Xue-zhi REN, Peng HE, Zou-rong LONG, Xiao-dong GUO, Kang AN, Xiao-jie LÜ, Biao WEI, Peng FENG. Research on Spectral CT Image Denoising Via Fully Convolution Pyramid Residual Network[J]. Spectroscopy and Spectral Analysis, 2021, 41(9): 2950
- Spectroscopy and Spectral Analysis
- Vol. 41, Issue 9, 2950 (2021)
Fig. 1. FCPRN structure
Fig. 2. Spectral CT system based on photon-counting detector
Fig. 3. Reconstructed spectral CT images of the six energy ranges at one position
The energy ranges from (a) to (f) are 25~90, 30~90, 35~90, 40~90, 45~90 and 50~90 keV; The noise in reconstructed spectral CT images of different energy ranges are distinct
The energy ranges from (a) to (f) are 25~90, 30~90, 35~90, 40~90, 45~90 and 50~90 keV; The noise in reconstructed spectral CT images of different energy ranges are distinct
Fig. 4. Reference images of the six energy ranges at one position
The energy ranges from (a) to (f) are 25~90, 30~90, 35~90, 40~90, 45~90 and 50~90 keV
The energy ranges from (a) to (f) are 25~90, 30~90, 35~90, 40~90, 45~90 and 50~90 keV
Fig. 5. Denoising results of DNCNN, REDCNN and FCPRN in three energy bins (25~90, 35~90 and 45~90 keV)
Fig. 6. Details of denoising based on DNCNN, REDCNN and FCPRN in the three energy bins (25~90, 35~90 and 45~90 keV)
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Table 1. The structure and parameters of FCPRN
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Table 2. Quantitative results of different networks
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