Table 10.
Recommendations for long‐term data collection to determine baseline values and tolerances necessary for the establishment of a DECT quality control program. All acquisitions apply to the DEQC body phantom and are performed in helical scan mode, using a 40 mm beam width, Large Body SFOV, 42 cm DFOV, and standard reconstruction filter
| Acquisition | GSI‐preset | Pitch | Rotation time (s) | mA | Image thickness (mm) | CTDIvol (mGy) |
|---|---|---|---|---|---|---|
| 1 | GSI‐1 | 0.516 | 0.5 | 630 | 5 | 33.9 |
| 2 | GSI‐5 | 0.984 | 1 | 600 | 5 | 32.5 |
| 3 | GSI‐10 | 0.984 | 0.8 | 600 | 5 | 25.5 |
| 4 | GSI‐1 | 0.984 | 0.5 | 630 | 5 | 17.8 |
| 5 | GSI‐54 | 0.516 | 0.6 | 275 | 5 | 17.4 |
| 6 | GSI‐48 | 0.516 | 0.7 | 260 | 5 | 17.2 |