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Measured scatter-to-primary ratios (%) for the 8 cylinders investigated in this work. With 3 mm beam collimation and the 1D-ASG, only the largest Teflon and PMMA cylinders have SPR > 1%.
| Material | Water | PMMA | Teflon | |||||
|---|---|---|---|---|---|---|---|---|
| Diameter (cm) | 20.3 | 5.1 | 15.9 | 20.3 | 30.5 | 5.1 | 11.4 | 17.8 |
| 90 kVp | 0.20 | 0.13 | 0.44 | 0.68 | 2.91 | 0.09 | 0.49 | 1.36 |
| 120 kVp | 0.59 | 0.17 | 0.34 | 1.00 | 3.00 | 0.21 | 0.80 | 1.93 |
| 140 kVp | 0.39 | 0.18 | 0.48 | 0.63 | 3.63 | 0.27 | 0.59 | 2.72 |
