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Image Covariance and Lesion Detectability in Direct Fan-Beam X-Ray Computed Tomography
We consider noise in computed tomography images that are reconstructed using the classical direct fan-beam filtered backprojection algorithm, from both full and short-scan data. A new, accurate method for computing image covariance is presented. The utility of the new covariance method is demonstrat...
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| Main Authors: | , |
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| Format: | Artigo |
| Sprog: | Inglês |
| Udgivet: |
2008
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| Fag: | |
| Online adgang: | https://ncbi.nlm.nih.gov/pmc/articles/PMC2860864/ https://ncbi.nlm.nih.gov/pubmed/18424878 https://ncbi.nlm.nih.govhttp://dx.doi.org/10.1088/0031-9155/53/10/002 |
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