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Penalized Weighted Least-Squares Approach to Sinogram Noise Reduction and Image Reconstruction for Low-Dose X-Ray Computed Tomography

Reconstructing low-dose X-ray CT (computed tomography) images is a noise problem. This work investigated a penalized weighted least-squares (PWLS) approach to address this problem in two dimensions, where the WLS considers first- and second-order noise moments and the penalty models signal spatial c...

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Hlavní autoři: Wang, Jing, Li, Tianfang, Lu, Hongbing, Liang, Zhengrong
Médium: Artigo
Jazyk:Inglês
Vydáno: 2006
Témata:
On-line přístup:https://ncbi.nlm.nih.gov/pmc/articles/PMC1619874/
https://ncbi.nlm.nih.gov/pubmed/17024831
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