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. Author manuscript; available in PMC: 2010 Aug 1.
Published in final edited form as: Heart Rhythm. 2009 Apr 15;6(8):1178–1185. doi: 10.1016/j.hrthm.2009.04.017

Figure 4.

Figure 4

Post-CRT ECGI activation isochrones in Patient #7 with two epicardial leads (white asterisks). Each panel shows the anterior (left) and inferior (right) views of the epicardial surface activation-map. Panels CRT-OPT, CRT-NOM, ANT-P and POST-P show the epicardial activation-isochrones during optimized CRT pacing, nominal CRT pacing, pacing from the anterior lead alone and pacing alone from the posterior lead alone, respectively. The optimized CRT settings yield the lowest electrical dyssynchrony (ED) index (or maximal synchrony of ventricular activation).