公开(公告)号：US09897716B2

公开(公告)日：2018-02-20

申请号：US14841991

申请日：2015-09-01

Applicant: TSINGHUA UNIVERSITY ,  NUCTECH COMPANY LIMITED

Inventor： Kejun Kang ,  Jingyu Gu ,  Zhiqiang Chen ,  Jianmin Li ,  Yuanjing Li ,  Yulan Li ,  Dongyu Wang

IPC: G01V5/00

CPC classification number: G01V5/0066 ,  G01V5/0016

Abstract: A vehicle-mounted inspection system comprises: a chassis; a rotation mechanism disposed on the chassis; a first ray emission device connected to the rotation mechanism and configured to emit a ray; a first detection device connected to the rotation mechanism and configured to receive the ray emitted by the first ray emission device; and a second ray emission device connected to the rotation mechanism and configured to emit a ray. The rotation mechanism is configured to rotate the first ray emission device, the first detection device and the second ray emission device substantially around an upright axis between a retracted position and an operating position.

公开(公告)号：US20170328844A1

公开(公告)日：2017-11-16

申请号：US15494884

申请日：2017-04-24

Applicant: Tsinghua University ,  Nuctech Company Limited

Inventor： Liang Li ,  Zhiqiang Chen ,  Kejun Kang ,  Li Zhang ,  Ziran Zhao ,  Yuxiang Xing ,  Jianmin Li ,  Yulan Li ,  Tiao Zhao

IPC: G01N23/087

CPC classification number: G01N23/087 ,  G01N23/046 ,  G01N2223/206 ,  G01N2223/419 ,  G01N2223/423

Abstract: Methods and system for decomposing a high-energy dual-energy X-ray CT material are disclosed. In the method, two types of effect such as Compton effect and electron pairing effect which dominates are reserved and the influence of the other effect such a photoelectric effect is removed so as to improve the accuracy of the material decomposition. The unique advantage of the present disclosure is to effectively remove the error of the calculated atomic number Z due to directly selecting two effects during processes of material decomposition in the conventional dual-energy CT method. This may greatly improve the accuracy of dual-energy CT identification of the material, and it is important to improve the conventional dual-use CT imaging system applications, such as clinical therapy, security inspection, industrial non-destructive testing, customs anti-smuggling and other fields.

公开(公告)号：US09766354B2

公开(公告)日：2017-09-19

申请号：US14152332

申请日：2014-01-10

Applicant: NUCTECH COMPANY LIMITED ,  TSINGHUA UNIVERSITY

Inventor： Yuanjing Li ,  Lan Zhang ,  Yulan Li ,  Yinong Liu ,  Jianqiang Fu ,  Hao Jiang ,  Zhi Deng ,  Tao Xue ,  Wei Zhang ,  Jun Li

IPC: G01T3/08 ,  G01T1/36 ,  G01T1/24

CPC classification number: G01T1/366 ,  G01T1/241 ,  G01T3/08

Abstract: The invention provides a semiconductor detector, and the semiconductor detector comprises a semiconductor crystal, a cathode, an anode and at least one ladder electrode; the semiconductor crystal comprises a top surface, a bottom surface and at least one side; the cathode, the anode and the ladder electrode are conductive thin films deposited on a surface of the semiconductor crystal; the cathode is disposed on the bottom surface of the semiconductor crystal, the anode is disposed on the top surface of the semiconductor crystal, the ladder electrode is disposed on the at least one side of the semiconductor crystal; and the ladder electrode comprises a plurality of sub-electrodes. As compared to the prior art, the semiconductor detector can improve the energy resolution.