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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.