Scattering correction method for panel detector based cone beam computed tomography system |
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| Authors: | Jia Peng-Xiang Zhang Feng Yan Bin Bao Shang-Lian |
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| Affiliation: | Beijing City Key Lab of Medical Physics and Engineering, Peking University, Beijing 100871, China; China National Digital Switching System Engineering and Technological Research Center, Zhengzhou 450002, China |
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| Abstract: | A scattering correction method for a panel detector based cone beam computed tomography system is presented. First, the x-ray spectrum of the system is acquired by using the Monte Carlo simulation method. Secondly, scattered photon distribution is calculated and stored as correction matrixes by using the Monte Carlo simulation method according to scanned objects and computed tomography system specialties. Thirdly, scattered photons are removed from projection data by correction matrixes. A comparison of reconstruction image between before and after scattering correction demonstrates that the scattering correction method is effective for the panel detector based cone beam computed tomography system. |
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| Keywords: | scattering correction Monte Carlo simulation panel detector cone beam computed tomography system |
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