一种适用于Holter系统的ST段分析方案

A New ST Segment Analysis Scheme for Holter System

提出一种ST段分析方案用于辅助医生的快速读图和诊断。采用中值滤波方法拟合和提取基线 ,进而消除基线漂移。利用顺序统计滤波器去除高频噪声 ,采用小波分析方法进行QRS主波的定位和检测 ,交互式方法定位ST段起点和终点 ,估计所截取的ST段与基线值之间的平均偏差 ,做出ST段偏移量的整体趋势图。回放系统可以使医生根据ST段整体趋势图 ,任意选取想要看的原始ECG信号 ,达到辅助医生快速读图和诊断的目的。

A new ST segment analysis scheme is developed for he lp ing the doctors to browse the electrocardiogram (ECG) signals rapidly and then g ive a correct diagnosis. The preprocessing consists of baseline wander attenuati on using median filter, high frequency noise rejection using order statistic fil ter, and then QRS complexes detection using wavelet analysis. In this paper, aft er the beginnings and the ends of the ST segments are mutually chosen by doctor, we compute the total deviations between ST segments and the modified baselines using mean value, and then plot the whole trend of the deviations. Doctors can b rowse the original ECG signals handily by our browsing system, and then give a d iagnosis colligating other clinic features of the patient.