Yunbin Chen, Qinghua Liu, Yuan Wang, Chengxin Zhang. Suppression of Weighting Artifact in Computed Tomography Detector-Displaced Reconstruction[J]. Acta Optica Sinica, 2019, 39(12): 1234001
- Acta Optica Sinica
- Vol. 39, Issue 12, 1234001 (2019)
Fig. 1. Illustration of detector-displaced scan
Fig. 2. Original projection data and truncated projection data. (a) Original projection data with 924-pixel width; (b) truncated projection with 724-pixel width;(c) truncated projection with 524-pixel width
Fig. 3. Reconstructed images. (a) Reconstructed image of projection p1; (b) reconstructed image of projection p2; (c) reconstructed image of projection p3
Fig. 4. Horizontal profiles of gray value. (a) Horizontal profiles of reconstructed images corresponding to projection data p1 and p2; (b) horizontal profiles of reconstructed images corresponding to projection data p1 and p3
Fig. 5. Extending weighting region of projection data
Fig. 6. Reconstructed images without and with weighting artifact correction. (a) Reconstructed image of p3 without artifact correction; (b) reconstructed image of p3 with artifact correction; (c) reconstructed image of p2
Fig. 7. Horizontal profiles of gray value. (a) Horizontal profiles of reconstructed images corresponding to p2 and p3 without correction; (b) horizontal profiles of reconstructed images corresponding to projection p2 and p3 with correction
Fig. 8. Reconstructed images without and with weighting artifact correction. (a) Reconstructed image of p3 without artifact correction; (b) reconstructed image of p3 with artifact correction; (c) reconstructed image of p2
Fig. 9. Horizontal profiles of gray value. (a) Horizontal profiles of reconstructed images corresponding to projection data p2 and p3 without correction; (b) horizontal profiles of reconstructed images corresponding to projection data p2 and p3 with correction
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Table 1. Imaging parameters
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