What is the annual limit for fetal exposure to radiation expressed in Sieverts?

The correct annual limit for fetal exposure to radiation is set at 0.005 Sv (5 mSv). This limit is established to minimize the risk of potential harm to the developing fetus from ionizing radiation. Exposure to radiation during pregnancy is monitored closely because the fetus is particularly sensitive to its effects due to rapid cell division and development.

The limit of 0.005 Sv is in line with international safety standards, which are designed to protect both the mother and the unborn child. This value reflects the understanding that while low levels of radiation may not pose significant risks to the mother, even small doses can carry risks for the fetus.

Understanding this context is critical for those working in medical imaging and radiation therapy, where patient and fetal safety must be prioritized. The setting of this limit represents an approach to safeguard against potential teratogenic effects that can occur with increased radiation exposure during critical developmental periods.