A simulation study on basis material composition for dual energy CT imaging at high-energy level

Duan Xinhui, Zhang Li, Cheng Jianping, Chen Zhiqiang, Xing Yuxiang

Research output: Chapter in Book/Report/Conference proceedingConference contribution

4 Scopus citations

Abstract

Quantitative dual energy computed tomography (DECT) allows to obtain both density and atomic number andthus can provide information about material composition.In this paper, a DECT reconstruction method for high energy X-rays (1∼1OMV) is proposed based on a basis material decomposition model. Our method is to be adapted for cargo inspection. The difTerence from conventional DECT methods is derived from considering pair-production effect in reconstruction. This is unnecessary for DECT In usual energy level (lower than IMV). Therefore, an approximation of the attenuation process is made: attenuation of photoelectric effect is ignored our reconstruction due to its tiny contribution to total attenuation of multi-MY Xray beams. Under this assumption, we set up our mathematical models based on the framework of the basis material method for DECT. Numerical experiments are performed to validate the effectiveness of our method. Results shows that our assumption and method are reasonable and feasible to be applied to real data. Discussion of the results and possible improvements for future work are presented in the end.

Original languageEnglish (US)
Title of host publication2008 IEEE Nuclear Science Symposium Conference Record, NSS/MIC 2008
Pages1271-1273
Number of pages3
DOIs
StatePublished - Dec 1 2008
Event2008 IEEE Nuclear Science Symposium Conference Record, NSS/MIC 2008 - Dresden, Germany
Duration: Oct 19 2008Oct 25 2008

Publication series

NameIEEE Nuclear Science Symposium Conference Record
ISSN (Print)1095-7863

Other

Other2008 IEEE Nuclear Science Symposium Conference Record, NSS/MIC 2008
CountryGermany
CityDresden
Period10/19/0810/25/08

Keywords

  • Computed tomography(CT)
  • Dual energy
  • High energy
  • Reconstruction algorithm

ASJC Scopus subject areas

  • Radiation
  • Nuclear and High Energy Physics
  • Radiology Nuclear Medicine and imaging

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