Abstract：Selective coronary angiography is regarded as a gold standard for the diagnosis of coronary atherosclerotic cardiopathy(coronary heart disease), but not all the hospitals are qualified for the testing, and additionally, it is risky in some extent and relatively expensive. At present, non-invasive-testing methods for diagnosis of coronary heart disease include electrocardiogram(ECG), ambulatory electrocardiography, and treadmill exercise test, especially surface ECG which is convenient, rapid and low cost, and shows characteristic changes in cases of stable angina pectoris, acute coronary syndrome, etc. At the occurrence of acute myocardial infarction, culprit vessels position can be prejudged through ECG changes, and therefore surface ECG is vital in diagnosing coronary heart disease.
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2015, Vol. 24 
