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- W2365839904 abstract "Objective:Direct back-projection is a kind of fast and simple method for computed tomography image reconstruction,which causes star artifacts that lead to image blur.To effectively improve the quality of computed tomography reconstruction images,a new back-projection reconstruction algorithm based on penetrating-length weighted is introduced,and the method of penetrating-length calculation also provides a new way for the calculation of projection coefficient of algebra reconstruction algorithm.Methods: Using Visual C++ 6.0 as the programming tool to develop a project that can realize the computer simulation of the back-projection reconstruction process,which applies penetrating-length weighted algorithm to the Shepp-Logan model by computing the X-ray penetrating-length of each voxel.Results: A software was developed that could simulate the scanning and reconstruction processes of X-CT,display the images reconstructed by both traditional direct projection and penetrating-length weighted reconstruction algorithms,and conduct quantitative evaluation and qualitative analysis to these images.Conclusions: Simulation result shows that penetrating-length weighted algorithm can effectively improve the image quality by reducing the star artifacts,and its evaluation indicates(the normalized mean square distance criterion d,the normalized average absolute distance criterion r,the worst distance criterion e) are better than the traditional interpolation algorithm.Meanwhile,the software can provide a platform for the realization of other algorithms." @default.
- W2365839904 created "2016-06-24" @default.
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- W2365839904 date "2012-01-01" @default.
- W2365839904 modified "2023-09-23" @default.
- W2365839904 title "A Preliminary of Back-projection Reconstruction Algorithm Based on Penetrating-Length Weighted for Computed Tomography" @default.
- W2365839904 hasPublicationYear "2012" @default.
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