Which arrangement correctly reflects ALARA as a protective concept for clinical practice?

Which arrangement correctly reflects ALARA as a protective concept for clinical practice?

• A. As Low As Reasonably Achievable
• B. Always Limit And Reduce All
• C. Approximate Level At Radiation Acceptable
• D. As Low As Reasonably Possible

Answer: (D)

ALARA means keeping radiation exposure as low as reasonably achievable. In practice, this means actively reducing dose at every step by applying time, distance, and shielding principles, justifying each exam, and optimizing techniques to use the smallest dose that still yields a useful image. The standard phrase captures the balance between minimizing dose and remaining feasible within available technology, resources, and practicality. The wording using “Possible” is not the accepted form, and other options don’t reflect the idea of ongoing optimization and protection.

ALARA means keeping radiation exposure as low as reasonably achievable. In practice, this means actively reducing dose at every step by applying time, distance, and shielding principles, justifying each exam, and optimizing techniques to use the smallest dose that still yields a useful image. The standard phrase captures the balance between minimizing dose and remaining feasible within available technology, resources, and practicality. The wording using “Possible” is not the accepted form, and other options don’t reflect the idea of ongoing optimization and protection.