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    METHODS AND DEVICES FOR LOCATING OBJECT IN CT IMAGING
    2.
    发明申请
    METHODS AND DEVICES FOR LOCATING OBJECT IN CT IMAGING 有权
    用于定位CT成像对象的方法和设备

    公开(公告)号：US20140093152A1

    公开(公告)日：2014-04-03

    申请号：US14037236

    申请日：2013-09-25

    申请人： Nuctech Company Limited ,  Tsinghua University

    发明人： Liang LI ,  Li ZHANG ,  Zhiqiang CHEN ,  Ziran ZHAO ,  Yuxiang XING ,  Yongshun XIAO ,  Qingli WANG

    IPC分类号： G06T7/00

    CPC分类号： G06T7/004 ,  A61B6/4085 ,  A61B6/466 ,  A61B6/469 ,  A61B6/5258 ,  G06T7/0012 ,  G06T7/55 ,  G06T7/70 ,  G06T11/006 ,  G06T2211/421 ,  G06T2211/436 ,  G16H40/63

    摘要： The present disclosure provides methods and devices for locating a plurality of interested objects in CT imaging. Location of the interested objects in the three-dimensional space can be determined by using three projection images that are substantially perpendicular to each other. The method can rapidly locate interested objects in a CT image without pre-reconstruction of the CT image even if there are a plurality of interested objects in the field of view. The algorithm does not involve interactive steps. The method is rapid and effective, and thus applicable to industrial applications.

    摘要翻译： 本公开提供了用于在CT成像中定位多个感兴趣对象的方法和装置。 可以通过使用基本上彼此垂直的三个投影图像来确定兴趣对象在三维空间中的位置。 即使在视野中存在多个感兴趣的对象，该方法也可以快速定位CT图像中的感兴趣的对象，而无需对CT图像进行预重建。 该算法不涉及交互式步骤。 该方法快速有效，适用于工业应用。

    CT INSPECTION SYSTEM AND CT IMAGING METHOD
    4.
    发明申请
    CT INSPECTION SYSTEM AND CT IMAGING METHOD 审中-公开

    公开(公告)号：US20190204243A1

    公开(公告)日：2019-07-04

    申请号：US16234625

    申请日：2018-12-28

    申请人： TSINGHUA UNIVERSITY ,  NUCTECH COMPANY LIMITED

    发明人： Kejun KANG ,  Jianmin LI ,  Xiulin NI ,  Yulan LI ,  Yuanjing LI ,  Zhiqiang CHEN ,  Li ZHANG ,  Liang LI ,  Xiang ZOU ,  Weifeng YU ,  Hejun ZHOU ,  Chunguang ZONG

    IPC分类号： G01N23/046

    CPC分类号： G01N23/046 ,  G01N2223/33 ,  G01V5/005

    摘要： The present disclosure relates to the technical field of CT detection, and in particular to a CT inspection system and a CT imaging method. The CT inspection system provided by the present disclosure comprises a radioactive source device, a detection device, a rotation monitoring device and an imaging device, wherein the detection device obtains detection data at a frequency that is N times a beam emitting frequency of the radioactive source device; the rotation monitoring device detects a rotation angle of the detection device and transmits a signal to the imaging device each time the detection device rotates by a preset angle; the imaging device determines a rotational position of the detection device each time the radioactive source device emits a beam according to the signal transmitted by the rotation monitoring device and the detection data of the detection device.

    X-RAY DETECTION METHOD AND X-RAY DETECTOR
    5.
    发明申请
    X-RAY DETECTION METHOD AND X-RAY DETECTOR 审中-公开

    公开(公告)号：US20190086562A1

    公开(公告)日：2019-03-21

    申请号：US16175796

    申请日：2018-10-30

    申请人： Tsinghua University ,  Nuctech Company Limited

    发明人： Yuxiang XING ,  Xiaoyue GUO ,  Zhi DENG ,  Le SHEN ,  Li ZHANG ,  Zhiqiang CHEN ,  Liang LI

    IPC分类号： G01T1/36 ,  G01N23/04

    摘要： An X-ray detection method and an X-ray detector are provided. The X-ray detection method according to embodiments of the present disclosure includes: dividing an energy range of photons emitted by an X-ray source into a number N of energy windows, where N is an integer greater than 0; obtaining a weighting factor for each of the number N of energy windows based on linear attenuation coefficients of a substance of interest and a background substance of an imaging target; obtaining a weighting factor matrix for M output channels of an X-ray detector based on the weighting factor for each of the number N of energy windows, where M is an integer greater than 0; and obtaining output results of the M output channels based on the weighting factor matrix and numbers of photons having an energy range falling into individual energy windows of the number N of energy windows.

