Files in this Data Supplement:

• Figure I - (Microsoft PowerPoint) (59.5 kb). Comparison of activation times measured from the actual contact electrogram (x-axis) to that of the estimated non-contact virtual electrogram (y-axis). Activation time points were determined as the point of maximal negative dV/dt. Panel A shows the activation time points during sinus rhythm, and Panel B shows the activation time points during ventricular fibrillation.
• Figure II - (Microsoft PowerPoint) (68.5 kb). Conduction velocity (Panel A), size of the rotor core (Panel B), and the correlation between conduction velocity and rotor core size (Panel C) for each of the canine models. In Panel C, a linear curve fit was applied to the control data.
• Movie I - (QuickTime Movie) (55 MB). Activation movie (isopotential movie) during an episode of VF in a Control dog. White indicates depolarization. The activation is characterized by a reentrant rotor, but the core is not stable and moves around the wall of the posterior LV. A surface ECG is shown and the portion of VF in which the movie was made is outlined by the white box.
• Movie IIA - (QuickTime Movie) (47.3 MB). A series of activation movies from an episode of VF in an acute ischemia dog. Movie A is from the initial stages of the VF and a focus is shown in the posterior LV.
• Movie IIB - (QuickTime Movie) (48.3 MB). Movie B shows the reentry that was transitioned into from the focal activation.
• Movie IIC - (QuickTime Movie) (48.5 MB). Movie C is an example of the reentrant rotor breaking and reforming in the same location, but rotating in the opposite direction.
• Movie IID - (QuickTime Movie) (32 MB). Movie D is an example of Figure 8 reentry from the later stages of the VF.
• Movie IIIA - (QuickTime Movie) (42.7 MB). Activation movies from two different episodes of VF in two different CHF animals. Movie A shows an example of focal activation that is initiated in the lower LV posterior wall near the apex.
• Movie IIIB - (QuickTime Movie) (44.5 MB). Movie B shows and example of stable reentry.
• Movie IVA - (QuickTime Movie) (17 MB). Dominant frequency and organization movies from the sliding 2-second window during an episode of VF from each of the animal models. Movie A – Control.
• Movie IVB - (QuickTime Movie) (23.1 MB). Movie B - Acute Ischemia.
• Movie IVC - (QuickTime Movie) (34.2 MB). Movie C - CHF.