What does ALARA stand for?

What does ALARA stand for?

• A. All Low And Radically Achievable
• B. As Low As Radiation Achievable
• C. As Low As Reasonably Achievable
• D. Always Limit And Reduce Absorption

Answer: (C)

ALARA means keeping radiation exposure as low as reasonably achievable. This principle recognizes that some dose is inevitable in diagnostic imaging, but every practical step should be taken to reduce it without compromising the diagnostic quality of the image. In practice, that means using the lowest acceptable exposure settings, proper collimation to limit the beam to the area of interest, shielding when appropriate, maintaining good technique and positioning to avoid repeats, and keeping equipment well calibrated. It also involves weighing benefits against risks and costs, so “reasonably achievable” guides decisions rather than aiming for zero exposure when that would degrade the test’s diagnostic value. The other phrasings aren’t the standard term used in radiologic protection.

ALARA means keeping radiation exposure as low as reasonably achievable. This principle recognizes that some dose is inevitable in diagnostic imaging, but every practical step should be taken to reduce it without compromising the diagnostic quality of the image. In practice, that means using the lowest acceptable exposure settings, proper collimation to limit the beam to the area of interest, shielding when appropriate, maintaining good technique and positioning to avoid repeats, and keeping equipment well calibrated. It also involves weighing benefits against risks and costs, so “reasonably achievable” guides decisions rather than aiming for zero exposure when that would degrade the test’s diagnostic value. The other phrasings aren’t the standard term used in radiologic protection.