    RAY TRANSMISSION AND FLUORESCENCE CT IMAGING SYSTEM AND METHOD
    6.
    发明申请
    RAY TRANSMISSION AND FLUORESCENCE CT IMAGING SYSTEM AND METHOD 审中-公开

    公开(公告)号：US20190056338A1

    公开(公告)日：2019-02-21

    申请号：US16045243

    申请日：2018-07-25

    申请人： Tsinghua University ,  NUCTECH COMPANY LIMITED

    发明人： Liang LI ,  Zhiqiang CHEN ,  Li ZHANG ,  Ziran ZHAO ,  Yuxiang XING ,  Siyuan ZHANG

    IPC分类号： G01N23/2206 ,  G01N23/046 ,  G01N23/223 ,  A61B6/03 ,  A61B6/06 ,  A61B6/10 ,  A61B6/00

    摘要： The present disclosure discloses a ray transmission and fluorescence CT imaging system and method. The system comprises: a ray source configured to emit a beam of rays; a rotational scanning device configured to perform rotational CT scanning on an object to be inspected; a transmission CT detector configured to receive the beam of rays which has passed through the object; a fluorescence CT detector configured to receive fluorescent photons excited by irradiation of the beam of rays on the object; a data acquisition unit configured to acquire a transmission data signal and a fluorescence data signal respectively; and a control and data processing unit configured to control the ray source to emit the beam of rays, control the rotational scanning device to perform the rotational CT scanning, and obtain a transmission CT image and a fluorescence CT image simultaneously based on the transmission data signal and the fluorescence data signal.

    LOW-ANGLE SELF-SWINGING, LARGE-SCALE MULTI-SLICE SPIRAL COMPUTED TOMOGRAPHY APPARATUS AND INSPECTION METHOD
    7.
    发明申请
    LOW-ANGLE SELF-SWINGING, LARGE-SCALE MULTI-SLICE SPIRAL COMPUTED TOMOGRAPHY APPARATUS AND INSPECTION METHOD 审中-公开
    低角度自动扫描，大规模多层螺旋计算机图像检测和检测方法

    公开(公告)号：US20160084775A1

    公开(公告)日：2016-03-24

    申请号：US14837205

    申请日：2015-08-27

    申请人： Tsinghua University ,  Nuctech Company Limited

    发明人： Kejun KANG ,  Zhiqiang CHEN ,  Yuanjing LI ,  Li ZHANG ,  Ziran ZHAO ,  Yaohong LIU ,  Jianping GU ,  Liang LI ,  Yuxiang XING

    IPC分类号： G01N23/04

    CPC分类号： G01N23/046 ,  G01V5/005

    摘要： The present disclosure provides a low-angle self-swinging type computed tomography (CT) apparatus, which is provided with an X-ray accelerator and a plurality of rows of detectors and is configured to include a slip ring, such that the slip ring with the accelerator and the detectors thereon is capable of performing a single-pendulum reciprocating movement while an objected to be inspected passes through the slip ring, a three dimension CT image of the object is displayed, thereby achieving accurate inspection for large-scale objects, such as van containers.

    摘要翻译： 本公开提供了一种低角度自摆式计算机断层摄影（CT）装置，其设置有X射线加速器和多排检测器，并且构造成包括滑环，使得滑环具有 加速器和其上的检测器能够在被检查对象通过滑环的同时执行单摆往复运动，显示对象的三维CT图像，从而实现对大型物体的精确检查，例如 作为集装箱。

    X-RAY DUAL-ENERGY CT RECONSTRUCTION METHOD
    8.
    发明申请
    X-RAY DUAL-ENERGY CT RECONSTRUCTION METHOD 有权
    X射线双能CT重建方法

