公开(公告)号：EP4393406A1

公开(公告)日：2024-07-03

申请号：EP22880277.3

申请日：2022-10-10

申请人： Tsinghua University ,  Nuctech Company Limited

发明人： CHEN, Zhiqiang ,  ZHANG, Li ,  JIN, Xin ,  YANG, Hongkai ,  XU, Xiaofei ,  ZHAO, Zhenhua ,  ZHANG, Siyuan ,  CHEN, Changyu

IPC分类号： A61B6/03

CPC分类号： A61B6/032 ,  A61B6/4014 ,  A61B6/54 ,  G06V2201/0320220101 ,  G06V2201/1220220101

摘要： 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 target spots 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 target spots to the imaging area at the same time, wherein among the at least two first target spots of the first ray source assembly that simultaneously emit X-rays to the imaging area, a ray emission range of each first target spot can cover the imaging area, and the first detector crystals corresponding to the ray emission ranges of any two first target spots do not coincide with each other.

公开(公告)号：EP4369060A1

公开(公告)日：2024-05-15

申请号：EP22837024.3

申请日：2022-07-07

申请人： Nuctech Company Limited ,  Tsinghua University

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

IPC分类号： G01V5/00 ,  G01N23/046

摘要： Embodiments of the present application provide a ray scanning device, comprising: a conveying apparatus, which transports an object to be detected through a scanning region of the ray scanning device; a ray source, which comprises a plurality of ray source modules, each ray source module comprising at least one ray source point that emits ray beams; and a detector, which is used for detecting rays transmitted through the object during scanning and which comprises a plurality of detector groups.

公开(公告)号：EP4368977A1

公开(公告)日：2024-05-15

申请号：EP22836963.3

申请日：2022-07-06

申请人： Nuctech Company Limited ,  Tsinghua University

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

IPC分类号： G01N23/04

CPC分类号： G01V5/00 ,  G01N23/046 ,  G01N23/04

摘要： An inspection system, including: a carrying device (300); at least one ray source (100) and a detector assembly (200). The at least one ray source (100) is rotatable between a plurality of scanning positions around a rotation axis (AX) relative to the carrying device (300). The at least one ray source (100) and the detector assembly (200) may be lifted or lowered along the rotation axis (AX) relative to the carrying device (300). When the at least one ray source (100) is located at one of scanning positions relative to the carrying device (300), the at least one ray source (100) and the detector assembly (200) are lifted or lowered along the rotation axis (AX) relative to the carrying device (300) and the at least one ray source (100) emits X-rays. After the at least one ray source (100) and the detector assembly (200) are lifted or lowered a predetermined distance relative to the carrying device (300), the at least one ray source (100) rotates around the rotation axis (AX) relative to the carrying device (300) to another one of scanning positions. The inspection system further reconstructs a three-dimensional scanning image of the object (10) to be inspected based on detection data of the detector assembly (200).

公开(公告)号：EP3242127B1

公开(公告)日：2018-11-28

申请号：EP17154154.3

申请日：2017-02-01

申请人： Nuctech Company Limited

发明人： CHEN, Zhiqiang ,  ZHANG, Li ,  YANG DAI, Tianyi ,  XING, Yuxiang ,  LI, Liang ,  HUANG, Qingping ,  SUN, Yunda ,  JIN, Xin ,  CHANG, Ming ,  SHEN, Le

IPC分类号： G01N23/20 ,  G01N23/046 ,  G01N23/20091

CPC分类号： G01N23/20083 ,  G01N23/046 ,  G01N23/20091 ,  G01N2223/637

摘要： A method and system for liquid detection are disclosed. The method for liquid detection according to embodiments of the invention includes: performing CT scanning and XRD scanning on a liquid substance simultaneously to obtain CT data and XRD energy spectrum data of the liquid substance (S102); extracting a molecular interference function of the liquid substance based on the CT data and the XRD energy spectrum data of the liquid substance (S104); and identifying the liquid substance by using the molecular interference function and the CT data of the liquid substance (S106). The method and system for liquid detection according to embodiments of the invention may obtain the molecular interference function with a higher signal-to-noise ratio and a larger effective range of the liquid substance and thus identify a wider range of liquid substances.

