Delayed contraction area responsible for sustained ventricular tachycardia in an arrhythmogenic right ventricular cardiomyopathy: Demonstration by fourier analysis of SPECT equilibrium radionuclide angiography

Conclusion  Phase imaging assessed with a 3-dimensional analysis is particularly interesting for its capacity to detect an area with early contraction corresponding to the site of VT with accuracy and to demonstrate 1 or several areas with delayed contraction because of the loss of contractile tissue by fatty or fibrofatty replacement, as has been suggested with magnetic resonance images. We believe that this 3-dimensional Fourier analysis of SPECT ERNA should be widely used in sinus rhythm and when possible, during episodes of VT before treatment by ablation techniques or surgery.