Table 3 Dose characteristics in the population
X-Ray (CR); Absorbed dose (n = 50) | X-Ray (CT); Absorbed dose (n = 50) | ||||||
|---|---|---|---|---|---|---|---|
Absorbed dose (n = 50) Parameter | Range | Mean ± SD | Mode | Absorbed dose (n = 50) Parameter | Range | Mean ± SD | Mode |
Right breast/unshielded (mGy) | 1.15–3.61 | 2.42 ± 0.58 | 1.75 | Right breast/unshielded (mGy) | 3.65–8.50 | 5.38 ± 2.11 | 4.48 |
Left breast/shielded (mGy) | 1.02–2.40 | 1.35 ± 0.33 | 1.23 | Left breast/shielded (mGy) | 2.20–4.13 | 2.02 ± 0.30 | 1.82 |
Dose difference | 2.61 (72.3%) | Dose difference | 4.37 (51.4%) | ||||
Both breasts | 1.02–3.61 | 1.94 ± 0.63 | 1.75 | Both breasts | 2.20–8.50 | 3.74 ± 2.28 | 4.48 |
Variables | T-statistics | p value | Inference | Variables | T-statistics | p value | Inference |
|---|---|---|---|---|---|---|---|
Paired-sample T test | |||||||
Right and left breast dose | 10.593 | 0.001 | Significant relationship exists | Right and left breast dose | 12.522 | 0.001 | Significant relationship exists |
Variables | r | p value | Inference | Variables | r | p value | Inference |
|---|---|---|---|---|---|---|---|
Pearson correlation of dose (n = 50) and biometric parameters to test for nature of relationship | |||||||
Left versus right breasts | 0.313 | 0.015 | r = mild p = significant | Left versus right breasts | 0.202 | 0.025 | r = mild p = significant |
Dose versus age | 0.072 | 0.586 | Weak | Age | 0.110 | 0.344 | Weak |
Dose versus weight | − 0.012 | 0.927 | Weak | Weight | 0.052 | 0.840 | Weak |
Dose versus height | − 0.034 | 0.796 | Weak | Height | − 0.020 | 0.690 | Weak |
Dose versus BMI | − 0.021 | 0.872 | Weak | BMI | − 0.102 | 0.912 | Weak |