This camera provides images that physicians review to evaluate the heart's blood flow or heart attack damage. A diagnostic technique using ultrasound waves that may be performed while the patient is either resting or exercising. A graphic tracing of the heart's electrical activity, used in diagnosing some heart abnormalities. Also known as an exercise tolerance test. Myocardial ischemia Deficiency of oxygen-carrying blood in an area of heart tissue due to blockage of the coronary arteries.
Myocardial ischemia can cause angina , which is painful.
Without intervention, myocardial ischemia can lead to a heart attack. Perfusion defects Areas of reduced blood flow on a cardiac perfusion image that indicate cardiac disease.