Abstract #3922

Relationship Between Infarct Gray Zone and Characteristics of Ventricular Tachycardia Using Multi-Contrast Delayed Enhancement

Jay Stephen Detsky^1,2, Gideon A. Paul³, Kim A. Connelly^1,4, Alexander J. Dick³, Graham A. Wright^1,2

¹Imaging Research, Sunnybrook Health Sciences Centre, Toronto, Ontario, Canada; ²Medical Biophysics, University of Toronto, Toronto, Ontario, Canada; ³Schulich Heart Program, Sunnybrook Health Sciences Centre, Toronto, Ontario, Canada; ⁴Cardiology, St. Michael's Hospital, Toronto, Ontario, Canada

In this study, the peri-infarct gray zone is determined using an automated analysis of multi-contrast delayed enhancement (MCDE) images in patients with ischemic cardiomyopathy. The size of the gray zone is shown to distinguish between patients who are and are not inducible for ventricular tachycardia (VT). The size of the gray zone is also shown to strongly correlate with the VT cycle length.