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Figure 3 Example of phase analysis of equilibrium radionuclide-gated blood pool angiography in two patients. (Upper). Low dyssynchrony in both ventricles, interventricular (Inter V) delay = 39 ms, no event during follow-up. (Lower). Marked dyssynchrony in both ventricles, low interventricular delay (18 ms), sudden death at 24th month. LAO = left anterior oblique; LV = left ventricle; RR = mean duration of all normal-to-normal intervals on 24-h ambulatory electrocardiogram; RV = right venticle; SD = standard deviation.