For your PET scan, a radioactive drug (tracer) will be put into your body. Because the amount of radiation you're exposed to is small, the risk of negative effects from it is low. But the tracer might:

  • Cause a major allergic reaction, in rare instances
  • Expose your unborn baby to radiation if you are pregnant
  • Expose your child to radiation if you are breast-feeding

Talk with your doctor about the benefits and risks of a PET scan.