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采用分布式多传感器（电极）研究了同步12导联常规心电信号（electrocardiogram,ECG）的Lyapunov指数谱（Lyapunov spectrum）.研究结果表明,不论健康人还是具有窦性节律的冠心病人（coronary artery disease,CAD）,从不同位置提取的心电信号得出的Lyapunov指数并非一个常数,而具有分布特性.所有导联的ECG信号的最大Lyapunov指数L1均为正数,其余指数为负,心电信号表现出明显的混沌特征.同一导联相比较,冠心病人的L1低于健康正常人的L1,L1可以将冠心病人与健康正常人区分开来,在心脏疾病诊断中具有潜在的应用价值.
A distributed multisensor (electrode) was used to study the Lyapunov spectrum of a synchronized 12-lead electrocardiogram (ECG). The results showed that coronary artery disease in both healthy subjects and patients with sinus rhythm artery disease (CAD)), the Lyapunov exponents obtained from the ECG signals extracted from different locations are not constant but distributed, the maximum Lyapunov exponent L1 of ECG signals of all leads is positive, and the rest are negative and heart Electrical signals showed obvious chaos characteristics.Compared with the same lead, coronary heart disease patients with L1 lower than normal healthy people L1, L1 coronary heart disease can be distinguished from healthy people, in the diagnosis of heart disease has the potential Value.