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Once chamber geometry is determined, the EnSite 3000 noncontact mapping system can create a voltage map during a single cardiac cycle. The EnSite uses an inverse solution to the Laplace equation to process the amplified far-field signals from the noncontact catheter. This process creates a three-dimensional endocardial potential map from a single cardiac cycle. Dynamic substrate mapping (DSM) is an...
Objectives Noncontact mapping has been demonstrated to facilitate RF ablation of ventricular arrhythmias, but the reproducibility in the localization of endocardial exit sites during focal ventricular tachycardia (“VT”) originating from defined myocardial layers has not been systematically studied. Furthermore, it remains unclear whether noncontact mapping can distinguish between endo- and epicardial...
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