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- W4287889600 abstract "In practice, the cone-beam CT images are usually tarnished by ring artifacts. To address this problem, in this paper, we proposed a ring-artifact removal technique based on the nonlinear deviation correction of pixel response for flat panel detector (FPD), named as Nonlinear Deviation CorrecTion (NDCT). Our proposed NDCT is a two-point fitting correction method of the local response from mean projection images. Its advantages lie in the following three aspects. First, it obtains correction coefficients by solving the correction equations based on the mean projection images without additional scanning, which improves efficiency. Second, it corrects all pixels of FPD at the same time, which eliminates the inconsistency of adjacent pixels and then the ring-artifact within three-dimensional CT image can be corrected. Third, the calculation is very simple so the correction speed is fast, which further improves efficiency in practice. Both numerical and real experiments showed that our NDCT method achieved excellent performance and fast speed in ring artifact removal." @default.
- W4287889600 created "2022-07-26" @default.
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- W4287889600 date "2022-01-01" @default.
- W4287889600 modified "2023-09-23" @default.
- W4287889600 title "Nonlinear Deviation CorrecTion for Ring-Artifact Removal With Cone-Beam Computed Tomography" @default.
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- W4287889600 doi "https://doi.org/10.1109/tim.2022.3193713" @default.
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