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基于经验模态分解(EMD)的自适应 ECG 噪声消除过程。

An Adaptive ECG Noise Removal Process Based on Empirical Mode Decomposition (EMD).

机构信息

Biomedical Engineering Department, College of Engineering, Al-Nahrain University, Baghdad 10072, Iraq.

Department of Medical Instruments Engineering Techniques, Dijlah University College, Baghdad 10021, Iraq.

出版信息

Contrast Media Mol Imaging. 2022 Aug 17;2022:3346055. doi: 10.1155/2022/3346055. eCollection 2022.

Abstract

The electrocardiogram (ECG) is a generally used instrument for examining cardiac disorders. For proper interpretation of cardiac illnesses, a noise-free ECG is often preferred. ECG signals, on the other hand, are suffering from numerous noises throughout gathering and programme. This article suggests an empirical mode decomposition-based adaptive ECG noise removal technique (EMD). The benefits of the proposed methods are used to dip noise in ECG signals with the least amount of distortion. For decreasing high-frequency noises, traditional EMD-based approaches either cast off the preliminary fundamental functions or use a window-based methodology. The signal quality is then improved via an adaptive process. The simulation study uses ECG data from the universal MIT-BIH database as well as the Brno University of Technology ECG Quality Database (BUT QDB). The proposed method's efficiency is measured using three typical evaluation metrics: mean square error, output SNR change, and ratio root mean square alteration at various SNR levels (signal to noise ratio). The suggested noise removal approach is compatible with other commonly used ECG noise removal techniques. A detailed examination reveals that the proposed method could be served as an effective means of noise removal ECG signals, resulting in enhanced diagnostic functions in automated medical systems.

摘要

心电图(ECG)是一种常用于检查心脏疾病的仪器。为了正确解读心脏疾病,通常更喜欢无噪声的 ECG。然而,心电图信号在采集和处理过程中会受到多种噪声的干扰。本文提出了一种基于经验模态分解的自适应 ECG 噪声消除技术(EMD)。该方法利用信号的固有特征来消除噪声,从而在最小失真的情况下去除 ECG 信号中的噪声。为了降低高频噪声,传统的基于 EMD 的方法要么抛弃初步的基本函数,要么使用基于窗口的方法。然后通过自适应过程来提高信号质量。仿真研究使用了来自通用 MIT-BIH 数据库和布尔诺技术大学心电图质量数据库(BUT QDB)的 ECG 数据。使用三个典型的评估指标来衡量所提出方法的效率:均方误差、输出 SNR 变化和不同 SNR 水平下的均方根比值变化(信噪比)。所提出的噪声消除方法与其他常用的 ECG 噪声消除技术兼容。详细的分析表明,所提出的方法可以作为一种有效的 ECG 信号噪声消除方法,从而提高自动化医疗系统的诊断功能。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/036b/9402333/dc9b6eaddba7/CMMI2022-3346055.001.jpg

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