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21. 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。

22. 发明申请

US20120014579A1 CT DEVICE AND METHOD BASED ON MOTION COMPENSATION 有权
标题翻译：基于运动补偿的CT装置和方法
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。

23. 发明申请

US20110024624A1 PHASE CONTRAST IMAGING METHOD AND APPARATUS 有权
标题翻译：相位对比成像方法和装置
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。

24. 发明申请

US20090129544A1 METHOD AND APPARATUS FOR SUBSTANCE IDENTIFICATION 有权
标题翻译：物质识别的方法和装置
公开(公告)号：US20090129544A1
公开(公告)日：2009-05-21
申请号：US12270908
申请日：2008-11-14
申请人： Zhiqiang Chen , Li Zhang , Kejun Kang , Xuewu Wang , Qingping Huang , Yuanjing Li , Yinong Liu , Ziran Zhao , Yongshun Xiao
发明人： Zhiqiang Chen , Li Zhang , Kejun Kang , Xuewu Wang , Qingping Huang , Yuanjing Li , Yinong Liu , Ziran Zhao , Yongshun Xiao
IPC分类号： G01N23/04
CPC分类号： G01N23/04 , G01N23/087 , G01N2223/423
摘要： A method for substance identification and an apparatus thereof are disclosed. The method comprises comprising steps of: transmitting an object under inspection using high-energy rays and low-energy rays, so as to obtain a high-energy transmission image and a low-energy transmission image for the object, wherein a value of each pixel in the high-energy image indicates a high-energy transparency of the high-energy rays with respect to corresponding parts of the object, and a value of each pixel in the low-energy image indicates a low-energy transparency of the low-energy rays with respect to corresponding parts of the object; calculating a value of a first function for the high-energy transparency and a value of a second function for the high-energy transparency and the low-energy transparency, for each pixel; and classifying locations determined by the value of the first function and the value of the second function using a pre-created classification curve, so as to identify the type of the substance of a part of the object corresponding to each pixel. With the present invention, it is possible to not only obtain a transmission image of the object, but also obtain material information in the object.
摘要翻译：公开了一种物质识别方法及其装置。该方法包括以下步骤：使用高能射线和低能射线发射被检查物体，以获得该物体的高能透射图像和低能透射图像，其中每个像素的值在高能量图像中表示高能量射线相对于物体的相应部分的高能量透明度，并且低能量图像中的每个像素的值表示低能量透射度的低能量相对于物体的相应部分的射线; 对于每个像素，计算用于高能量透明度的第一函数的值和用于高能量透明度和低能量透明度的第二函数的值; 以及使用预先创建的分类曲线对由第一函数的值和第二函数的值确定的位置进行分类，以便识别与每个像素对应的对象的一部分的实体的类型。利用本发明，不仅可以获得对象的发送图像，而且可以获得对象中的素材信息。

25. 发明申请

US20120140874A1 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：US20120140874A1
公开(公告)日：2012-06-07
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： A61B6/03 , A61B6/08
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。

26. 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。

27. 发明授权

US08731268B2 CT device and method based on motion compensation 有权
标题翻译：基于运动补偿的CT装置和方法
公开(公告)号：US08731268B2
公开(公告)日：2014-05-20
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。

28. 发明授权

US08036337B2 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：US08036337B2
公开(公告)日：2011-10-11
申请号：US12238515
申请日：2008-09-26
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。

29. 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.

30. 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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