FERENIEC , Malgorzata

Recent mathematical methods, dealing with shape analysis and shape clustering are presented. The advantage of taking signal shape into account is shown in an application to High Resolution ECG Mapping: the spatial dispersion of the ECG waves recorded with a 64 lead device, and mainly the T-wave, is well correlated with the presence of...

The aim of this study was to investigate the variability of P wave morphology recorded in a close distance to precordial ECG leads. The study consisted of 60 cardiac patients. The ECG signals interpolated at points located at a distance up to 7 cm from the precordial lead location were compared to signals recorded from precordial leads. The...

The aim of this study was to investigate the variability of P wave morphology recorded in a close distance to precordial ECG leads. The study consisted of 60 cardiac patients. The ECG signals interpolated at points located at a distance up to 7 cm from the precordial lead location were compared to signals recorded from precordial leads. The...

An increased beat to beat variability of ECG waves shapes (mainly QRS), along the time, has yet been observed in patients with some pathological cardiac conditions. The aim here is to present a method to measure spatial shape variability of ECG waves recorded, at a fixed time, from a Body Surface Potential Mapping (BSPM) device with 64...

The spatial distribution of the shape of the electrocardiography (ECG) waves obtained by body surface potential mapping (BSPM) is studied, using a 64-channel high-resolution ECG system. The index associated to each lead is the shape difference between its ECG wave and a reference computed taking into account all the leads on the same column....

Time and spatial inhomogeneity of the repolarization phase is considered to be an important, non invasive indication of sudden cardiac death in patients after myocardial infarction. Analysis of spatial variability of the repolarization phase was carried out on signals recorded with the 64-channel system for measurement of high-resolution ECG....