What to expect having nuclear ex-rays and nuclear treadmill?

During a nuclear stress test, you'll receive a small amount of radioactive material through an IV, which allows images of your heart to be taken. After resting images are captured, you'll walk on a treadmill to increase your heart rate, and additional images will be taken afterward. The procedure is generally safe and helps assess blood flow to the heart during exercise. You may experience mild side effects, such as fatigue or a racing heart, but these usually resolve quickly.