TOFMOD Workshop 2020 (satellite event of Virtual Physiological Human conference 2020) Speaker: Daniel Castellanos, UTSW Medical Center Dallas & Boston Children's Hospital, Boston, USA Title: Left ventricular torsion obtained using equilibrated warping in patients with repaired Tetralogy of Fallot Abstract: Patients after surgical repair of Tetralogy of Fallot (rTOF) may suffer a decrease in left ventricular (LV) function. We have evaluated a novel finite element method for image registration to assess LV torsion in patients with rTOF. The assessment of torsion is based on the finite element method for image registration, and the equilibrium gap principle for problem regularization, known as equilibrated warping [1]. We found the equilibrated warping method of image registration to assess LV torsion is feasible in patients with rTOF and shows good reliability. [1] Genet, M., Stoeck, C.T., Von Deuster, C., Lee, L.C. and Kozerke, S., 2018. Equilibrated warping: Finite element image registration with finite strain equilibrium gap regularization. Medical image analysis, 50, pp.1-22.