Answer to Question #11454 Submitted to "Ask the Experts"
The following question was answered by an expert in the appropriate field:
My wife is six weeks pregnant. She lives in the same house with her mother, who had a radionuclide stress test. Are there any precautions we should take? Will the amount of radiation her mother received affect the surroundings and the baby?
The radiation will not affect the surroundings or the baby. You mentioned a stress test, so we know that the radionuclide used to do that test would be gone from her mother in a few hours (the radionuclide was probably technetium-99m [99mTc]). And even during the few hours when a little bit of radioactivity might still remain, it is not enough to cause any harmful effects.
The baby will not be affected by your wife living with her mother after her mother's stress test.
Certified Medical Health Physicist