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European Radiology Experimental

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
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