Figure 1From: Estimation of Eulerian strain from tagged CMR images using band-pass optical flow and HARP(a) Numerical phantom, showing three frames immediately after the R-wave (left), mid-systole (middle), and late diastole (right). Note the changes in tag deformation and grid relaxation across the cardiac cycle. (b) Circumferential strain measurements in the inferolateral myocardium segment in the numerical phantom from HARP (red), OF (green), and actual phantom (blue).Back to article page