公开(公告)号：EP2749873B1

公开(公告)日：2018-02-21

申请号：EP13840115.3

申请日：2013-07-15

申请人： Nuctech Company Limited ,  Tsinghua University

发明人： ZHANG, Li ,  CHEN, Zhiqiang ,  HUANG, Qingping ,  SUN, Yunda ,  JIN, Xin ,  SHEN, Le ,  XING, Yuxiang ,  TANG, Hu ,  LI, Yuanjing ,  HONG, Mingzhi ,  LIANG, Jinning ,  REN, Qianlu ,  LI, Liang ,  DING, Hui ,  CHANG, Ming

IPC分类号： G01N23/04 ,  G01T1/20

CPC分类号： A61B6/482 ,  A61B6/0457 ,  A61B6/4241 ,  A61B6/542 ,  G01N23/046 ,  G01N2223/419 ,  G01N2223/643 ,  G01T1/242 ,  G01V5/0041 ,  H01L27/14601 ,  H01L27/14634 ,  H01L27/14658 ,  H01L27/14676 ,  H01L27/14806 ,  H01L27/14812

摘要： A detection device for a CT system comprises a low-energy detector assembly; and a high-energy detector assembly disposed under the low-energy detector assembly. The high-energy detector assembly comprises: a plurality of rows of high-energy detectors arranged at predetermined intervals. With the detection device, detectors and data acquisition units are greatly reduced. A high-resolution three-dimensional CT image is acquired while high-accuracy hazardous article alarm is achieved. The cost of manufacture of the system is greatly decreased while high system performance is ensured.

公开(公告)号：EP4382896A1

公开(公告)日：2024-06-12

申请号：EP22836876.7

申请日：2022-07-04

申请人： Nuctech Company Limited ,  Tsinghua University

发明人： ZHANG, Li ,  SUN, Yunda ,  JIN, Xin ,  LIANG, Wuyang ,  ZHAO, Zhenhua ,  HU, Kemin

IPC分类号： G01N23/04 ,  A61B6/03 ,  G01T7/00

CPC分类号： G01N23/04 ,  G01T7/00 ,  A61B6/03

摘要： A digital radiography system and a digital radiography method. The digital radiography system includes: detectors (L) mounted on a plurality of detector arm supports (L1, L2) formed in a first plane (P); and a ray source (S) that is non-coplanar with the first plane (P). The digital radiography system further includes an image processing apparatus (10).

公开(公告)号：EP4369059A1

公开(公告)日：2024-05-15

申请号：EP22837001.1

申请日：2022-07-07

申请人： Nuctech Company Limited ,  Tsinghua University

发明人： ZHANG, Li ,  CHEN, Zhiqiang ,  HUANG, Qingping ,  JIN, Xin ,  DING, Hui ,  ZHOU, Yong ,  WEI, Bintao ,  ZHAO, Zhenhua

IPC分类号： G01V5/00 ,  G01N23/04

摘要： A ray scanning device for a luggage conveying system. The device comprises a transmission apparatus, which transports an object under inspection to pass through a scanning region of the ray scanning device; and a plurality of scanning stages, which are respectively arranged on a plurality of scanning planes in the conveying direction of the object under inspection, wherein each scanning stage comprises a ray source module (10) and a detector group (30), which are arranged opposite one another, the ray source module (10) comprises a plurality of source points for emitting ray beams, and the ray source modules (10) of the plurality of scanning stages are respectively arranged on a lower portion, a left portion and a right portion of the scanning region.

