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Table 1 Summary of mean values for computed tomography dose metrics, overall and stratified for body mass index (BMI)

From: Using body mass index to estimate individualised patient radiation dose in abdominal computed tomography

  All (n = 50) BMI < 25 kg/m2 (n = 32) BMI ≥ 25 kg/m2 (n = 18) p-value
CTDIvol (mGy) 6.26 ± 3.83 4.33 ± 0.83 9.68 ± 4.65 0.000a
DLP (mGy.cm) 299.42 ± 196.06 202.36 ± 41.27 471.96 ± 241.73 0.000a
SSDE (mGy) 7.81 ± 3.08 6.22 ± 0.75 10.64 ± 3.61 0.000a
Effective dose (mSv) 4.77 ± 3.23 3.18 ± 0.62 7.59 ± 1.64 0.000a
  1. CTDIvol volume-computed tomography dose index, DLP dose length product, SSDE size-specific dose estimate, BMI Body mass index
  2. Data as means ± standard deviations of the mean
  3. aValue shows a statistically significant difference with a two-tailed p-value of less than 0.05, when the radiation doses of each protocol are compared with one another