Maternal Organ and Embryo/Fetal Doses (mGy) of Pregnant Patients Undergoing 256-Slice CTPA at End of First Trimester
| BMI (kg/m2) | ||||
| Parameter | 19.7 | 22.9 | 26.3 | 30.1 |
| Site | ||||
| Breast | 2.70 | 5.60 | 6.49 | 10.5 |
| Colon | 0.03 | 0.06 | 0.06 | 0.12 |
| Lung | 2.70 | 5.38 | 5.59 | 8.25 |
| Red bone marrow | 0.73 | 1.36 | 1.33 | 1.81 |
| Stomach | 0.37 | 0.88 | 1.07 | 1.62 |
| Gonads | 0.04 | 0.10 | 0.09 | 0.15 |
| Bladder | 0.04 | 0.07 | 0.07 | 0.11 |
| Liver | 0.52 | 1.19 | 1.32 | 2.15 |
| Esophagus | 1.52 | 3.18 | 3.25 | 4.94 |
| Thyroid | 0.76 | 1.68 | 1.84 | 2.98 |
| Bone | 1.45 | 2.60 | 2.57 | 3.49 |
| Brain | 0.08 | 0.22 | 0.27 | 0.51 |
| Salivary glands | 0.09 | 0.25 | 0.33 | 0.58 |
| Skin | 0.45 | 0.96 | 1.17 | 1.96 |
| Remainder | 0.66 | 1.4 | 1.52 | 2.32 |
| Maternal effective dose (mSv) | 1.00 | 2.05 | 2.24 | 3.43 |
| Embryo/fetal dose (mGy) | 0.05 | 0.12 | 0.12 | 0.19 |