A brachytherapy source is considered leaky if the wipe test indicates an activity exceeding what threshold?

A brachytherapy source is determined to be leaky based on the results of a wipe test that indicates a specific level of radioactivity. The threshold for considering a source leaky is set at 185 Bq. If the wipe test reveals contamination above this level, it suggests that the radioactive material is not securely confined within the source, which poses a potential risk for radiation exposure to patients, staff, and the environment.

Being familiar with radioactive contamination limits is essential in ensuring safety protocols are followed. The 185 Bq threshold is particularly relevant as it aligns with regulatory standards that help maintain the safety of patients undergoing brachytherapy, as well as healthcare professionals who administer these treatments. When wipe tests exceed this limit, it triggers a series of responses including further investigation, potential source replacement, and enhanced surveillance of the area to mitigate contamination risks.