Figure 4 . Representative examples of sites with spatiotemporal dispersion and non-continuous fractionation (dotted lines). Arrows represent hypothetical trajectory of a meandering rotor core. Upper panel: IntellaMap ORION catheter. Middle panel: PentaRay NAV catheter (PR). Lower panel: Advisor HD Grid catheter. Paper speed: 200 mm/s. ORB = Woven Orbiter catheter; blue bipoles around tricuspid annulus and green bipoles into the coronary sinus.