiring original environment information, emitting radiation beams to transmit the liquid articles, receiving the radiation beams transmitted through the liquid articles to form multi-angle projection data, computing a radiation absorption coefficient of the liquid articles to be detected by inverse operation of the multi-angle projection data, based on the initial environmental information and the uniformity of the liquid articles, and comparing the radiation absorption coefficients with the preset data to get the relevant information of the liquid articles. Comparing with the prior art, the present invention is not subjected to affection of cuter package of the liquid article, and is advantageous of high anti-jamming high accuracy, high safety and reliability, low cost and small size.

摘要翻译： 公开了一种与放射线检测技术相关的液体物品的辐射安全检查的方法和装置。 该方法包括以下步骤：获取原始环境信息，发射辐射束以透射液体物品，接收通过液体物品传播的辐射束以形成多角度投影数据;计算待反应的待检测液体物品的辐射吸收系数 基于初始环境信息和液体制品的均匀性，多个投影数据的操作，以及将辐射吸收系数与预设数据进行比较以获得液体物品的相关信息。 与现有技术相比，本发明不受液体制品外包装的影响，具有抗干扰性高，安全可靠，成本低，体积小的优点。