Nuclear cardiology is a technique for noninvasive evaluation of the heart, usually related to assessment for coronary artery disease and the pumping function of the heart. It is most commonly associated with stress testing, either exercise or with medication. With the use of Cardiolite, which is a common form of what we call perfusing agents, given with exercise and at rest, we are able to assess if any coronary artery blockages are present and how significant they are. We are also able to determine the pumping function of the heart at rest and following exercise. The radiation exposure involved is not felt to be a cause for concern.