Myocardial perfusion imaging
Myocardial Perfusion Imaging (my-oh-CAR-dee-ul per-FEW-zhun IM-uh-jing) is a non-invasive diagnostic test used to evaluate the blood flow to the heart muscle (myocardium) and identify areas of reduced blood flow (ischemia) or scarring (infarction).
Etymology
The term "Myocardial Perfusion Imaging" is derived from the Greek words "myo" meaning muscle, "kardia" meaning heart, "per" meaning through, and "fusis" meaning nature. The term "imaging" is derived from the Latin word "imago" meaning picture or image.
Procedure
Myocardial Perfusion Imaging involves the injection of a small amount of radioactive tracer into the bloodstream. This tracer is taken up by the heart muscle in proportion to the blood flow. A special camera (gamma camera) then takes pictures of the heart, allowing doctors to see how well the blood is flowing to the heart and if there are any areas of reduced blood flow or scarring.
Related Terms
- Myocardium: The muscular tissue of the heart.
- Ischemia: A condition in which there is insufficient blood flow to the body's tissues.
- Infarction: Tissue death due to lack of oxygen supply, often caused by a blocked blood vessel.
- Gamma Camera: A device used to image gamma radiation emitting radioisotopes.
See Also
External links
- Medical encyclopedia article on Myocardial perfusion imaging
- Wikipedia's article - Myocardial perfusion imaging
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