Chinese Journal of Lasers, Volume. 47, Issue 2, 207027(2020)
Cherenkov-Excited Luminescence Scanned Tomography Reconstruction Based on Approximate Message Passing
Figures & Tables(13)
![Diagram of CELSI[3]. (a) CELSI imaging instrument; (b) process of photon excitation](/Images/icon/loading.gif){kind=icon}
Fig. 1. Diagram of CELSI[3]. (a) CELSI imaging instrument; (b) process of photon excitation
Fig. 5. Reconstructed images obtained by different algorithms with varied contrasts. Contrast of Figs. 5(a)--(f) is reduced from 4 to 1.5 by step of 0.5
Fig. 6. Profiles along horizontal line of reconstructed images of single target. (a) Contrast is 4; (b) contrast is 3; (c) contrast is 2
Fig. 7. Distributions of true single targets with different radii and reconstruction results obtained by different algorithms. (a)--(e) Radius of fluorescent target decreases from 7 mm to 3 mm with a step of 1 mm
Fig. 8. Comparison of results obtained by different reconstruction methods for single targets with varied radius. (a) CNR; (b) MSE
Fig. 9. Reconstruction results of different algorithms for multiple fluorescent targets
Table 1. Background optical parameters of phantommm-1
View tableTable 1. Background optical parameters of phantommm-1
Optical parameter μax μam μ'sx μ'sm ημaf Value 0.009 0.006 1.31 1.27 2.0×10-4
Table 2. Quantitative comparison of reconstruction results obtained by three different methods (Tikhonov, ISTA, and AMP) with varied contrast
View tableTable 2. Quantitative comparison of reconstruction results obtained by three different methods (Tikhonov, ISTA, and AMP) with varied contrast
Contrast CNR MSE PSNR FWHM Tikhonov ISTA AMP Tikhonov ISTA AMP Tikhonov ISTA AMP Tikhonov ISTA AMP 4 9.57 12.30 13.89 4.68×10-4 4.06×10-4 3.71×10-4 21.86 24.24 25.61 16.16 16.16 14.14 3.5 9.09 11.91 13.53 3.99×10-4 3.45×10-4 3.15×10-4 22.49 24.41 25.82 20.20 16.16 14.14 3 8.58 11.51 13.13 3.28×10-4 2.82×10-4 2.57×10-4 23.39 24.80 26.21 20.20 18.18 16.16 2.5 8.12 11.06 12.65 2.52×10-4 2.16×10-4 1.97×10-4 23.64 25.54 26.91 23.23 20.20 17.17 2 6.71 10.55 12.11 1.83×10-4 1.48×10-4 1.35×10-4 24.63 27.05 28.33 31.31 24.24 20.20 1.5 5.21 9.96 11.38 1.08×10-4 0.76×10-4 0.70×10-4 27.77 30.79 31.79 67.68 48.48 40.40
Table 3. Reconstruction time for different algorithms with varied contrasts
View tableTable 3. Reconstruction time for different algorithms with varied contrasts
Method Reconstruction time Contrast is 4 Contrast is 3.5 Contrast is 3 Contrast is 2.5 Contrast is 2 Contrast is 1.5 Tikhonov 48 49 48 48 40 39 ISTA 110 110 110 112 114 109 AMP 101 102 103 102 100 104
Table 4. Quantitative reconstruction results obtained by different algorithms for multiple fluorescent targets
View tableTable 4. Quantitative reconstruction results obtained by different algorithms for multiple fluorescent targets
Method Two targets Three targets CNR MSE CNR MSE T1 T2 T1 T2 T1 T2 T3 T1 T2 T3 Tikhonov 7.23 7.23 2.85×10-4 2.84×10-4 9.46 7.40 5.40 1.44×10-4 2.69×10-4 3.21×10-4 GPSR 4.30 4.52 4.58×10-4 4.51×10-4 9.47 3.37 2.37 2.08×10-4 4.55×10-4 4.40×10-4 TwIST 1.71 4.06 4.71×10-4 4.70×10-4 5.53 1.34 0.65 4.56×10-4 5.52×10-4 5.06×10-4 ISTA 8.70 8.57 2.57×10-4 2.61×10-4 9.84 6.88 4.98 1.48×10-4 3.03×10-4 3.43×10-4 AMP 10.14 10.09 2.19×10-4 2.18×10-4 9.86 8.10 6.20 1.34×10-4 2.43×10-4 2.74×10-4
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Feng Jinchao, Chang Di, Li Zhe, Sun Zhonghua, Jia Kebin. Cherenkov-Excited Luminescence Scanned Tomography Reconstruction Based on Approximate Message Passing[J]. Chinese Journal of Lasers, 2020, 47(2): 207027
Paper Information
Category: biomedical photonics and laser medicine
Received: Nov. 6, 2019
Accepted: --
Published Online: Feb. 21, 2020
The Author Email: Kebin Jia (kebinj@bjut.edu.cn)
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