Technical Approach
This global vector-based algorithm was first reported by Anter et al.4 and has several components. First, the algorithm quantifies AT activation globally within the chamber, and uses these data to modify annotation of individual electrograms to produce a physiologically plausible final map. Second, the algorithm presents maps of vector propagation, that can differentiate focal or reentrant propagations from dead-end pathways, and of conduction velocity, that can identify slow conducting isthmuses of reentry. Finally, the authors write that the resulting activation map is independent of the mapping window, and displays color coded isochrones without predefined early and late activation (figure 1 from Anter et al. 4)