Nuclear Stress Test

What Is a Nuclear Stress Test?

A nuclear stress test—also called myocardial perfusion imaging—combines a stress test with specialized imaging to show how well blood is reaching the heart muscle. The test uses a small amount of radioactive tracer and a special camera to create detailed images of the heart. By comparing images taken at rest and during stress, cardiology specialists can evaluate whether parts of the heart are receiving enough blood flow.

This test is commonly used to assess suspected or known coronary artery disease and to evaluate overall heart performance when symptoms occur with activity.

How a Nuclear Stress Test Is Performed

During the test, a tracer is injected into a vein, and images of the heart are taken with a specialized camera. The “stress” portion is created either through exercise (walking on a treadmill) or with medication that simulates the effects of exercise for patients who cannot exercise adequately.

After stress is achieved, additional tracer may be given and a second set of images is taken. Your heart rhythm, blood pressure, and symptoms are monitored throughout the process to ensure safety and collect accurate information.

When a Nuclear Stress Test May Be Recommended

A nuclear stress test may be recommended for patients with chest pain, shortness of breath, unexplained fatigue, or reduced exercise tolerance—especially when symptoms may be related to reduced blood flow to the heart. It is also used to evaluate suspected coronary artery disease, assess the severity of known blockages, or help determine whether current treatment is working.

In some cases, nuclear stress testing may be used to evaluate cardiac risk before certain procedures or to guide decisions about additional diagnostic or interventional care.

What the Test Can Reveal

Nuclear stress testing can help identify areas of the heart that are not receiving adequate blood flow during stress, which may suggest coronary artery narrowing or blockage. It can also provide information about prior heart damage and overall pumping function.

These results help your cardiology team make informed decisions about next steps, which may include lifestyle recommendations, medication management, or further evaluation.

Benefits of Nuclear Stress Testing

A nuclear stress test provides detailed, functional information that may not be visible on standard tests alone. It can help detect coronary artery disease early, clarify the cause of symptoms, and support personalized treatment planning.

Because it evaluates the heart under stress, the test often provides valuable insight into real-world heart performance during daily activity.

Nuclear Stress Testing at New Beats Cardiology

At New Beats Cardiology, nuclear stress testing is performed with a focus on patient comfort, safety, and accuracy. Our team uses advanced protocols and clear communication to help you understand your results and the next steps in your cardiovascular care plan.