Figure 3 . Representative examples of rotors (dotted lines). Upper panel and middle panel: IntellaMap ORION catheter; rotors detected in a single bipole. Lower panel: Advisor HD Grid catheter; rotor detected in 2 adjacent bipoles (D1-D2 and D2-D3). Note the low voltage of electrical signals in the middle and lower panel. Paper speed: 200 mm/s. ORB = Woven Orbiter catheter; blue bipoles around tricuspid annulus and green bipoles into the coronary sinus.