الفهرس 
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Abstract
Nuclear imaging techniques include an extensive range of investigations for the assessment of cardiac diseases. The most important are the assessment of myocardial perfusion, the identification of myocardial infarction, the measurment of myocardial metabolism and the measurment of ventricular function. Myocardial perfusion imaging: The myocardial perfusion nnagrng reveal the functional consequence of an anatomic coronary artery stenosis demonestrated by coronary arteriography. It is used in patients with known ischemic heart disease for assessing the significance of coronary stenosis, extent and distribution of disease and myocardial viability. It also exclude ischemic heart disease in patients with a false-positive exercise test. The current available single-photon tracers including thallium-20 1 and the newer technetium-labelled agents are imaged with either planar or SPECT techniques. Interpretation of abnormal myocardial Images IS based on comparison of the stress and redistribution or rest studies. Segmental decrease in uptake after stress image indicate the presence of either myocardial ischemia or scarring, later redistribution or rest image demonestrate persistant defects if myocardial scarring is present. Pm1{’ NfJ sn