Objective To explore the application value of high frequency electrocardiogram in the diagnosis of coronary heart disease.
目的：探讨高频心电图在冠心病诊断中的应用价值。
It is difficult to gain stable and credible values of approximate entropy(ApEn) for original signals of short-term high frequency electrocardiogram(SHFECG).
对原始的短时高频心电图（SHFECG）作近似熵计算难以得到稳定、可信的估计值。
AIM: To compare the diagnostic value of body surface potential mapping (BSPM) and electrocardiogram (ECG) and high frequency ECG (HFECG) for coronary heart disease (CHD).
目的：比较体表电位标测(BSPM)、心电图(ECG)和高频心电图(HFECG)三种心电方法对冠心病(CHD)的诊断价值。
AIM: To compare the diagnostic value of body surface potential mapping (BSPM) and electrocardiogram (ECG) and high frequency ECG (HFECG) for coronary heart disease (CHD).
目的：比较体表电位标测(BSPM)、心电图(ECG)和高频心电图(HFECG)三种心电方法对冠心病(CHD)的诊断价值。
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