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基于多重分形去趨勢漲落的心室纖顫和心動過速分析

Detection of Ventricular Tachycardia and Fibrillation Based on Multifractal Detrended Fluctuation Analysis

作者: 謝佳興    王俊 
單位:南京郵電大學(xué),圖像處理與圖像通信江蘇省重點實驗室(南京210003)
關(guān)鍵詞: 心動過速;心室纖顫;多重分形;去趨勢漲落分析 
分類號:
出版年·卷·期(頁碼):2011·30·5(490-495)
摘要:

本文運用多重分形去趨勢漲落的分析方法,研究心動過速、心室纖顫和正常心電信號的多重分形特
征,用以有效區(qū)分上述三種信號。通過分析心動過速、心室纖顫和正常心電信號的赫斯特指數(shù)、Renyi指
數(shù)和多重分形譜,得出三種信號都具有不同程度的長程相關(guān)性和多重分形特性,在波動函數(shù)的階數(shù)大于0
時,三種信號的長程相關(guān)特性區(qū)別明顯。通過分析多重分形譜,發(fā)現(xiàn)心室纖顫的多重分形譜比心動過速
的多重分形譜寬,正常心電信號的多重分形譜最小。以上研究結(jié)果將對臨床醫(yī)學(xué)診斷識別心動過速和心
室纖顫號信號有很好的借鑒意義。

In this paper,multifractal detrended fluctuation analysis method was used to
analyze the multifractal characteristics of the ventricular fibrillation(VT)signals,the
ventricular tachycardia(VF)signals and the normal electrocardiograph(ECG)signals,which
was used to distinguish three kinds of signals effectively.By analyzing the Hurst index,
Renyi index and multifractal spectrum,it was found that there were degrees of long-range
correlation and multifractal characteristics among three kinds of signals,and when the
order of fluctuation function was positive,the three kinds of signals showed distinct
long-range correlation properties.To compare with the three signals' multifractal spectrum
,the width of the normal ECG signals’ spectrum was smallest,the VT signals’ was of the
second stronger fractality and the VF signals’ was of the biggest.This study provided good
reference for clinical diagnosing and distinguishing with VT and VF.

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