Table 3 Comparison of PET-dependent parameters between NIM PET/CT phantom and NEMA IEC Body phantom
Sphere size (mm) | Contrast (%) | Background variability (%) | Residual error (%) | |
|---|---|---|---|---|
NIM PET/CT phantom | 37 | 82.11 | 2.05 | 8.98 |
28 | 75.81 | 2.67 | ||
22 | 73.11 | 3.27 | ||
17 | 71.43 | 3.86 | ||
13 | 61.09 | 4.64 | ||
10 | 45.08 | 5.46 | ||
7 | 20.52 | 6.45 | ||
4 | – | – | ||
NEMA IEC Body phantom | 37 | 82.21 | 1.99 | 9.10 |
28 | 74.84 | 2.53 | ||
22 | 72.38 | 3.04 | ||
17 | 69.01 | 3.59 | ||
13 | 58.41 | 4.32 | ||
10 | 42.52 | 5.33 |