A pregnant radiographer's gestational fetal exposure must not exceed what amount in one month?

A pregnant radiographer's gestational fetal exposure must not exceed what amount in one month?

• A. 0.05 mSv.
• B. 0.5 mSv.
• C. 1 mSv.
• D. 1.5 mSv.

Answer: (B)

Protecting the fetus of a pregnant radiographer relies on keeping fetal exposure within established safety limits, with an emphasis on ALARA. The monthly limit for fetal dose is 0.5 mSv, meaning the fetus should not receive more than 0.5 mSv in any single month of occupational exposure. Over a typical nine-month pregnancy, this corresponds to a total around 5 mSv, which helps keep the cumulative risk low and avoids deterministic effects in development. Options above 0.5 mSv per month would exceed the recommended cumulative threshold, while an option as low as 0.05 mSv per month would be stricter than necessary. Therefore, 0.5 mSv per month is the appropriate limit.

Protecting the fetus of a pregnant radiographer relies on keeping fetal exposure within established safety limits, with an emphasis on ALARA. The monthly limit for fetal dose is 0.5 mSv, meaning the fetus should not receive more than 0.5 mSv in any single month of occupational exposure. Over a typical nine-month pregnancy, this corresponds to a total around 5 mSv, which helps keep the cumulative risk low and avoids deterministic effects in development.

Options above 0.5 mSv per month would exceed the recommended cumulative threshold, while an option as low as 0.05 mSv per month would be stricter than necessary. Therefore, 0.5 mSv per month is the appropriate limit.