According to NCRP regulations, what is the maximum allowable leakage radiation from the x-ray tube?

The maximum allowable leakage radiation from the x-ray tube, as specified by the National Council on Radiation Protection and Measurements (NCRP), is 100 mR/hour measured at 1 meter from the tube housing. This standard is established to ensure that radiation exposure to personnel and the environment is kept within safe limits.

The reason this standard is set at 100 mR/hour is to balance the benefits of imaging procedures with safety considerations for both patients and healthcare workers, reducing the risk of unnecessary radiation exposure. This regulation helps maintain a safe working environment by ensuring that any radiation emitted from the x-ray tube does not exceed a level that could pose a significant health risk.

Options that suggest different maximum levels, such as 50 mR/hour, 200 mR/hour, or 150 mR/hour, do not align with the established NCRP guidelines and therefore would not serve as acceptable limits for leakage radiation from x-ray tubes.