Development of an individually corrected vectorcardiographic lead system

Vectorcardiography is a technique focused on the spatial representation of the cardiac vector. Many vectorcardiographic systems have been proposed over the years, and Frank´s lead system is the most extended one. Frank´s system uses orthogonal lead axis corrected by fixed coefficients. We propose a novel vectorcardiographic lead system based on Jouve´s theories, where correction coefficients are computed for each patient according to electrical measurements taken over the body surface. First, the centre of symmetry (O point) is obtained by the estimation of the whole body surface voltage distribution. This O point is considered to be the electrical origin of the cardiac vector and any orthogonal axis system centred on it can be used. Correction coefficients for any lead system are then computed from the amplitude ratios found on the body. This system does not use approximations of correction coefficients as proposed by Frank and other author and so, it appears to be a more accurate representation of the electrical cardiac vector