公开(公告)号：EP4369058A1

公开(公告)日：2024-05-15

申请号：EP22836959.1

申请日：2022-07-06

申请人： Nuctech Company Limited ,  Tsinghua University

发明人： CHEN, Zhiqiang ,  ZHANG, Li ,  HUANG, Qingping ,  ZHOU, Yong ,  DING, Hui ,  JIN, Xin ,  JI, Chao

IPC分类号： G01V5/00 ,  G01N23/046

摘要： An inspection system, including: at least one ray source (100) 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 (100) relative to the rotation axis; a detector assembly (200), and a conveying device (300) configured to carry an object to be inspected. At least one ray source (100) and the detector assembly (200) are movable in a traveling direction relative to the conveying device (300), so that the object (10) to be inspected may enter an inspection region (30). When at least one ray source (100) is located at one of scanning positions, at least one ray source (100) and the detector assembly (200) move in the traveling direction relative to the conveying device (300) and at least one ray source (100) emits X-rays; after at least one ray source (100) and the detector assembly (200) move a predetermined distance in the traveling direction relative to the conveying device (300), at least one ray source (100) rotates around the rotation axis to another of scanning positions.

公开(公告)号：EP4368978A1

公开(公告)日：2024-05-15

申请号：EP22836964.1

申请日：2022-07-06

申请人： Nuctech Company Limited ,  Tsinghua University

发明人： CHEN, Zhiqiang ,  ZHANG, Li ,  HUANG, Qingping ,  ZHOU, Yong ,  DING, Hui ,  JIN, Xin ,  JI, Chao

IPC分类号： G01N23/04

摘要： An inspection system, including: a ray source (100); a detector assembly (200); and a conveying device (300) for carrying an aviation pallet cargo to be inspected. The ray source (100) and the detector assembly (200) are movable in a traveling direction relative to the conveying device (300) so that the aviation pallet cargo to be inspected enters an inspection region (30), and when viewed along a central axis of the inspection region (30), the ray source (100) is translatable between a plurality of scanning positions, and a translation distance of the ray source (100) between two adjacent scanning positions is greater than a spacing between adjacent target spots of the ray source (100), and the traveling direction is parallel to the central axis. When the ray source (100) is located at one of the plurality of scanning positions, the ray source (100) and the detector assembly (200) move in the traveling direction relative to the conveying device (300) and the ray source (100) emits X-rays; and when the ray source (100) and the detector assembly (200) move a predetermined distance in the traveling direction relative to the conveying device (300), the ray source (100) translates to another one of the plurality of scanning positions.

公开(公告)号：EP4170328A1

公开(公告)日：2023-04-26

申请号：EP21828334.9

申请日：2021-06-10

申请人： Tsinghua University ,  Nuctech Company Limited

发明人： CHEN, Zhiqiang ,  ZHANG, Jinyu ,  TANG, Huaping ,  ZHAO, Kun ,  JIN, Xin ,  LI, Dongmao ,  ZHANG, Tong ,  LI, Ke ,  JIN, Zengxue ,  WANG, Kai ,  ZHANG, Guoqiang ,  ZHU, Weitao ,  LIN, Weizhi ,  DING, Hui ,  HAN, Xilin ,  ZHANG, Jing

IPC分类号： G01N23/04 ,  G01V5/00

摘要： A converged system and method for a radiation imaging and a radioactive material monitoring of a luggage or package object (105, 205, 305) are provided. The converged system includes: a radiation imaging subsystem (10) configured to operate in a pulse mode to perform a radiation imaging on the luggage or package object (105, 205, 305); a radioactive material monitoring subsystem (20) configured to operate in the pulse mode to monitor whether the luggage or package object (105, 205, 305) contains a radioactive material; and a synchronization control subsystem (30) being in communication with both the radiation imaging subsystem (10) and the radioactive material monitoring subsystem (20), and configured to control the radiation imaging subsystem (10) and the radioactive material monitoring subsystem (20) to operate alternately.