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公开(公告)号：US20240361487A1
公开(公告)日：2024-10-31
申请号：US18690097
申请日：2022-07-22
Applicant: NUCTECH COMPANY LIMITED , TSINGHUA UNIVERSITY
Inventor： Li ZHANG , Yunda SUN , Xin JIN , Wuyang LIANG , Ming CHANG , Le SHEN
IPC: G01V5/22
CPC classification number: G01V5/22
Abstract: A radiation protection arrangement, including: a housing, the housing including a first port and a second port; and a tray, the tray having an accommodation space. The tray is allowed to pass through a channel within the housing. The tray has a first end wall, a second end wall, and a bottom portion connected between the first end wall and the second end wall. A shape of the first end wall and/or a shape of the second end wall are/is configured to fit with an inner wall of the housing, so as to block a radiation from leaving the channel from the accommodation space through the second port or the first port. Further provided is a security inspection device, including the radiation protection arrangement.
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公开(公告)号：US20240288385A1
公开(公告)日：2024-08-29
申请号：US18575224
申请日：2022-07-07
Applicant: Nuctech Company Limited , Tsinghua University
Inventor： Li ZHANG , Zhiqiang CHEN , Qingping HUANG , Xin JIN , Hui DING , Yong ZHOU , Bintao WEI , Zhenhua ZHAO
IPC: G01N23/04
CPC classification number: G01N23/04 , G01N2223/20 , G01N2223/308 , G01N2223/321
Abstract: A ray scanning apparatus for a luggage conveying system. The apparatus includes: a conveying device for conveying an object under inspection to pass through a scanning area of the ray scanning apparatus; and a plurality of scanning beam planes disposed on a plurality of scanning planes arranging in a conveying direction of the object under inspection, each scanning beam plane includes a ray source module and a detector assembly which are arranged opposite to each other, and the ray source module includes a plurality of ray source points for emitting ray beams, wherein the ray source modules of the plurality of scanning beam planes are arranged on lower, left, and right sides of the scanning area respectively.
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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.
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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
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。
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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
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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Patent Agency Ranking
公开(公告)号：US20240310304A1
公开(公告)日：2024-09-19
申请号：US18574578
申请日：2022-07-06
Applicant: TSINGHUA UNIVERSITY , NUCTECH COMPANY LIMITED
Inventor： Zhiqiang CHEN , Li ZHANG , Qingping HUANG , Yong ZHOU , Hui DING , Xin JIN , Chao JI
IPC: G01N23/046
CPC classification number: G01N23/046 , G01N2223/1016 , G01N2223/419 , G01N2223/643
Abstract: An inspection system and method, the system includes: a ray source rotatable between at least two scanning positions around a rotation axis, a rotation angle of the ray source between two adjacent scanning positions being greater than an angle of adjacent target spots of the ray source relative to the rotation axis; a detector assembly; and a conveying device for carrying an object. The ray source and the detector assembly are movable in a traveling direction relative to the conveying device so that the object enters an inspection region. When the ray source is at one of the scanning positions, the ray source and the detector assembly move in the traveling direction and the ray source emits X-rays; and when the ray source and the detector assembly move a predetermined distance in the traveling direction, the ray source rotates around the rotation axis to another one of the scanning positions.
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公开(公告)号：US20240142658A1
公开(公告)日：2024-05-02
申请号：US18574633
申请日：2022-07-06
Applicant: Nuctech Company Limited , Tsinghua University
Inventor： Zhiqiang CHEN , Li ZHANG , Qingping HUANG , Yong ZHOU , Hui DING , Xin JIN , Chao JI
IPC: G01V5/226 , G01N23/046
CPC classification number: G01V5/226 , G01N23/046
Abstract: An inspection system, including: at least one ray source rotatable between at least two scanning positions around a rotation axis, and a rotation angle of at least one ray source between two adjacent scanning positions is greater than an angle of adjacent target spots of each ray source relative to the rotation axis; a detector assembly, and a conveying device configured to carry an object to be inspected. At least one ray source and the detector assembly are movable in a traveling direction relative to the conveying device, so that the object to be inspected may enter an inspection region. When at least one ray source is located at one scanning positions, at least one ray source and the detector assembly move in the traveling direction relative to the conveying device and at least one ray source emits X-rays; after moving a predetermined distance, at least one ray source rotates around the rotation axis to another scanning position.
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公开(公告)号：US20230124325A1
公开(公告)日：2023-04-20
申请号：US17967039
申请日：2022-10-17
Applicant: TSINGHUA UNIVERSITY , Nuctech Company Limited
Inventor： Zhiqiang CHEN , Li ZHANG , Xin JIN , Hongkai YANG , Xiaofei XU , Zhenhua ZHAO , Siyuan ZHANG , Changyu CHEN
Abstract: The present disclosure relates to an imaging system and method for radiographic inspection. The imaging system for radiographic inspection includes an inspection area including an imaging area; a first ray source assembly, all the first targets of which are arranged in a first ray source plane; a first detector assembly, the plurality of first detector units of which are arranged in a detector plane, the detector plane and the first ray source plane are spaced apart from each other in a travelling direction of the object under inspection with a predetermined distance; and a ray source control device, configured such that when the region of interest of the object under inspection is at least partially located in the imaging area, the first ray source assembly emits X-rays simultaneously from at least two first targets to the imaging area at the same time.
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公开(公告)号：US20190025447A1
公开(公告)日：2019-01-24
申请号：US16137547
申请日：2018-09-21
Applicant: Tsinghua University , Nuctech Company Limited
Inventor： Li ZHANG , Zhiqiang CHEN , Sen WANG , Xiaofei XU , Yuanjing LI , Xin JIN
Abstract: The present disclosure relates to a data processing method and device. The data processing method comprises steps of: performing detector response calibration based on a detector response obtained by an incidence of rays with known energy into a detector to obtain a detector response model; obtaining a photon counting model of the detector between incident energy spectrum data of the detector and detected energy spectrum data of the detector based on the detector response model; and performing a deconvolution operation on counts of photons in respective energy regions in the detected energy spectrum data of the detector based on the photon counting model of the detector, to obtain real counts of photons in respective energy regions in the incident energy spectrum data of the detector.
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公开(公告)号：US20170176352A1
公开(公告)日：2017-06-22
申请号：US15262894
申请日：2016-09-12
Applicant: TSINGHUA UNIVERSITY , NUCTECH COMPANY LIMITED
Inventor： Zhiqiang CHEN , Li ZHANG , Tianyi YANG DAI , Ji ZHAO , Xin JIN , Ming CHANG
IPC: G01N23/04 , G01N23/207 , G21K1/02 , G01N23/083
CPC classification number: G01N23/046 , G01N23/083 , G01N23/20083 , G01N23/207 , G01N2223/045 , G01N2223/056 , G01N2223/316 , G01N2223/643 , G01V5/0025 , G01V5/005 , G21K1/02
Abstract: The present disclosure relates to detection systems and methods. One illustrative detection system may include a distributed radiation source having a plurality of radiation source focus points, which irradiate an object under detection, wherein the plurality of radiation source focus points are divided into a certain number of groups, and a primary collimator that limits rays of each of the radiation source focus points such that the rays emit into an XRD detection device. An XRD detection device may include a plurality of XRD detectors that are divided into the same number of groups as the radiation source focus points, wherein XRD detectors in a same group are arranged to be separated by XRD detectors in other groups, and rays of each of the radiation source focus points are received by XRD detectors having the same group number as the group number of the radiation source focus point.
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