The full name of the myocardial perfusion SPECT study is myocardial perfusion Single Photon Emission Computed Tomography study. It is also known as a cardiac stress-rest test, which is used to evaluate the heart's blood supply.
There are two sets of images combined together to show blood flow. The first group follows a period of rest and the second follows a period of stress. For instance, running on a treadmill is one of the choices as a kind of stress for participants before the second test.
The technologist will inject a radiotracer into a vein. The radiotracer includes a radioactive isotope and a pharmaceutical agent. A radioactive isotope helps the technologist to track in the blood with the energy released by itself until it is filtered out by the kidneys.
The myocardial perfusion SPECT study is mainly used for heart disease like myocardial infarction (heart attack) and myocardial ischemia (reduced blood flow due to obstruction in the vessels).