Accurate instrumentation for heart disease First of all for coronary heart disease, coronary angiography is the most accurate and the gold standard for diagnosis of coronary heart disease, as well as coronary CTA. Secondly, if it is an arrhythmia type of heart disease, 24-hour ambulatory electrocardiogram is the most common and common accurate test to further clarify the type of arrhythmia. Then for supraventricular tachycardia, ventricular tachycardia, and other such types of arrhythmias, electrophysiological examinations are also required, which can find the site of the abnormality and be useful for ablation and radical treatment. In addition, patients with heart valve disease and precordial disease can be diagnosed and treated with precise echocardiography. Finally, in patients with cardiomyopathy, echocardiography, cardiac MRI and myocardial biopsy are more accurate tests; in patients with myocarditis, viral antibody tests are more accurate tests; in patients with pericarditis, echocardiography and pericardial puncture can be used to achieve accurate tests and determine the diagnosis.