Abstract #1639

Geva T, Powell A, Sena L, Garg R, Samyn M

Cardiac magnetic resonance (CMR)imaging studies have shown that ventricular volumes, measured by steady state free precession (SSFP)cine CMR imaging, are larger and mass is lower when compared with fast gradient echo (GRE) cine CMR data. CMR can be used for serial assessment of patients with tetraology of Fallot (TOF), who experience many clinical problems related to residual right ventricular outflow tract obstruction, pulmonary regurgitation, and right ventricular dysfunction. This study uses SSFP cine CMR to characterize the range of biventricular dimensions and function in a large cohort of patients (n = 300)with repaired TOF, allowing comparisons between repair with a RVOT patch and RV-to-pulmonary artery conduit.