al-Nashash H A, Kelly S W, Taylor D J
Med Biol Eng Comput. 1989 Jan;27(1):64-8. doi: 10.1007/BF02442171.
The detection of ventricular late potentials is a subject of some clinical interest. Most techniques currently being investigated rely on signal averaging to extract the microvolt signals from the considerable amounts of noise which are present. Although this approach produces useful results, it does remove any beat-to-beat variations from the signal, and also requires that the signal be present for a considerable number of beats. The paper describes a technique for detecting ventricular late potentials from the body surface, which preserves beat-to-beat variations. The most important aspect of this technique is the use of an adaptive signal enhancer to minimise random noise. Representative results for one normal and two pathological subjects are presented and discussed. A comparison with signal averaging is made and the effectiveness of adaptive signal enhancement is illustrated.
心室晚电位的检测是一个具有一定临床意义的课题。目前正在研究的大多数技术都依赖信号平均来从大量存在的噪声中提取微伏级信号。尽管这种方法产生了有用的结果，但它确实消除了信号中逐搏变化的部分，并且还要求信号存在相当数量的搏动。本文描述了一种从体表检测心室晚电位的技术，该技术保留了逐搏变化。该技术最重要的方面是使用自适应信号增强器来最小化随机噪声。给出并讨论了一名正常受试者和两名病理受试者的代表性结果。与信号平均法进行了比较，并说明了自适应信号增强的有效性。
