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Table 2 Relevant CT parameters for imaging patients with congenital heart disease using a dual-source CT system

From: Technical principles of computed tomography in patients with congenital heart disease

  Paediatric patients Adult patients
Slice collimation Thin collimation: 2 × 64 × 0.6 mm
Thick collimation: 2 × 24 × 1.2 mm
Tube voltage / tube current <20 kg: 80 kVp/50 mAs BMI ≤25 kg/m2: 100 kVp/150 mAs
20–30 kg: 80 kVp/80 mAs (ECG-synchronised: 100 kVp/220 mAs)
30–50 kg: 80 kVp/150 mAs BMI >25 kg/m2: 120 kVp/180 mAs
50–60 kg: 80 kVp/250 mAs (ECG-synchronised: 120 kVp/330 mAs)
Gantry rotation time 330 ms
Pitch 1 (non-ECG-synchronised CT)
0.2–0.5 (retrospective ECG-gated CT; pitch depending on the heart rate)