Zhenzhen Pi, Haijun Yu, Lei Li, Zhongjian Tian, Fenglin Liu. Triple-Source Swinging Spiral CT Imaging Method for Security Inspection[J]. Acta Optica Sinica, 2021, 41(16): 1611003
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- Acta Optica Sinica
- Vol. 41, Issue 16, 1611003 (2021)
Fig. 1. Schematic of TS-SCT. (a) Scanning trace lines; (b) geometric model in xoy plane
Fig. 2. Motion trajectories of X-ray source in different CT structures. (a) Motion trajectory of single-source spiral CT; (b) expanded view of moving track of single X-ray source in TS-SCT
Fig. 3. Geometric model of cone-beam spiral CT in z-direction. (a) p=T; (b) p>T
Fig. 4. Structural diagram of TS-SCT scanning
Fig. 5. Structural diagram of TS-SCT system
Fig. 6. Luggage phantom
Fig. 7. Reconstructed results from simulation experiment. (a) 128th layer original image of phantom in z-direction; 128th layer reconstructed images in z-direction for r of (b) 1/4, (c) 1/2, (d) 3/4, and (e) 1; (f) 154th layer original image of phantom in z-direction; 154th layer reconstructed images in z-direction for r of (g) 1/4, (h) 1/2, (i) 3/4, and (j) 1
Fig. 8. Simulation experiment. (a) Experimental system; (b) photo of test sample
Fig. 9. 3D reconstructed pseudo-color images. (a) r=1/2; (b) r=5/8; (c) r=1
Fig. 10. Reconstructed section images. (a)--(c) 150th layer images in z-direction; (d)--(f) 200th layer images in z-direction
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Table 1. Parameters for simulation
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Table 2. Quantification indexes of reconstructed images in different layers for different r values
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Table 3. Parameters for simulation experiment
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