| 动物ECG信号关联维数动态变化的初步研究 |
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| 引用本文： | 王振洲,李政,魏义祥,宁新宝,林郁正. 动物ECG信号关联维数动态变化的初步研究[J]. 生物医学工程学杂志, 2004, 21(5): 836-839 |
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| 作者姓名： | 王振洲 李政 魏义祥 宁新宝 林郁正 |
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| 作者单位： | 1. 清华大学,工程物理系,北京,100084
2. 南京大学,电子科学与工程系,南京,210093 |
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| 摘 要： | 我们对动物 (兔子 )在麻醉后 3种不同病理情况下的标准同步 12导联心电信号 (Electrocardiogram,ECG)的关联维数 D2 的动态变化进行了初步的研究。研究结果表明 ,不论是在正常状态还是在急性心肌梗塞情况下 ,从不同体表位置提取的心电信号得出的关联维数并非一个常数 ,而具有分布特性。同一导联相比较 ,在急性心肌血范围扩大的情况下 ,肢体导联的 D2 基本不变 ,胸部各导联 ECG信号的 D2 值则呈升高趋势。D2 在冠心病的诊断中显示出潜在的应用。
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| 关 键 词： | 心电图 非线性动力学 关联维 心肌梗塞 |
A Primary Investigation on the Dynamic Changes of Correlation Dimension of Animal''''s ECG Signals |
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| Zhenzhou Wang,Zheng Li,Yixiang Wei,Xinbao Ning,Yuzheng Lin. A Primary Investigation on the Dynamic Changes of Correlation Dimension of Animal''''s ECG Signals[J]. Journal of biomedical engineering, 2004, 21(5): 836-839 |
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| Authors: | Zhenzhou Wang Zheng Li Yixiang Wei Xinbao Ning Yuzheng Lin |
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| Affiliation: | Department of Engineering Physics, Tsinghua University, Beijing 100084, China. wangzhenzhou@tsinghua.org.cn |
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| Abstract: | The dynamic changes of synchronous 12-lead ECG signal's correlation dimension(D 2) of an anesthetized rabbit were investigated primarily under three different pathologic conditions. The results showed that the D 2 derived from different lead signals was not a constant whether the rabbit was in normal state or in emergent myocardial infarction condition, it demonstrated distribution characteristic. Compared with the same lead signal, D 2 of limb lead almost kept constant, D 2 of chest lead got higher when the sphere of emergent ischemia extended larger. D 2 showed the potential application in the diagnosis of coronary heart disease. |
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| Keywords: | Electrocardiogram (ECG) Nonlinear dynamics Correlation dimension (D 2) Myocardial infarction |
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