The 64 channel system for high resolution ECG mapping

The purpose of this work was an improvement of the heart micropotential measurements and analysis by the simultaneous use of two non-invasive methods: body surface mapping and high-resolution electrocardiography. Software for body surface mapping and multi-lead high-resolution ECG analysis was developed. An analysis of the QRS duration and the energy of a 25-ms interval in a terminal QRS complex was applied both for each single lead and for an orthogonal X,Y,Z lead system. Results were visualized on a 3D torso. Preliminary recording was carried out on three normal subjects and on three myocardial infarction patients.