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. Author manuscript; available in PMC: 2016 Apr 28.
Published in final edited form as: AJR Am J Roentgenol. 2015 Nov;205(5):1026–1037. doi: 10.2214/AJR.14.14185

TABLE 1.

Protocols for Routine Pediatric Abdominopelvic and Chest CT Examinations

CT Examination Protocol, Contrast Agent Status, Patient Weight Kilovoltage Quality Reference Tube Current–Exposure Time Product (mAs) Pitch Rotation Time (s) Collimation (mm) Kernel Thickness (mm)/Interval (mm) CTDIvol (mGy)
Abdominopelvic
 With IV contrast agent
  < 8 kg 80 690 1.4 0.28 128 × 0.6 B40, I30–3 3/3 Varies (≈ 2.2)
  8–20 kg 100 330 1.4 0.28 128 × 0.6 B40, I30–3 3/3 Varies (≈ 3.6)
  20–45 kg 120 180 1.4 0.28 128 × 0.6 B40, I30–3 3/3 Varies (≈ 5.2)
 Without IV contrast agent, 0–45 kg 120 180 1.4 0.28 128 × 0.6 B40, I30–3 33 Varies (≈ 4)
Chest
 With IV contrast agent
  < 8 kg 80 340 1.4 0.28 128 × 0.6 B40, I30–3 3/3 Varies (≈ 1.1)
  8–20 kg 100 160 1.4 0.28 128 × 0.6 B40, I30–3 3/3 Varies (≈ 1.8)
  20–45 kg 120 90 1.4 0.28 128 × 0.6 B40, I30–3 3/3 Varies (≈ 2.6)
 Without IV contrast agent, 0–45 kg 120 90 1.4 0.28 128 × 0.6 B40, I30–3 3/3 Varies (≈ 2)

Note—CTDIvol = volume CT dose index.