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. Author manuscript; available in PMC: 2018 Aug 1.
Published in final edited form as: JACC Clin Electrophysiol. 2017 Aug;3(8):894–904. doi: 10.1016/j.jacep.2016.12.017

Figure 4. Activation-recovery Interval (ARI) Maps.

Figure 4

Panels A to D: ARI maps for a normal control subject and 3 ERS patients. Maps are shown in anterior view and inferior view for each subject. ERS patients have regions with abnormally short ARI (dark blue). White arrows in Panels B-C point to regions with steep ARI gradients. Top two rows of Panel E show ECGI reconstructed electrograms (EGMs) from two adjacent location in each ERS patient. Location 1 (top row): prominent J-wave and short ARI; location 2 (middle row): absence of J-wave and normal ARI. There is a steep gradient of repolarization across these two locations. Bottom row of Panel E shows 3 EGMs from the normal subject, from locations marked in Panel A. The time instances of activation (AT; black square), recovery (RT; red square) and corresponding ARIs are indicated.