Open AccessMagnetocardiac signal analysis based on multiple time windows beamformer method
Author(s) -
Weiyuan Wang,
Jiang Shi-Qin,
Zhou Da-Fang,
Zhu Jia-Chen,
Yan Yu-Rui,
Weiwei Quan
Publication year - 2014
Publication title -
wuli xuebao
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.199
H-Index - 47
ISSN - 1000-3290
DOI - 10.7498/aps.63.248702
Subject(s) - qrs complex , magnetocardiography , computer science , signal (programming language) , algorithm , channel (broadcasting) , block (permutation group theory) , bundle , acoustics , telecommunications , mathematics , physics , materials science , cardiology , medicine , programming language , geometry , quantum mechanics , composite material
A beamformer method based on multiple time windows is proposed to estimate the equivalent current sources of different strength and duration from multi-channel magnetocardiography data. This technique of visualizing cardiac electric activities will be a great help to the diagnosis of relevant heart diseases. Feasibility of this beamformer method has been proved by simulation experiments of two known sources. Source estimation results and two-dimensional excitation propagation diagrams of a complete left bundle branch block and a complete right bundle branch block patients during QRS complex are taken to be compared. The revealed characteristics of their electrophysiological phenomena are analyzed.