Baolei Li, Pingyu Zhang, Bin Li, Yang Mo, Bo Meng, Yaojun Zhang. Optimized Iterative Method for Projection Decomposition of X-Ray Dual-Energy Computed Tomography[J]. Acta Optica Sinica, 2017, 37(10): 1034001
- Acta Optica Sinica
- Vol. 37, Issue 10, 1034001 (2017)
Fig. 1. Schematic of initial value selection for iterative calculation
Fig. 2. Spectra of true dual-energy CT system. (a) Low energy spectrum; (b) high energy spectrum
Fig. 3. Projection lookup table images of true dual-energy CT system. (a)(b) Before optimization; (c)(d) after optimization
Fig. 4. Spectra of pseudo dual-energy CT system. (a) Low energy spectrum; (b) high energy spectrum
Fig. 5. Projection lookup table images of pseudo dual-energy CT system. (a) Carbon; (b) aluminum
Fig. 6. Gray scale curves of projection lookup tables of pseudo dual-energy CT system. (a) Carbon; (b) aluminum
Fig. 7. Schematic of calibration scope optimization for dual-energy projection
Fig. 8. Linear attenuation coefficient curves of iron and copper
Fig. 9. True dual-energy projection curves of iron and copper
Fig. 10. True dual-energy projection curves of copper
Fig. 11. Projection lookup table images of true dual-energy CT system after calibration scope optimization. (a) Carbon; (b) aluminum
Fig. 12. Pseudo dual-energy projection curve of copper
Fig. 13. Projection lookup table images of pseudo dual-energy CT system after calibration scope optimization. (a) Carbon; (b) aluminum
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