Analysis of Normal and Pathological Fetal Magnetocardiograms Using Clustering Algorithms
Adam V. Adamopoulos, Basilis Boutsinas, Michael N. Vrahatis, Photios A. Anninos · 2001
ABSTRACT: In the present paper we propose a novel technique for the analysis of the fetal MagnetoCardioGram (f-MCG) in normal and pathological pregnancies. The f-MCG is a measure of the magnetic component of the electromagnetic fields emitted from the fetal heart, reflecting the underlying dynamics. The extremely weak magnetic fields emitted from the fetal heart can be recorded with the use of specific totally non-invasive Superconductive Quantum Interference Devices (SQUID). From a total of 10 considered cases, 5 were complicated and presented arrhythmia and 5 were normal. Recordings were performed at the late stage of pregnancy. The analysis of the collected signals is based on the reconstruction of the phase space form the one-dimension signals to higher-dimension phase space. An especially developed clustering algorithm is applied on the reconstructed data in order to investigate the distribution of the dynamics in the higher-dimension reconstructed phase space.