What Is A Nuclear Medicine Stress Test?
A Nuclear Treadmill stress test is similar to a standard treadmill stress test, but provides the doctor with additional information by using an isotope (Thallium) to evaluate coronary blood flow. This test is performed in three phases with each phase lasting 15-30 minutes. An intravenous (IV) line will be started in order to inject a very small dose of the isotope before the first set of pictures. A special camera will take pictures of the heart. This usually lasts 20-30 minutes. The patient will lie flat with both arms above his head. These pictures help to show the specific area(s) of the heart that is not getting enough blood and oxygen. After the first set of pictures, the cardiologist will have the patient exercise on the treadmill, gradually increasing the speed and incline. This may last for up to 15 minutes depending upon the patient’s level of ability. At the peak of exercise, the tech will inject another small dose of isotope through the IV site. The isotope is not harmful to
