Site and system | Centre 1 biograph 6 | Centre 2 biograph mCT | Centre 3 biograph 6 | ||||||
---|---|---|---|---|---|---|---|---|---|
PET acquisition | Duration per bed position | 2 min and 40 s (BMI ≤25) or 3 min and 40 s (BMI >25) | 2 min and 00 s | 2 min and 30 s (≤65 kg), 3 min (65–85 kg), 3 min and 30 s (85–100 kg), 4 min and 00 s (>100 kg) | |||||
PET reconstruction | Details | – | – | – | – | ≤65 kg | 65–100 kg | >100 kg | |
Reconstruction | OSEM3D | PSF | OSEM3D | PSF + TOF | OSEM3D | PSF | PSF | PSF | |
Iterations/subsets | 4i 8s | 3i 21s | 2i 24s | 2i 21s | 4i 8s | 3i 21s | 3i 21s | 3i 21s | |
Post-filter | 5 mm | 0 mm | 4.4 mm | 2 mm | 3.5 mm | 6 mm | 5 mm | 4 mm | |
Matrix | 168 × 168 | 168 × 168 | 200 × 200 | 200 × 200 | 168 × 168 | 168 × 168 | 168 × 168 | 168 × 168 | |
Pixel spacing | 4.07 × 4.07 | 4.07 × 4.07 | 4.07 × 4.07 | 4.07 × 4.07 | 3.39 × 3.39 | 3.39 × 3.39 | 3.39 × 3.39 | 3.39 × 3.39 | |
Slice thickness | 5 mm | 5 mm | 2.027 mm | 2.027 mm | 3 mm | 3 mm | 3 mm | 3 mm | |
EQ filter | 0 mm | 6.9 mm | 0 mm | 6.3 mm | 0 mm | 2.4 mm | 3.9 mm | 4.9 mm |