Mean CR and BV for Hot and Cold Spheres
| CR (%) | BV (%) | ||||||||||||
| Sphere diameter (mm) | 10 | 13 | 17 | 22 | 28 | 37 | 10 | 13 | 17 | 22 | 28 | 37 | Residual LE (%) |
| OSEM* | 24.7 (2.9) | 41.5 (3.4) | 50.1 (2.7) | 64.4 (1.3) | 67.2 (0.8) | 78.5 (0.7) | 5.0 (0.3) | 4.6 (0.2) | 4.2 (0.2) | 4.0 (0.1) | 3.7 (0.1) | 3.5 (0.1) | 9.1 (0.3) |
| OSEM PSF† | 42.7 (3.9) | 63.3 (5.3) | 66.4 (3.2) | 76.9 (1.9) | 75.8 (0.8) | 85.2 (0.6) | 6.1 (0.4) | 5.3 (0.3) | 4.7 (0.3) | 4.2 (0.2) | 3.9 (0.1) | 3.5 (0.1) | 6.2 (0.4) |
| B100‡ | 49.5 (3.9) | 68.2 (5.5) | 70.2 (3.4) | 79.9 (2.7) | 82.4 (0.9) | 90.6 (0.5) | 6.1 (0.4) | 5.3 (0.3) | 4.7 (0.3) | 4.3 (0.2) | 3.9 (0.2) | 3.6 (0.1) | 2.7 (0.2) |
| B200 | 40.0 (3.7) | 62.4 (5.2) | 67.6 (3.4) | 78.3 (2.4) | 79.7 (0.6) | 88.9 (0.4) | 5.1 (0.5) | 4.6 (0.3) | 4.2 (0.1) | 4.0 (0.1) | 3.7 (0.1) | 3.5 (0.2) | 2.9 (0.2) |
| B300 | 33.3 (3.4) | 57.3 (4.8) | 64.9 (3.4) | 76.7 (2.2) | 77.3 (0.5) | 87.4 (0.3) | 4.7 (0.4) | 4.4 (0.2) | 4.1 (0.1) | 3.8 (0.1) | 3.6 (0.1) | 3.5 (0.2) | 3.0 (0.2) |
| B400 | 28.4 (3.2) | 52.7 (4.6) | 62.4 (3.3) | 75.2 (2.2) | 75.2 (0.4) | 86.1 (0.2) | 4.5 (0.3) | 4.2 (0.3) | 4.0 (0.1) | 3.8 (0.2) | 3.6 (0.2) | 3.4 (0.2) | 3.1 (0.3) |
| B500 | 24.7 (2.9) | 48.8 (4.3) | 59.9 (3.2) | 73.7 (2.0) | 73.3 (0.4) | 84.8 (0.2) | 4.3 (0.3) | 4.1 (0.3) | 3.9 (0.2) | 3.7 (0.2) | 3.5 (0.2) | 3.4 (0.2) | 3.2 (0.2) |
| B600 | 21.9 (2.7) | 45.4 (4.0) | 57.6 (3.0) | 72.3 (2.0) | 71.6 (0.4) | 83.5 (0.2) | 4.2 (0.3) | 4.0 (0.3) | 3.8 (0.2) | 3.7 (0.2) | 3.5 (0.2) | 3.4 (0.2) | 3.5 (0.3) |
| B700 | 19.6 (2.5) | 42.3 (3.9) | 55.4 (3.0) | 71.0 (1.9) | 70.0 (0.4) | 82.4 (0.3) | 4.1 (0.4) | 3.9 (0.3) | 3.8 (0.3) | 3.7 (0.2) | 3.5 (0.2) | 3.4 (0.2) | 3.6 (0.3) |
| B800 | 17.8 (2.3) | 39.6 (3.6) | 53.4 (2.9) | 69.7 (1.9) | 68.5 (0.4) | 81.3 (0.2) | 4.0 (0.4) | 3.9 (0.3) | 3.8 (0.3) | 3.6 (0.3) | 3.5 (0.3) | 3.5 (0.2) | 4.0 (0.2) |
| B900 | 16.2 (2.2) | 37.2 (3.5) | 51.6 (2.8) | 68.5 (1.8) | 67.1 (0.4) | 80.3 (0.2) | 4.0 (0.3) | 3.9 (0.3) | 3.8 (0.3) | 3.6 (0.2) | 3.6 (0.2) | 3.5 (0.2) | 4.4 (0.3) |
| B1,000 | 15.0 (2.0) | 35.1 (3.3) | 49.8 (2.7) | 67.3 (1.8) | 65.9 (0.4) | 79.3 (0.2) | 3.9 (0.4) | 3.8 (0.3) | 3.7 (0.3) | 3.6 (0.3) | 3.5 (0.2) | 3.5 (0.2) | 4.8 (0.3) |
↵* OSEM (2 iterations, 24 subsets, 6.4-mm filter).
↵† OSEM PSF (3 iterations, 24 subsets, 2-mm filter).
↵‡ Bn indicates a Q.Clear reconstruction with a β value of n.
Hot spheres had diameters of 10, 13, 17, and 22 mm and cold spheres 28 and 37 mm, and mean residual LE as defined by NEMA (17). Values in parentheses are SDs.