信号叠加改进了体表高放大心电的分辨力,计算机数字信号、图像处理技术的应用更新了心电的分析手段,为心脏无创伤检查提供又一新技术。由于高分辨心电图或体表平均心电图的概念,不能完整反映这一新技术,因而我们选用心电高分辨叠加检查这一术语,以概括体表心电的高增益放大、信号叠加及其计 The signal superposition improves the resolving power of the body surface high magnification electrocardiogram. The application of computer digital signal and image processing technology updates the analysis method of electrocardiogram and provides another new technique for heart noninvasive examination. Due to the concept of high-resolution ECG or body surface mean ECG can not completely reflect this new technology, so we use the high-resolution ECG overlay check the term to summarize the body surface ECG high-gain amplification, signal superposition and its meter