Patient preparation | See Table 1 |
CT overview scan (scout or topogram) | Covered area: head, neck, chest, abdomen, and middle of thighs |
Dedicated head–neck CT scan | Patient position in scanner: head first, supine |
| Arms beside chest and abdomen as for conventional PET scan |
| Positioning aids for knee or ankle |
| Head fixation with vacuum-lock pillow |
| Scan direction: craniocaudal |
| Scan delay: 40 s after start of intravenous injection of 60 mL of contrast agent* |
| Scan from above calvaria to upper chest, depending on covered body area, with 2 PET bed positions |
| Tube current: 160 mA† |
| Tube voltage: 130 kV† |
| Slice thickness: 3 mm† |
Dedicated head–neck PET scan | Scan direction: caudocranial |
| Shallow breathing throughout scan |
Whole-body PET/CT scan* | See Table 1 |
| Scan area slightly overlapping that of head–neck scan |