Table 2.
Comparison of the CT number of three ROIs of the anthropomorphic pelvis phantom. For the proposed method, three blockers were used, they have the same strip width of 20 pixels (B20) and different gap width 20, 40, 60 pixels (G20, G40, G60), three moving speeds were used (8, 15, 23 pixels per projection)
| Blocker | Moving speed (pixels per projection) | ROI1 mean/stda | ROI2 mean/std | ROI3 mean/std | RMSE e |
|---|---|---|---|---|---|
| G20 | 8 | 102/44 | 106/45 | 54/12 | 35 |
| G20 | 15 | 89/40 | 98/45 | 51/13 | 30 |
| G20 | 23 | 100/43 | 104/46 | 55/12 | 34 |
| G40 | 8 | 74/39 | 96/56 | 42/8 | 26 |
| G40 | 15 | 72/43 | 93/50 | 40/11 | 25 |
| G40 | 23 | 73/38 | 103/55 | 35/5 | 25 |
| G60 | 8 | 76/41 | 102/43 | 31/7 | 22 |
| G60 | 15 | 76/40 | 95/44 | 12/6 | 13 |
| G60 | 23 | 64/30 | 94/47 | 21/7 | 19 |
| Varian scatter correction images | 62/32 | 75/17 | 5/9 | 15 | |
| No scatter correction images | ‐253/34 | ‐177/52 | ‐261/10 | 290 | |
| Simulated scatter free images | 88/13 | 79/12 | 3/5 |
a
Standard Variation.