  In cases of pressure or volume overload, probing cardiac function may be
difficult because of the interactions between shape and deformations.In this
work, we use the LDDMM framework and parallel transport to estimate and
reorient deformations of the right ventricle. We then propose a normalization
procedure for the amplitude of the deformation, and a second-order spline model
to represent the full cardiac contraction. The method is applied to 3D meshes
of the right ventricle extracted from echocardiographic sequences of 314
patients divided into three disease categories and a control group. We find
significant differences between pathologies in the model parameters, revealing
insights into the dynamics of each disease.
