Which statement best reflects ALARA principles in pediatric imaging?

• A. As Low As Reasonably Achievable; minimize dose with pediatric-specific protocols due to higher sensitivity.
• B. Always reduce imaging in children regardless of clinical need.
• C. Use adult imaging protocols for children to save time.
• D. Increase dose to improve image quality in pediatric studies.

Answer: (A)

ALARA in pediatric imaging means keeping radiation exposure as low as reasonably achievable while still obtaining the necessary diagnostic information. Because children are more radiosensitive and have a longer lifetime ahead for potential effects, the dose should be minimized through pediatric-specific protocols and size-adjusted exposure factors. This involves selecting technique factors appropriate for small patients, using automatic exposure control, tight collimation, shielding when appropriate, and minimizing repeats or the need for re-imaging; and when possible, choosing alternative modalities that do not involve ionizing radiation. The other approaches either ignore clinical necessity, apply adult protocols that raise dose, or advocate increasing dose for image quality, all of which contradict ALARA.