Samuel O. Oduneye1, Andriy Shmatukha2,
Vladimir Verpakhovski3, Charles L. Dumoulin4, Ehud
Schmidt5, Eugene Crystal6, Graham A. Wright1
1Medical Biophysics, Sunnybrook Health
Sciences Centre, University of Toronto, Toronto, Ontario, Canada; 2GE
Healthcare, Toronto, Ontario, Canada; 3Sunnybrook Health Sciences
Centre, Toronto, Ontario, Canada; 4GE Global Research Center,
Niskayuna, NY, United States; 5Brigham and Women's Hospital &
Massachusetts General Hospital, Boston, MA, United States; 6Arrhythmia
Services, Sunnybrook Health Sciences Centre, Toronto, Canada
In
recent studies, electrophysiology information has been compared with
pre-acquired MR images to determine the relation between the two
measurements; however, that approach is sensitive to registration errors and
changes in anatomical conditions. Here, we present an MR-compatible EP system
for real-time MR imaging able to directly locate and characterize electrical
properties of potential arrhythmogenic regions in the left ventricle (LV) by
measuring local conduction velocities at different pacing frequencies.