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Figure 2 Tomography before (A, B) and after (C, D) catheter ablation in a patient with a right sided accessory pathway. Panels A, C and B, D represent the left and the right ventricle, respectively. There is a phase difference between left (A) and right ventricle (B) that disappeared after ablation. However, after this radical cure, a small preexcitation zone persists in the right ventricle (arrow), although the delta wave has completely disappeared from the ECG.
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