Diagnostic PET/CT Acquisition Parameters for Whole-Body and Combined Head/Neck–Torso Protocol
| Protocol | Standard whole-body | Neck–Torso | ||
|---|---|---|---|---|
| Imaging range | Whole-body | Torso | Neck | |
| Topogram | 1024 mm | 756 mm | 256 mm | |
| CT contrast | 140 mL: 90 mL at 3 mL/s, 50 mL at 1.5 mL/s | 90 mL: 60 mL at 3 mL/s, 30 mL at 1.5 mL/s | 60 mL: 60 mL at 3 mL/s | |
| CT scan | Single-spiral 130 kVp, 110 mAs 0.8-s rotation time 5-mm slice width 8-mm table feed | Single-spiral 130 kVp, 100 mAs 0.8-s rotation time 5-mm slice width 8-mm table feed | Single-spiral 130 kVp, 160 mAs 0.8-s rotation time 3-mm slice width 5-mm table feed | |
| Emission scan | 3.5 min per bed 2 iterations and 8 subsets on 128 matrix with 5-mm Gaussian | 3 min per bed 2 iterations and 8 subsets on 128 matrix with 5-mm Gaussian | 6 min per bed 4 iterations and 8 subsets on 256 matrix with 3-mm Gaussian, zoom 2 | |
| CT postprocessing | Lung window | Lung window | Zoomed head | |