Total effective dose equivalent to the public does not exceed .01 mSv

• A. 0.01 mSv
• B. 0.1 mSv
• C. 0.001 mSv
• D. 1 mSv

Answer: (A)

The point here is understanding the per‑exposure dose limit for the public in diagnostic radiology. That limit is 0.01 mSv per exposure, chosen to keep risk to the general population extremely low while still allowing necessary imaging. This small ceiling helps ensure that, even with multiple exposures over time, the overall dose to a member of the public remains tightly controlled under ALARA.

Why this is the best choice: 0.01 mSv is the established per‑exposure limit for the public, making it the correct threshold for a single diagnostic event. Exceeding it would mean a single exposure is already above the allowed public limit. The other numbers either reflect annual public dose limits (1 mSv), are unrealistically small for a per‑exposure ceiling (0.001 mSv), or pertain to annual limits rather than a single exposure (0.1 mSv).