The primary purpose of the ALARA principle in diagnostic imaging is to:

• A. Increase image quality
• B. Improve workflow efficiency
• C. Protect equipment from damage
• D. Reduce radiation dose to occupational workers

Answer: (D)

ALARA means keeping exposure to radiation as low as reasonably achievable. In diagnostic imaging, the focus is on protecting people, especially workers who operate equipment, by minimizing their radiation dose while still obtaining a diagnostic-quality image. This involves practical steps like using the shortest feasible exposure time, maintaining maximum possible distance from the x-ray source, using appropriate shielding, and selecting exposure factors and imaging protocols that deliver enough image quality with the lowest reasonable dose. The aim isn’t to maximize image quality at any cost, nor to improve workflow or protect the equipment itself; it’s about safety and dose optimization for people.