| 基于形态学的自动QT间期检测方法的研究 |
| |
| 引用本文： | 余辉,杜非,张力新. 基于形态学的自动QT间期检测方法的研究[J]. 航天医学与医学工程, 2010, 23(1) |
| |
| 作者姓名： | 余辉 杜非 张力新 |
| |
| 作者单位： | 天津大学生物医学工程系,天津,300072 |
| |
| 基金项目： | “985”青年教师培养基金(TJU-YFF-08B44);;天津市先石光学技术有限公司博士后创新实践基地 |
| |
| 摘 要： | 目的本文针对当前移动监护平台的需要,研究并设计一种新的基于多尺度形态学导数变换的心电信号特征点自动识别算法,从而实现QT间期的检测。方法引入三角形和线段作为形态学变换的结构元素对对心电信号进行多尺度形态学导数变换(multi-scale morphological derivative transform,MMDT),根据波形的形态学特征将其分为4种情况,并针对每种情况分别设计最佳方案来对Q波起点进行检测。同时引入"翼"函数选取T波的2个参照点,辅助确定T波峰位置及其终点,使得MMDT方法在检测双峰T波(90.9%)和双相T波(86.7%)时的精度和识别率得到较大改善。结果本文采用了CSE数据库中的80个心电记录对算法进行评估,数据统计结果表明该算法与小波变换方法相比其整体误差及标准差更小,对非正相T波的检测性能大幅提高。结论相比小波变换和自适应阈值方法,该算法经验参数少,运算量低,非常适合用于移动监护和HOLTER系统,具有广阔的应用前景。
|
| 关 键 词： | QT间期检测 多尺度形态学导数变换 起点 终点 |
Research of Automatic QT Interval Detection Based on Morphological Method |
| |
| YU Hui,DU Fei,ZHANG Li-xin. Research of Automatic QT Interval Detection Based on Morphological Method[J]. Space Medicine & Medical Engineering, 2010, 23(1) |
| |
| Authors: | YU Hui DU Fei ZHANG Li-xin |
| |
| Affiliation: | YU Hui,DU Fei,ZHANG Li-xin.Department of Biomedical Engineering,Tianjin University,Tianjin,300072 |
| |
| Abstract: | Objective To study and design a new algorithm of QT interval measurement based on multi-scale morphological derivative transform(MMDT) according to the demands of mobile monitoring platform.Methods After the MMDT of ECG signals by inducing a triangle and a short line as a pair of structure elements,they were classified into four types by their morphological characteristics and the optimal strategy for each type was described to detect the onset of Q-wave.By introducing the wing function,two referenced point... |
| |
| Keywords: | QT interval measurement multi-scale morphological derivative transform onset offset |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
|
