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- W4362238643 abstract "In cone-beam X-ray computed tomography (CT), distances between the source, object, and detector influence the visual fidelity and voxel size of a reconstructed volume. Calibration using reference objects is an appropriate tool for preventing errors in the estimates of these distances. There is, however, a lack of such objects for high-resolution systems with a small field of view (FoV). In this work, we propose a method to measure the distances mentioned above, improving the determination of voxel size. We use a custom reference object suitable for a FoV of around one millimeter. Many approaches have been developed for this calibration task and discussed in the literature, but none apply to CT scanners with a small FoV and a cone-beam magnification close to one. The proposed method thus aims to provide a calibration procedure for such devices. A Rigaku Nano3DX CT scanner has been calibrated through this method and used for practical validation of the method's accuracy. Results have shown that this approach allows for accurate calibration, which leads to improvements in reconstruction quality and accuracy of voxel size determination." @default.
- W4362238643 created "2023-04-05" @default.
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- W4362238643 date "2020-02-01" @default.
- W4362238643 modified "2023-10-16" @default.
- W4362238643 title "Voxel Size Calibration for High-resolution CT" @default.
- W4362238643 doi "https://doi.org/10.58286/25109" @default.
- W4362238643 hasPublicationYear "2020" @default.
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