What is a nuclear exercise stress test?

A nuclear exercise stress test is a diagnostic test used to evaluate blood flow to the heart. During the test, a small amount of radioactive tracer is injected into a vein. A special camera, called a gamma camera, detects the radiation released by the tracer to produce computer images of the heart.

Combined with exercise, the test can help determine if there is adequate blood flow to the heart during activity versus at rest.

References

This information is about testing and procedures and may include instructions specific to Cleveland Clinic. Please consult your physician for information pertaining to your testing.

Reviewed: 12/14