Geometrical aspects of the inter-individual variability ofmultilead ECG recordings

摘要

The ECG as measured from healthy subjects shows considerableinter-individual variability. This variability is caused by geometrical,as well as by physiological factors. A correction method for thevariability due to the geometrical causes is proposed. In this method,the electrical heart activity is computed from the ECG in a realisticgeometrical model. Subsequently, the electrical heart activity istransferred to a standard geometry and the resulting ECG is computed. Inan evaluation study using simulated ECG data the inter-individualrelative variability (RV) of the multilead ECG data was reduced from0.40 to 0.06. Applied to measured ECG data so far no reduction could beobtained