New imaging techniques in ventricular tachycardia ablation: integration of myocardial thickness analysis software in computed tomography with omnipolar mapping

Abstract Funding Acknowledgements Type of funding sources: None. Background/Introduction Magnetic resonance imaging (MRI) is very useful for planning the ablation ventricular tachycardias (VT) related to scar, since it allows identification anatomy, scar dense/border zone (DZ/BZ) and conduction channels (CC). However, access this test limited in many centres and, addition, artefacts generated by pacing/defibrillation devices (ICDs) can often make uninterpretable. Multidetector cardiac computed tomography (MDCT) offers advantages greater accessibility, better anatomical characterisation less device artefacts, although there little experience its use. Purpose The objective evaluate effectiveness integrating myocardial thickness analysis software with MDCT omnipolar electroanatomical mapping VT procedures patients cardiomyopathy. Methods Single-centre, descriptive study a serie patients, ICD carriers, that underwent ablation: - Patient 1- 72-year-old male ischaemic heart disease. 2- 46-year-old left arrhythmogenic 3- 60-year-old biventricular 4- 28-year-old female right was performed on all images were post-processed using software. A 3D colour map created DZ, BZ CC. This fused during electrophysiological technology. Results In cases high correlation between CC detected postprocessed area pathological voltage late electrograms map. patient-1, CT coincides diastolic corridor clinical (image 1A). patient 2, identified direct relationship circumflex artery superior region DZ 1B). 3 4, scan DZ/BZ outflow tract coronary arteries phrenic nerve 1 C D). Conclusions positioned as an alternative MRI ablation, localises critical structures identifies accurately.