Point–Tracked Quantitative Analysis of Left Ventricular Motion from 3D Image Sequences Pengcheng Shi ∗,† , Albert J. Sinusas †,‡ , R. Todd Constable † , Erik Ritman ⋆ , and James S. Duncan ∗,† Departments of ∗ Electrical Engineering, † Diagnostic Radiology, and ‡ Medicine Yale University New Haven, CT 06520-8042 Department of Physiology and Biophysics ⋆ Mayo Clinic Rochester, MN 55905 This work was supported by NIH–NHLBI Grant No. R01HL44803. i