Figure 6
From: Deformation analysis of 3D tagged cardiac images using an optical flow method
LV end-systolic maximum principal strain ( ε 1 ) 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 ε1, while the vector indicates the direction. The mid-wall surface was reconstructed and color-coded by eigenvalues ε1, with eigenvectors superimposed at four longitudinal levels (D).