CAJ | 학술논문

目的:用一种精确有效的方法实现T波终点检测.方法:对心电信号进行小波变换,定位R波后,通过准确地定位T波的检测区间,避免心率和P波的影响,在确定的区间上根据模极值检测出所有T波的顶点,用一种简单实用的几何方法检测出T波的终点.将本文的算法用于QT数据库中,评价实验结果.结果:本文的算法标注能力为(-0.35225～±18.5869)ms,达到甚至超过了QT数据库里专家手工标注的水平.结论:文中采用T波终点检测的方法在存在噪声和基线漂移以及T波形态多变的情况下鲁棒性都比较好,并且计算简单,易于实现.
목적:용일충정학유효적방법실현T파종점검측.방법:대심전신호진행소파변환,정위R파후,통과준학지정위T파적검측구간,피면심솔화P파적영향,재학정적구간상근거모겁치검측출소유T파적정점,용일충간단실용적궤하방법검측출T파적종점.장본문적산법용우QT수거고중,평개실험결과.결과:본문적산법표주능력위(-0.35225～±18.5869)ms,체도심지초과료QT수거고리전가수공표주적수평.결론:문중채용T파종점검측적방법재존재조성화기선표이이급T파형태다변적정황하로봉성도비교호,병차계산간단,역우실현.
Purpose: To realize the detection of T-wave end with an efficient and accurate method. Methods: R-wave was lo-cated using wavelet transforming, and then the T-wave detection interval was identified accttrately by avoiding the influence of heart rate and P-wave. In addition, T-wave peaks were determined referring to the modulus maxima in the interval. Based on these, the T-wave end was located with a simple and practical geometrical method, which was applied for the evaluation of QT database. Results: The positioning capability of the above-mentioned method reached to (-0.35225±18.5869) ms which was comparable or even better than those manual annotations from QT database by cardiologists. Conclusions: The experimental results showed that our algorithm for T-wave end detection is robust to noise, baseline drift and waveform morphological varia-tions, and easy to calculate and to realize.