Abstract #3733

MR-Guided Endocardial Local Activation Time Map During Programmed Stimulation

Samuel O. Oduneye¹, Labonny Biswas², Stefan Pintilie², Venkat Ramanan², Jennifer Barry², Tawfiq Zeidan Shwiri³, Ehud Kadmon³, Eugene Crystal³, Graham A. Wright¹

¹Medical Biophysics, University of Toronto, Toronto, Ontario, Canada; ²Imaging Research, Sunnybrook Research Institute, Toronto, Ontario, Canada; ³Arrhythmia Services, Sunnybrook Health Science Centre, Toronto, Ontario, Canada

We have previously presented an MR-compatible EP system designed for real-time MR imaging able to directly locate and characterize electrical properties of potential arrhythmogenic regions in the left ventricle (LV). Here we present our initial experience of ventricular endocardial local activation time (LAT) mapping during programmed stimulation performed in several porcine models.