Table 1 Activity concentrations and SBRs for all phantom acquisitions as determined with the dose calibrator
SBR (calculated) | Axial position (mm) | Sphere activity concentration (kBq/ml) | Background activity concentration (kBq/ml) | Fraction of rebinned acquisition time used for reconstruction |
|---|---|---|---|---|
8:1 (8.0:1) | 0 | 26.02 | 3.26 | 0.77 |
250 | 23.66 | 2.97 | 0.84 | |
450 | 21.66 | 2.72 | 0.92 | |
505 | 19.95 | 2.50 | 1.00 | |
4:1 (3.9:1) | 0 | 12.99 | 3.30 | 0.76 |
250 | 11.81 | 3.00 | 0.84 | |
450 | 10.88 | 2.76 | 0.91 | |
505 | 9.90 | 2.51 | 1.00 | |
2:1 (2.0:1) | 0 | 6.48 | 3.29 | 0.78 |
250 | 6.01 | 3.05 | 0.84 | |
450 | 5.47 | 2.77 | 0.92 | |
505 | 5.04 | 2.56 | 1.00 |