ISSN 1004-4140
CN 11-3017/P
Volume 29 Issue 1
Feb.  2020
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JIN Xin, ZHANG Siyuan, LI Liang, CHEN Zhiqiang. A Dual-energy Stationary CT System Based on Dual-plane Scanning Mode[J]. CT Theory and Applications, 2020, 29(1): 31-37. DOI: 10.15953/j.1004-4140.2020.29.01.04
Citation: JIN Xin, ZHANG Siyuan, LI Liang, CHEN Zhiqiang. A Dual-energy Stationary CT System Based on Dual-plane Scanning Mode[J]. CT Theory and Applications, 2020, 29(1): 31-37. DOI: 10.15953/j.1004-4140.2020.29.01.04
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A Dual-energy Stationary CT System Based on Dual-plane Scanning Mode

  • 1. Nuctech Company Limited, Beijing 100084, China;

  • 2. Department of Engineering Physics, Tsinghua University, Beijing 100084, China

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  • Received Date: November 14, 2019
  • Available Online: November 10, 2021
  • Published Date: February 24, 2020
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    • Abstract
  • Stationary CT technique is a promising approach for baggage inspection due to its high scanning speed compared with traditional spiral-CT. The main challenges which current stationary CT system meets are the geometric calibration, image reconstruction from limited angle data and matching of dual-energy projection. In this paper, we presented a dual-energy stationary CT system based on dual-plane scanning mode. The multi-bean X-ray source of the system is made of carbon nanotube cathode, which enables fast switching of exposure sequence. The dual-plane scanning mode is applied in order to increase the cover angle of projection data and reduce artifacts. The attenuation information is collected by the dual-energy detector which enables materials decomposition and recognition. According to the experimental results of luggage, the stationary CT system presented in this paper enables three-dimensional imaging of luggage with high resolution and detailed material information, which indicates its potential in applications of baggage inspection.
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