nuclear medicine studies
Nuclear Heart Scans use a special Gamma camera to take pictures of tissues and the heart after a radioactive tracer is put into a vein in the arm and is absorbed by the tissues. The tracer allows the camera to see the activity and function of the tissues and heart.
Patrick J. Lynch, medical illustrator, Heart spect imaging, CC BY 2.5
A treadmill stress test with Myocardial Perfusion Imaging or Cardiolite is an exercise stress test that can be done in conjunction with nuclear imaging to increase the sensitivity of the test. This test uses a short-lived radioactive material, which along with computer imaging will help highlight any severely diseased blood vessels that may be causing diminished blood flow to the heart.