Table 1 Risk of fetal radiation exposure resulting from radiologic studies in the critically ill pregnant patient
Fetal radiation exposure (mGy) | |
|---|---|
Investigation | |
Chest X-ray (with abdomen shielded) | 0.01 |
Ventilation-perfusion scan | |
Perfusion | 0.1-1 |
Ventilation | 0.1-0.4 |
CT pulmonary angiogram | 0.1-4 |
CT pelvis and abdomen | 30-50 |
Radiation effect on the fetus | |
Teratogenicity | 50-100 |
Oncogenicity | 20-50 |