    公开(公告)号：US20150030225A1

    公开(公告)日：2015-01-29

    申请号：US14337209

    申请日：2014-07-22

    申请人： TSINGHUA UNIVERSITY ,  NUCTECH COMPANY LIMITED

    发明人： Yuxiang XING ,  Le SHEN ,  Li ZHANG ,  Zhiqiang CHEN ,  Liang LI

    IPC分类号： G06T11/00 ,  G06T5/00 ,  G01N23/04

    CPC分类号： G01N23/046 ,  G06T11/006 ,  G06T2207/10081 ,  G06T2207/20182 ,  G06T2207/30004 ,  G06T2211/408 ,  G06T2211/424

    摘要： The present disclosure relates to a self-prior information based X-ray dual-energy CT reconstruction method, which can utilize information inherent in data to provide a prior model, thereby obtaining a reconstructed image with a high quality. The X-ray dual-energy CT reconstruction method according to the present disclosure comprises: (a) rating an energy spectrum and establishing a dual-energy lookup table; (b) collecting high-energy data pH and low-energy data pL of a dual-energy CT imaging system using a detector of the dual-energy CT imaging system; (c) obtaining projection images R1 and R2 of scaled images r1 and r2 according to the obtained high-energy data pH and low-energy data pL; (d) reconstructing the scaled image r2 using a first piece-wise smooth constraint condition and thereby obtaining an electron density image; and (e) reconstructing the scaled image r1 using a second piece-wise smooth constraint condition and thereby obtaining an equivalent atomic number image. In the present disclosure, the noise in the dual-energy reconstructed image can be effectively prohibited while keeping the resolution by effectively using information inherent in data.

    摘要翻译： 本公开涉及一种基于自我先验信息的X射线双能CT重建方法，其可以利用数据中固有的信息来提供先验模型，从而获得具有高质量的重建图像。 根据本公开的X射线双能CT重建方法包括：（a）评估能谱并建立双能量查找表; （b）使用双能CT成像系统的检测器收集双能CT成像系统的高能数据pH和低能量数据pL; （c）根据获得的高能量数据pH和低能量数据pL，获得缩放图像r1和r2的投影图像R1和R2; （d）使用第一分段平滑约束条件重建缩放图像r2，从而获得电子密度图像; 和（e）使用第二分段平滑约束条件重建缩放图像r1，从而获得等效的原子序数图像。 在本公开中，可以有效地禁止双能量重构图像中的噪声，同时通过有效地使用数据中固有的信息来保持分辨率。

    HUMAN BODY SECURITY INSPECTION APPARATUS AND METHOD
    9.
    发明申请
    HUMAN BODY SECURITY INSPECTION APPARATUS AND METHOD 审中-公开
    人体安全检查装置及方法

    公开(公告)号：US20140184773A1

    公开(公告)日：2014-07-03

    申请号：US14135922

    申请日：2013-12-20

    申请人： Tsinghua University ,  Nuctech Company Limited

    发明人： Zhiqiang CHEN ,  Ziran ZHAO ,  Wanlong WU ,  Yuanjing LI ,  Zongjun SHEN ,  Li ZHANG ,  Yinong LIU ,  Jin CUI ,  Yingkang JIN ,  Liang LI ,  Yuxiang XING ,  Yongshun XIAO

    IPC分类号： G06K9/00 ,  G06K9/20 ,  H04N7/18

    CPC分类号： G06K9/00375 ,  G01V3/12 ,  G01V8/005 ,  G06K9/209 ,  H04N7/18

    摘要： The present invention discloses a human body security inspection apparatus and a corresponding method. Specifically, the apparatus comprises: a human body security inspection device (1), configured to scan the human to be inspected (2) in order to inspect whether the human to be inspected (2) carries prohibited articles; a KINECT sensor (3), configured to real-timely acquire information about the human to be inspected (2) so that the human body security inspection device (1) is capable of real-timely acquiring the information of the human to be inspected (2) by means of the KINECT sensor (3), so as to determine whether the information conforms to requirements of the human body security inspection device (1); and a data processing device (4), configured to communicate with the human body security inspection device (1) and the KINECT sensor (3), in order to real-timely analyse and process the information of the human to be inspected (2).

    摘要翻译： 本发明公开了一种人体安全检查装置和相应的方法。 具体地说，该装置包括：人体安全检查装置（1），被配置为扫描被检查的人（2），以检查被检查人（2）是否携带被禁止的物品; 一种KINECT传感器（3），被配置为实时获取关于待检查人的信息（2），使得人体安全检查装置（1）能够实时获取被检查人的信息（ 2）通过KINECT传感器（3），以确定信息是否符合人体安全检查装置（1）的要求; 以及数据处理装置（4），被配置为与人体安全检查装置（1）和KINECT传感器（3）进行通信，以便实时地分析和处理待检查的人的信息（2） 。