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：EP4212917A1

公开(公告)日：2023-07-19

申请号：EP21866076.9

申请日：2021-09-10

申请人： Nuctech Company Limited ,  Tsinghua University

发明人： CHEN, Zhiqiang ,  ZHANG, Li ,  XU, Xiaofei ,  SHEN, Le ,  CHANG, Ming ,  TANG, Hu ,  JIN, Xin ,  SUN, Yunda

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

摘要： A multi-channel static CT device is provided, and the multi-channel static CT device includes: a scanning channel including a plurality of scanning sub-channels; a distributed X-ray source including a plurality of ray emission points arranged around the scanning channel; and a detector module including a plurality of detectors arranged around the scanning channel, wherein the plurality of detectors are arranged corresponding to the plurality of ray emission points.

公开(公告)号：EP3495850A1

公开(公告)日：2019-06-12

申请号：EP17836147.3

申请日：2017-02-10

申请人： Tsinghua University ,  Nuctech Company Limited

发明人： ZHANG, Li ,  CHEN, Zhiqiang ,  WANG, Sen ,  XU, Xiaofei ,  LI, Yuanjing ,  JIN, Xin

IPC分类号： G01T1/36

摘要： 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.