protocol 1 (mean ± SD) | protocol 2 (mean ± SD) | p-value | |
CTDI (mGy) | 12.4 ± 5.1 | 16.3 ± 7.8 | 0.11 |
DLP (mGy·cm) | 297.4 ± 129.7 | 350.37 ± 126.8 | 0.533 |
ED (mSv) | 4.87 ± 2.3 | 5.12 ± 2.8 | 0.533 |
Breast surface dose (mSv) | |||
left | 9.41 ± 0.6 | 23.8 ± 1.2 | 0.027 |
right | 10 ± 0.4 | 24.08 ± 0.7 | 0.026 |