Table 1 Acute radiation exposure thresholds for increased risk of negative fetal impact in humans
From: Impact of near continuous low dose rate neutron irradiation on pregnancy outcomes in mice
Weeks Post-Conception | Estimated Dosing Thresholds |
|---|---|
0–2 weeks | 50-100 mGy – All-or-nothing resorption/miscarriage effect |
2–8 weeks | > 200 mGy – Risk of induced developmental defects 200-250 mGy – Risk of fetal growth restriction |
8–15 weeks | 60-310 mGy – Risk of severe intellectual disability 200 mGy – Risk of microcephaly |
16–25 weeks | 250-280 mGy – Risk of severe intellectual disability |
