Assessment of Line-of-Response Probability Density Function System Matrix for PET
Pages 197 - 203
Abstract
System matrix is an essential element to build the iterative PET image reconstruction algorithm. In this paper, the analytical calculation method and Monte Carlo method are respectively used to generate the system matrices. The obtained system matrices are verified in GATE with the simulation model according to the actual PET. The reconstructed images obtained by these two methods are compared according to image quality evaluation parameters of PSNR and SSIM. Simulation results show that the quality of the reconstructed image by Monte Carlo method is much better. But it takes much long time to build the Monte Carlo system matrix, and the reconstructed image by Monte Carlo method degenerates greatly with the iteration time increasing.
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Index Terms
- Assessment of Line-of-Response Probability Density Function System Matrix for PET
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Published In
March 2019
327 pages
ISBN:9781450361309
DOI:10.1145/3326172
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Association for Computing Machinery
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Published: 28 March 2019
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ICBET ' 19
ICBET ' 19: 2019 9th International Conference on Biomedical Engineering and Technology
March 28 - 30, 2019
Tokyo, Japan
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