What is the limit for leakage radiation from the x-ray tube at 1 meter?

The correct limit for leakage radiation from the x-ray tube at a distance of 1 meter is 1 milligray/hour. This standard is established to ensure safety for both medical staff and patients as they work around x-ray equipment.

This limit is crucial for minimizing unnecessary exposure to radiation, which could lead to potential health risks over time. Regulatory bodies such as the National Council on Radiation Protection and Measurements (NCRP) have determined that maintaining this threshold helps to provide adequate protection while still allowing for the benefits of diagnostic imaging procedures.

Other options exceeding this threshold, such as 2 milligray/hour, 5 milligray/hour, or 10 milligray/hour, would raise concerns regarding safety protocols and patient care, as they imply a higher allowance for radiation that does not align with best practices for protecting individuals from excess exposure.