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Table 6 Additional EAR from imaging only if imaging was considered separately from the treatment plan

From: Imaging dose and secondary cancer risk in image-guided radiotherapy of pediatric patients

  Scenario 2 (real) Scenario 3 (200° kV-CBCT) Scenario 4 (360° kV-CBCT) Scenario 5 (6 MV axes) Scenario 6 (6MV CBCT)
Left lung 0.26 ± 0.34 (0–5.25) 0.08 ± 0.59 (0–5.25) 0.29 ± 0.21 (0.06–5.25) 0.48 ± 0.31 (0.04–5.25) 2.48 ± 1.62 (0.26–5.25)
Right lung 0.25 ± 0.34 (0–1.07) 0.07 ± 0.48 (0–0.15) 0.18 ± 0.17 (0–0.48) 0.34 ± 0.21 (0.04–0.63) 2.28 ± 1.38 (0.24–4.32)
Left breast 0.89 ± 0.57 (0.31–1.41) 0.24 ± 0.10 (0.16–0.39) 1.74 ± 0.83 (1.05–2.96) 2.51 ± 1.27 (1.45–4.35) 10.27 ± 5.08 (6.37–17.7)
Right breast 0.78 ± 0.61 (0.23–1.52) 0.23 ± 0.11 (0.08–0.33) 1.71 ± 0.65 (0.97–2.33) 1.80 ± 0.70 (1.05–2.41) 10.60 ± 3.68 (6.37–13.98)
  1. This table assumes that imaging was considered separately from the treatment dose. In this case, a linear risk model would be applied as imaging dose is in the low dose regime. Data are given as cases per 104 PY, average ± standard deviation, range in braces