Zywietz C, Willems J L
Medical School, Hannover, Germany.
J Electrocardiol. 1987 Oct;20 Suppl:61-7.
As a measure for performance of ECG computer programs, systematic noise tests have been performed within the European project Common Standards For Quantitative Electrocardiography. Ten original and ten artificial VCG and ECG records (the artificial records were constructed from one beat of the original ones) without and with added noise were processed by eight ECG programs and by five VCG programs. Three lowpass filtered high frequency noise levels, line frequency noise and three baseline noise levels were added to the original records. The processing results for the noise-free and for the noisy records have been analyzed in the CSE coordinating center. Results presented in this study refer to the amplitude differences obtained after comparison of results from noise-free and noisy ECG records. Increasing high frequency noise results in overestimation of peak amplitudes and increased variability of measurements.
作为心电图计算机程序性能的一项衡量措施，在欧洲项目“定量心电图通用标准”中进行了系统噪声测试。八个心电图程序和五个心向量图程序对十份原始和十份人工心向量图及心电图记录（人工记录由原始记录中的一个心动周期构建而成）进行了处理，这些记录分为无附加噪声和有附加噪声两种情况。向原始记录中添加了三种低通滤波后的高频噪声水平、工频噪声和三种基线噪声水平。无噪声和有噪声记录的处理结果在CSE协调中心进行了分析。本研究给出的结果指的是无噪声和有噪声心电图记录结果比较后得到的幅度差异。高频噪声增加会导致峰值幅度高估以及测量变异性增加。
