• Key Magazine of China Technology(CSTPCD)
ISSN 1004-4140
CN 11-3017/P
LIU Yuan-yuan, ZHENG Peng, XING Yu-xiang, CHEN Zhi-qiang, ZHANG Li. Propagation Analysis for Spectrum Error in Dual-energy CT[J]. CT Theory and Applications, 2013, 22(4): 571-578.
Citation: LIU Yuan-yuan, ZHENG Peng, XING Yu-xiang, CHEN Zhi-qiang, ZHANG Li. Propagation Analysis for Spectrum Error in Dual-energy CT[J]. CT Theory and Applications, 2013, 22(4): 571-578.

Propagation Analysis for Spectrum Error in Dual-energy CT

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  • Received Date: May 14, 2013
  • Available Online: December 28, 2022
  • Dual-energy CT can be used for computing atomic number and electron density. As a result, we can discriminate unknown materials. Spectrum estimation is the fn'st step in dual-energy CT. Its accuracy directly affects dual-energy CT results. However, no systematic studies concerning how spectrum estimation accuracycontributing to reconstruction results have been worked out up to now. This work employs photoelectric-Compton decomposition dual-energy CT reconstruction method. We quantitatively analyze the propagation process from spectrum estimation error to dual-energy CT results and give theoretical calculation method. We propose one way to define spectrum error for dual-energy CT and give the concept of equivalent spectrum. Simulations are shown to support our work.
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    ZHANG Li

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