Fig. 2 shows the four 3M repositionable Ag/AgCl gel electrodes placed for performing the ICG recording according tothe Sramek configuration [15]. Two electrodes are placed onthe right lateral part of the neck, and two electrodes are placed the left side of the thorax. The ECG electrodes were placed inwrist and ankles according to Einthoven triangle with a fourthelectrode as right leg-driven.