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

Bpm = beats per minute; CCTA = coronary cardiac computed tomography; Qual. ref. = quality reference.