Title

A Cardiac Electro-physiological Model Based Approach for Filtering High Frequency ECG Noise

Document Type

Conference Proceeding

Language

eng

Format of Original

4 p.

Publication Date

9-30-2007

Publisher

Institute of Electrical and Electronics Engineers

Source Publication

Computers in Cardiology, 2007

Source ISSN

0276-6547

Original Item ID

doi: 10.1109/CIC.2007.4745433

Abstract

With an increasing focus on automatic diagnoses of cardiac disease through ECG signals, de-noising techniques that do not introduce artifacts have become necessary. This paper proposes a model based approach for removing high frequency noise from ECG signals. The proposed modeling technique is based on the propagation of the electric waves over the cardiac tissue. The proposed approach models the crucial nodes as a difference between two sigmoid functions. The ECG signal is modeled as the sum of the activity at the SA node, AV node, Bundle branches, Purkenji fibers, and right and left ventricles. The model is adapted to the targeted ECG signal using a nonlinear least squares optimization technique. The proposed filtering approach is applied to randomly selected ECGs from the long-term ST database. A quantitative analysis is performed on simulated ECG signals perturbed with white noise with ST signal to noise ratios ranging from -25 to 5 dB.

Comments

Published as part of the proceedings of the conference Computers in Cardiology, 2007: 109-112. DOI.