Figure 1

Figure 2

Acquisition parameters
| Hospital | A | B |
|---|---|---|
| Pitch | 0.55 | 0.656 |
| Rotation time (s) | 1 | 0.6 |
| kV | 120 | 120 |
| mA | 480 | 200 |
Mean measured skin dose to the breasts in both investigated hospitals
| Hospital A | Hospital B | |||
|---|---|---|---|---|
| unshielded | shielded | unshielded | shielded | |
| Mean skin dose to breast (μGy) | 338.2 ± 43.7 | 64.3 ± 18.8 | 253.1 ± 35.1 | 65.3 ± 16.9 |
| Dose reduction | 81% | 74% | ||