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Table 1 Guideline of imaging protocol for routine spiral chest CT

From: Paediatric multi-detector row chest CT: what you really need to know

  kV Ref mAs CTDIvol Rotation time (s) Collimation Pitch
<9 kg 80 60 0.88 0.5 64 × 0.6 1
10–15 kg 100 30 1.00 0.5 64 × 0.6 1
16–25 kg 100 38 1.26 0.5 64 × 0.6 1
26–35 kg 100 42 1.40 0.5 64 × 0.6 1
36–45 kg 100 48 1.60 0.5 64 × 0.6 1