During a typical DXA scan, how far should the operator stand from the x-ray source?

• A. About 1 meter (3 feet) or more
• B. About 2 meters (6 feet)
• C. About 0.5 meter (1.5 feet)
• D. About 4 meters (12 feet)

Answer: (A)

In a typical Dual-energy X-ray Absorptiometry (DXA) scan, the operator should stand about 1 meter (3 feet) or more from the x-ray source to ensure safety. This distance is important as it helps reduce exposure to radiation while still allowing the operator to monitor the scan process effectively.

The 1 meter distance is in line with established radiation safety guidelines that direct healthcare professionals to maintain a safe distance from the radiation source whenever possible. Standing closer than this could increase the risk of radiation exposure to the operator, which is why this distance is recommended. Maintaining adequate distance is a fundamental principle in radiation safety, allowing for both patient care and operator protection during the procedure.