公开(公告)号：EP3505977A1

公开(公告)日：2019-07-03

申请号：EP19150074.3

申请日：2019-01-02

Applicant: Tsinghua University ,  Nuctech Company Limited

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

IPC: G01V5/00

Abstract: 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, and generates a CT image based on the detection data and the rotational position of the detection device each time the radioactive source device emits a beam. The present disclosure can accurately determine the rotational position of the detection device each time the radioactive source device emits a beam, so that it is possible to effectively reduce the image deformation and improve the accuracy of detection results.

公开(公告)号：EP4459332A1

公开(公告)日：2024-11-06

申请号：EP22914540.4

申请日：2022-12-23

Applicant: Nuctech Company Limited

Inventor： CHEN, Zhiqiang ,  LI, Yuanjing ,  SUN, Shangmin ,  ZONG, Chunguang ,  NI, Xiulin ,  ZOU, Xiang ,  YIN, Wei ,  YU, Weifeng

IPC: G01V5/00 ,  G01N23/04

Abstract: Provided is a multi-ray source inspection apparatus, including: a first inspection device (10) configured to acquire a two-dimensional first transmission image of an inspected object and a second inspection device (20) configured to acquire a second transmission image of the inspected object including three-dimensional information. A first radiation beam and a second radiation beam are emitted in a time-sharing manner, and the two-dimensional first transmission image and the second transmission image including the three-dimensional information are respectively acquired after the inspected object passes an inspection channel once. An inspection method using multiple ray sources is further provided.

公开(公告)号：EP3505978A1

公开(公告)日：2019-07-03

申请号：EP19150075.0

申请日：2019-01-02

Applicant: Tsinghua University ,  Nuctech Company Limited

Inventor： NI, Xiulin ,  LI, Jianmin ,  TAN, Haitian ,  LI, Yulan ,  YU, Weifeng ,  LI, Yuanjing ,  ZHOU, Hejun ,  CHEN, Zhiqiang ,  ZONG, Chunguang ,  ZHANG, Li

IPC: G01V5/00

Abstract: The present disclosure relates to the technical field of CT detection, in particular to a CT inspection system and a CT imaging method. The CT inspection system provided by the present disclosure includes a scanning device and an imaging device, wherein the scanning device having a radioactive source device and a detection device is configured to rotate at a non-uniform speed in at least partial process of scanning an object to be detected; and the imaging device generates a CT image based on effective detection data, wherein the effective detection data refer to data acquired each time the detection device rotates by a preset angle. In the present disclosure, the imaging device of the CT inspection system generates a CT image based on data acquired each time the detection device rotates by a preset angle, which, compared with traditional image collection solutions, can effectively reduce image deformation and improve accuracy of detection results.