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Figure 3 Another example of a patient in the ARVD group. The electroanatomic maps, shown from the right anterior oblique view, depict the three-dimensional spatial dispersion of the unipolar electrogram’s amplitude (left panel), duration (middle panel) and amplitude/duration ratio (right panel). Note that the dysplastic region (red area in the maps) can be identified by the electrogram’s abnormally low amplitude (red indicates <3 mV), prolonged duration (red indicates >85 ms) and low amplitude/duration ratio (red indicates <0.05).