In radiation protection, the concept of 'ALARA' stands for:

• A Allowing Limits And Reducing Attenuated radiation
• B Achieving Lower Annual Radiation Averages
• C Adjusted Linear Attenuation Radiation Analysis
• D As Low As Reasonably Achievable ✓

Explanation

ALARA (As Low As Reasonably Achievable) is the guiding principle of radiation protection in diagnostic imaging, mandating that all radiation exposures be kept as low as reasonably achievable, taking economic and social factors into account. It does not mean zero dose or avoidance of justified examinations, but optimization of dose consistent with the diagnostic purpose. This is the second of the three principles (Justification, Optimization/ALARA, Dose Limitation) of the ICRP radiation protection framework.

Reference: Grainger & Allison's Diagnostic Radiology, 7th ed.

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Written and medically reviewed by the StethoPrep medical team.