Figure 7
From: Deformation analysis of 3D tagged cardiac images using an optical flow method
LV end-systolic minimum principal strain ( ε 3 ) at the same longitudinal levels as depicted in Figure 5 (A-C). The color and length of the overlaid line segments represent the magnitude of ε3, while the vector indicates the direction. The mid-wall surface was reconstructed and color-coded by eigenvalues ε3, with eigenvectors superimposed at four longitudinal levels (D).