Health
Fact-checked

At WiseGEEK, we're committed to delivering accurate, trustworthy information. Our expert-authored content is rigorously fact-checked and sourced from credible authorities. Discover how we uphold the highest standards in providing you with reliable knowledge.

Learn more...

What Is Nuclear Cardiology?

Mary McMahon
Mary McMahon
Mary McMahon
Mary McMahon

Nuclear cardiology applies advanced imaging techniques to the diagnosis of heart conditions. As the name implies, these techniques involve the use of radioactive isotopes to assess heart function and the supply of blood to the heart. Patients may require testing for a number of reasons; if they have symptoms of heart disease, if they need to be evaluated to see how they responded to treatment, or have risk factors for so-called “silent” heart disease, where symptoms don’t develop until the condition is quite advanced. Facilities with nuclear cardiology laboratories can offer testing on an outpatient and inpatient basis.

One of the most common tests used in this field is a myocardial perfusion study. The patient reports for testing and receives a small injection of a radioactive tracer material which is monitored with a gamma camera as it moves through the body while the patient is at rest. Next, the patient’s heart is stressed with exercise or medication to see how this affects changes in the supply of blood to the heart. Emissions from the tracer can be followed as they move through the heart muscle, showing whether some areas are not getting enough blood.

Nurse
Nurse

Other studies in nuclear cardiology can allow doctors to evaluate the blood vessels around the heart as well as the heart’s function. Radioactive isotopes typically have a short half-life, so risks are limited. The noninvasive nature of the test is particularly beneficial, as it provides a glimpse into the heart without subjecting the patient to the stress of surgery or invasive procedures. Facilities that don’t have the capacity for these kinds of studies may send patients to a partner institution for testing.

If a problem is identified on a nuclear cardiology scan, treatment options can vary. Patients may need to make diet or lifestyle changes to address the onset of silent heart disease. Medications or surgery might be required to treat other conditions. The best option can depend on the diagnosis, the patient’s medical history, and the experience of the doctor supervising the case. Further nuclear cardiology studies may be required to follow up after the patient receives treatment.

Direct patient care is not the only area of practice in nuclear cardiology. This field also includes research to improve the safety and efficacy of testing, as well as expand available test options and their applicability. Research and development can include bench laboratory work, clinical trials, and reviews in hospital and clinic environments.

Mary McMahon
Mary McMahon

Ever since she began contributing to the site several years ago, Mary has embraced the exciting challenge of being a WiseGEEK researcher and writer. Mary has a liberal arts degree from Goddard College and spends her free time reading, cooking, and exploring the great outdoors.

Learn more...
Mary McMahon
Mary McMahon

Ever since she began contributing to the site several years ago, Mary has embraced the exciting challenge of being a WiseGEEK researcher and writer. Mary has a liberal arts degree from Goddard College and spends her free time reading, cooking, and exploring the great outdoors.

Learn more...

Discuss this Article

Post your comments
Login:
Forgot password?
Register:
    • Nurse
      Nurse