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    RAY SCANNING APPARATUS
    2.
    发明公开
    RAY SCANNING APPARATUS 审中-公开

    公开(公告)号：US20240248048A1

    公开(公告)日：2024-07-25

    申请号：US18575794

    申请日：2022-07-07

    Applicant: Nuctech Company Limited ,  Tsinghua University

    Inventor： Zhiqiang CHEN ,  Li ZHANG ,  Qingping HUANG ,  Yong ZHOU ,  Zhenhua ZHAO ,  Hui DING ,  Xin JIN ,  Chao JI

    IPC: G01N23/046

    CPC classification number: G01N23/046 ,  G01N2223/308 ,  G01N2223/3305 ,  G01N2223/3308 ,  G01N2223/401 ,  G01N2223/419 ,  G01N2223/5015

    Abstract: A ray scanning apparatus, including: a conveying device; a ray source assembly including a plurality of ray source modules arranged around the scanning area in a non-enclosed structure opened on one side of the scanning area; and a detector assembly including a plurality of detector sets arranged around the scanning area in a non-enclosed structure opened on one side of the scanning area, where the opening of the non-enclosed structure of the ray source assembly is opposite to the opening of the non-enclosed structure of the detector assembly, the plurality of detector sets are fixed in a same plane perpendicular to the conveying direction of the object under inspection, and the plurality of ray source modules of the ray source assembly are arranged in a plurality of different planes perpendicular to the conveying direction of the object under inspection.

    GRATING AND RADIATION IMAGING DEVICE
    3.
    发明申请
    GRATING AND RADIATION IMAGING DEVICE 审中-公开

    公开(公告)号：US20180075938A1

    公开(公告)日：2018-03-15

    申请号：US15802473

    申请日：2017-11-03

    Applicant: Tsinghua University ,  Nuctech Company Limited

    Inventor： Li ZHANG ,  Mingzhi HONG ,  Qingping HUANG ,  Le SHEN

    IPC: G21K1/06 ,  G02B5/18

    CPC classification number: G21K1/06 ,  G02B5/1838 ,  G21K1/025 ,  G21K2201/067 ,  G21K2207/005

    Abstract: The disclosure relates to a grating and a radiation imaging device. The grating comprises a plurality of stacked grating elements. The grating elements are stacked to form a grid. The grating element comprises a first sheet and a second sheet having two parallel planes. The second sheet is stacked at the first sheet in a length direction of the first sheet. The first sheet is almost impervious to radiation. The present disclosure stacks the sheets having different specifications together to form the grating with uniform grating slits, such that there is no limitation on the thickness of the grating and the grating can be used along with high-energy radiations.

    DETECTOR DEVICE, DUAL ENERGY CT SYSTEM AND DETECTION METHOD USING THE SYSTEM
    4.
    发明申请
    DETECTOR DEVICE, DUAL ENERGY CT SYSTEM AND DETECTION METHOD USING THE SYSTEM 有权
    检测器装置，双能量CT系统和使用该系统的检测方法

    公开(公告)号：US20150378047A1

    公开(公告)日：2015-12-31

    申请号：US14748407

    申请日：2015-06-24

    Applicant: Tsinghua University ,  Nuctech Company Limited

    Inventor： Zhiqiang CHEN ,  Li ZHANG ,  Xin JIN ,  Qingping HUANG ,  Le SHEN ,  Yunda SUN

    IPC: G01V5/00 ,  G01T7/08

    CPC classification number: G01V5/0041 ,  A61B6/4266 ,  G01T1/202 ,  G01T1/362 ,  G01T7/08 ,  G01V5/005

    Abstract: The present disclosure discloses a detector device comprising a plurality of detector assemblies. Each detector assembly comprises at least one detection crystal units having a first energy response and those having a second energy response, which are both arranged along a first direction at intervals, each detection crystal unit having a first/second energy response including at least one detection crystals having a first/second energy response arranged along a second direction. The at least one detection crystal units having a first energy response and the at least one detection crystal units having a second energy response are, at least partially, alternatively arranged along the first direction when viewed from an incidence direction of the X-ray. The present disclosure also discloses a dual energy CT system having the detector device and a CT detection method using this system.

    Abstract translation: 本公开公开了一种包括多个检测器组件的检测器装置。 每个检测器组件包括具有第一能量响应的至少一个检测晶体单元和具有第二能量响应的检测晶体单元，它们都沿着第一方向间隔排列，每个检测晶体单元具有包括至少一个检测的第一/第二能量响应 具有沿第二方向布置的第一/第二能量响应的晶体。 当从X射线的入射方向观察时，具有第一能量响应的至少一个检测晶体单元和具有第二能量响应的至少一个检测晶体单元至少部分地沿第一方向布置。 本公开还公开了一种具有检测器装置和使用该系统的CT检测方法的双能CT系统。

    INSPECTION SYSTEM AND INSPECTION METHOD
    5.
    发明申请
    INSPECTION SYSTEM AND INSPECTION METHOD 有权

    公开(公告)号：US20250046012A1

    公开(公告)日：2025-02-06

    申请号：US18576857

    申请日：2022-07-06

    Applicant: NUCTECH COMPANY LIMITED ,  Tsinghua University

    Inventor： Li ZHANG ,  Zhiqiang CHEN ,  Qingping HUANG ,  Hui DING ,  Yong ZHOU ,  Xin JIN ,  Liming YAO

    IPC: G06T17/00 ,  G01V5/226

    Abstract: An inspection system and method, the inspection system includes: a carrying device, at least one ray source and a detector assembly. The ray source and the detector assembly are lifted or lowered along a central axis of the carrying device relative to the carrying device. When viewed along the central axis, the ray source is translatable between scanning positions relative to the carrying device. When the ray source is at one of the scanning positions the ray source and the detector assembly are lifted or lowered relative to the carrying device along the central axis, and the ray source emits X-rays; and when the ray source and the detector assembly are lifted or lowered a predetermined distance the ray source translates to another scanning position. The inspection system further reconstructs a three-dimensional scanning image of the object to be inspected based on detection data of the detector assembly.

