Radioactivity After Nuclear Medicine Tests

Last Modified: January 7, 2013


For procedures in nuclear medicine or Interventional radiology where radioactive dyes or beads are used/injected, does that make a person radioactive? What precautions should be taken and for how long?


Katie Fanslau, RN, MSN, Nurse in Nuclear Medicine at Penn Medicine responds.

Yes, the injections in nuclear medicine make you radioactive, but precautions depend on what agent is being used. For diagnostic testing in nuclear medicine, there are no radiation safety precautions because there is only enough radiation given to image the patient. For nuclear therapies, the precautions given are dependent on the therapy and their respective half-lives (all radiation decays over time). For example, for I 131 MIBG therapy patients are advised to avoid prolonged close contact with people especially children and pregnant women for 7 days. There are also precautions related to your clothing, linens, showering, and toileting.

This question and answer was part of the OncoLink Brown Bag Chat Series. View the entire transcript from the Focus on Neuroendocrine Tumors Webchat.