公开(公告)号：US10935691B2

公开(公告)日：2021-03-02

申请号：US16234625

申请日：2018-12-28

Applicant: TSINGHUA UNIVERSITY ,  NUCTECH COMPANY LIMITED

Inventor： Kejun Kang ,  Jianmin Li ,  Xiulin Ni ,  Yulan Li ,  Yuanjing Li ,  Zhiqiang Chen ,  Li Zhang ,  Liang Li ,  Xiang Zou ,  Weifeng Yu ,  Hejun Zhou ,  Chunguang Zong

IPC: G01V5/00 ,  G01N23/046

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.

公开(公告)号：US11327198B2

公开(公告)日：2022-05-10

申请号：US16234621

申请日：2018-12-28

Applicant: TSINGHUA UNIVERSITY ,  NUCTECH COMPANY LIMITED

Inventor： Xiulin Ni ,  Jianmin Li ,  Haitian Tan ,  Yulan Li ,  Weifeng Yu ,  Yuanjing Li ,  Hejun Zhou ,  Zhiqiang Chen ,  Chunguang Zong ,  Li Zhang

IPC: G01N23/046 ,  G01V5/00 ,  A61B6/03 ,  A61B6/00 ,  G01N23/18

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 nonuniform 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.