Franchi D, Palagi G, Bedini R
CNR Institute of Clinical Physiology, Pisa, Italy.
Comput Biomed Res. 1994 Feb;27(1):68-80. doi: 10.1006/cbmr.1994.1008.
The system is composed of an electronic circuit, connected to a PC, whose outputs, starting from ECGs digitally collected by commercial interpretative electrocardiographs, simulate virtual patients' limb and chest electrode potentials. Appropriate software manages the D/A conversion and lines up the original short-term signal in a ring buffer to generate continuous ECG traces. The device also permits the addition of artifacts and/or baseline wanders/shifts on each lead separately. The system has been accurately tested and statistical indexes have been computed to quantify the reproduction accuracy analyzing, in the generated signal, both the errors induced on the fiducial point measurements and the capability to retain the diagnostic significance. The device integrated with an annotated ECG data base constitutes a reliable and powerful system to be used in the quality assurance testing of computer electrocardiographs.
该系统由连接到个人电脑的电子电路组成，其输出从商业解释性心电图仪数字采集的心电图开始，模拟虚拟患者的肢体和胸部电极电位。适当的软件管理数模转换，并将原始短期信号排列在环形缓冲区中，以生成连续的心电图轨迹。该设备还允许在每个导联上分别添加伪迹和/或基线漂移/偏移。该系统已经过精确测试，并计算了统计指标，以通过分析生成信号中基准点测量产生的误差和保留诊断意义的能力来量化再现精度。与带注释的心电图数据库集成的该设备构成了一个可靠且强大的系统，可用于计算机心电图仪的质量保证测试。
