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All Necessary Examinations for Coronary Heart Disease

Rest ECG
Advantages: noninvasive, re-usable, convenient and inexpensive.
Disadvantages: poor sensitivity and specificity; only able to reflect temporary heart condition; unable to find the problem if the patient behave normally during the checking process; fail to diagnosis sometimes.
Exercise EKG Stress Testing
Advantages: noninvasive, able to induce myocardial ischemia attack so as to achieve better diagnosis even there is nothing wrong with the Rest ECG; practical for the patients with angina pectoris caused by continual strain.
Disadvantages: cannot be tested with the aged and patients with movement disorders.
Coronary Angiography
Advantages: effective in diagnosing coronary artery disease and reflecting areas of involvement; able to show the details of stenosis clearly if there is any.
Disadvantages: invasive, only reflect the lumen contour of the contrast agent-related areas; fail to show the situation of atheromatous plaque, unable to find early lesions and judge the stability of plaque.
64-Slice Spiral CT
Advantages: noninvasive, able to judge coronary artery disease based on vessel calcification imaging; highly sensitive and specific; able to be used as screening method; accurate negative predictive.
Disadvantages: higher demands on the heart rate (below 70/min at present)
Costs: around 1000 RMB.
Intravascular Ultrasound
Advantages: clearly show the histological features of coronary artery wall through ultrasound imaging; able to find early vascular lesions and judge the stability of atherosclerotic plaque.
Disadvantages: invasive, expensive.
Costs: around 10000 RMB.
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