Clinical Study
Personalization of CM Injection Protocols in Coronary Computed Tomographic Angiography (People CT Trial)
Table 1
Scan parameters for the used scan protocols.
| Parameter | High-pitch “flash” protocol | Adaptive sequence “AS” protocol | Helical protocol |
| Scout scans | | | | Tube voltage | 100 kV | 100 kV | 100 kV | Tube current | 30 mAs | 30 mAs | 30 mAs |
| Calcium scoring | | | | Tube voltage | 120 kV | 120 kV | 120 kV | Tube current | 80 mAs | 80 mAs | 80 mAs |
| CCTA | | | | Heart rate | ≤70 bpm | 70–90 bpm | >90 bpm | Tube voltage | CARE kV | CARE kV | CARE kV | Qual. ref. tube voltage | 100 kVqual.ref | 100 kVqual.ref | 100 kVqual.ref | Qual. ref. tube current | 300 mAsqual.ref | 300 mAsqual.ref | 300 mAsqual.ref | Slider position | 11 | 11 | 11 | Delay | Test bolus | Test bolus | Test bolus | Collimation | 2 192 0.6 mm | 2 160 0.6 mm | 2 192 0.6 mm | Rotation time | 0.25 s | 1.25 s | 0.25 s | Pitch | 3.2 | — | 0.15 |
| Image reconstruction | | | | Slice thickness | 0.6 mm | 0.6 mm | 0.6 mm | Increment | 0.4 mm | 0.4 mm | 0.4 mm | Kernel | Bv40 | Bv36 | Bv40 | Strength | 2 | 3 | 3 |
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Bpm = beats per minute; CCTA = coronary cardiac computed tomography; Qual. ref. = quality reference.
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