    MULTI-SPECTRAL STATIC CT APPARATUSES
    8.
    发明申请
    MULTI-SPECTRAL STATIC CT APPARATUSES 有权
    多光谱静态CT设备

    公开(公告)号：US20150185357A1

    公开(公告)日：2015-07-02

    申请号：US14577069

    申请日：2014-12-19

    Applicant: Tsinghua University ,  Nuctech Company Limited

    Inventor： Zhiqiang CHEN ,  Li ZHANG ,  Qingping HUANG ,  Yunda SUN ,  Xin JIN ,  Tao YANG ,  Le SHEN ,  Ji ZHAO

    IPC: G01V5/00 ,  G01N23/04

    CPC classification number: G01V5/0041 ,  G01N23/046 ,  G01T1/2985 ,  G01V5/005

    Abstract: Multi-spectral static CT apparatuses are disclosed. The apparatus includes a ray source in a form of multiple distributed spots, multiple columns of detectors, a data acquisition device, an article carrying and control device, and a multi-spectral projection data processing device. An object of the present disclosure is to combine static CT scanning technology with multi-spectral analysis technology. It has an advantage of a static CT system, such as high scanning speed, simple mechanic structure, and/or cost reduction due to omission of slip ring. It also can perform identification of material in an article, and can be widely applied in occasions such as safety inspection, and smuggling suppression at customs.

    Abstract translation: 公开了多光谱静态CT装置。 该装置包括多个分布点的形式的射线源，多列检测器，数据采集装置，物品携带和控制装置以及多光谱投影数据处理装置。 本公开的目的是将静态CT扫描技术与多光谱分析技术相结合。 它具有静电CT系统的优点，如扫描速度快，机械结构简单，和/或由于省略滑环而降低成本。 也可以在物品中进行材料鉴定，并可广泛应用于安全检查，海关走私等场合。

    3-DIMENSIONAL MODEL CREATION METHODS AND APPARATUSES
    9.
    发明申请
    3-DIMENSIONAL MODEL CREATION METHODS AND APPARATUSES 有权
    三维建模方法和设备

    公开(公告)号：US20140185742A1

    公开(公告)日：2014-07-03

    申请号：US14138447

    申请日：2013-12-23

    Applicant: Nuctech Company Limited ,  Tsinghua University

    Inventor： Zhiqiang CHEN ,  Li ZHANG ,  Ziran ZHAO ,  Qiang LI ,  Jianping GU ,  Qingping HUANG

    IPC: G01V5/00 ,  G06T17/00

    CPC classification number: G01V5/005 ,  G06K9/00214 ,  G06K2209/09 ,  G06T7/11 ,  G06T7/187 ,  G06T17/00 ,  G06T2207/10081 ,  G06T2207/30112

    Abstract: Disclosed are methods and apparatuses for creating a 3-Dimensional model for objects in an inspected luggage in a CT system. The method includes acquiring slice data of the luggage with the CT system; interpolating the slice data to generate 3D volume data of the luggage; performing unsupervised segmentation on the 3D volume data of the luggage to obtain a plurality of segmental regions; performing isosurface extraction on the plurality of segmental regions to obtain corresponding isosurfaces; and performing 3D surface segmentation on the isosurfaces to form a 3D model for the objects in the luggage. The above solutions can create a 3D model for objects in the inspected luggage in a relatively accurate manner, and thus provide better basis for subsequent shape feature extraction and security inspection, and reduce omission factor.

    Abstract translation: 公开了用于在CT系统中检查的行李中的物体创建三维模型的方法和装置。 该方法包括采用CT系统获取行李的切片数据; 内插切片数据以生成行李的3D体积数据; 对行李的3D体积数据执行无监督分割以获得多个分段区域; 在多个分段区域进行等值面提取以获得相应的等值面; 并在等面上执行3D表面分割，以形成行李中物体的3D模型。 上述解决方案可以以相对准确的方式为被检查行李中的对象创建3D模型，从而为随后的形状特征提取和安全检查提供更好的依据，并减少遗漏因素。

    RAY SCANNING APPARATUS
    10.
    发明申请
    RAY SCANNING APPARATUS 有权

    公开(公告)号：US20240369499A1

    公开(公告)日：2024-11-07

    申请号：US18575789

    申请日：2022-07-01

    Applicant: Nuctech Company Limited ,  Tsinghua University

    Inventor： Zhiqiang CHEN ,  Li ZHANG ,  Qingping HUANG ,  Xin JIN ,  Hui DING ,  Yong ZHOU ,  Baoyauan HU ,  Zhenhua ZHAO

    IPC: G01N23/04 ,  G01N23/06

    Abstract: A ray scanning apparatus, including: a conveying device for conveying an object under inspection to pass through a scanning area; a ray source assembly including a plurality of ray source modules arranged around the scanning area on an upper side of the conveying device and fixed in a plane perpendicular to a conveying direction of the object under inspection; and a detector assembly including a plurality of detector sets fixed in a plane perpendicular to the conveying direction of the object under inspection; the detector assembly is located between the ray source assembly and the scanning area in a direction perpendicular to the conveying direction of the object under inspection, the ray source assembly and the detector assembly are arranged to overlap at least partially in the conveying direction of the object under inspection, and the plurality of ray source modules are mounted and detached independently of each other.

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