In which location is radioxenon permitted to be administered?

The correct choice is that radioxenon must be administered only in imaging rooms that can be negatively pressurized. This requirement is critical due to the properties of radioxenon, which is a radioactive gas used in nuclear medicine, particularly for lung ventilation imaging.

Negative pressure in the room ensures that any potential leakage of the radioactive gas is contained within the room. This safety measure protects both the personnel administering the procedure and other individuals in the vicinity from unnecessary exposure to radiation. By maintaining a negative pressure environment, the flow of air is directed inward, preventing the gas from escaping to other areas of the facility.

Other considerations, such as utilizing rooms with xenon alarm systems, having a G-M detector, or simply having a room that can be closed off, do not address the specific safety and containment needs associated with handling radioxenon. While detection is important, the focus during administration should be on ensuring that the environment is controlled to prevent the spread of radioactive materials, which is why negative pressurization is the preferred standard in this case.