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Glossary

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Magnetic Resonance Imaging (MRI)
High-resolution imaging technique that is performed without use of radiation or injection of contrast medium. Valuable for obtaining images of the heart, large blood vessels, brain and soft tissues.

Mammary
Region surrounding nipple and breast.

Medial
Relating to the middle or center, nearer to the median or midsagittal plane.

Minimally Invasive Bypass Surgery
A less invasive procedure than traditional bypass surgery to create a path for blood to flow around a clogged artery usually performed without use of the heart-lung machine.

Mitral
Referring to the bicuspid valve separating the left atrium and ventricle to prevent back flow into the atrium during ventricular systole.

Multivessel Disease
Disease in two or more of the coronary arteries.

Myocardial Infarction (MI) (Heart Attack)
Damage to the heart muscle caused by occlusion of one or more of the coronary arteries.

Acute MI—An acute process of myocardial ischemia with sufficient severity and duration to result in permanent myocardial damage.

Myocardial Ischemia
The deficiency of blood supply to the heart due to the obstruction or constriction of coronary arteries.

Myocardium
The muscular wall of the heart located between the inner endocardial layer and the outer epicardial layer.

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