Clinical Evaluation of Noninvasive ECGI Epi-Endocardial Mapping Accuracy

Although ECG imaging technology has been in development for many years, the clinical validation of epi-endocardial ECGI mapping has been conducted only on relatively small groups of patients. This study was performed to evaluate epi-endocardial ECGI mapping accuracy for the pacings from implanted pacemakers in a single center single-blind cross-sectional study. Thirty patients with previously implanted pacemakers underwent epi-endocardial ECGI mapping using “Amycard 01C EP Lab” system (EP Solutions SA, Switzerland). The median (25-75% IQR) geodesic distance between noninvasively reconstructed and the reference pacing sites was 8 (5–11) mm for the LV epicardial and 4 (2–6) mm for the RV endocardial pacings. This study showed sufficient accuracy of epi-endocarial ECGI technology to use it in a routine clinical practice for identification of focal arrhythmia sources.