Figure 1From: Comparison of 2D and 3D calculation of left ventricular torsion as circumferential-longitudinal shear angle using cardiovascular magnetic resonance tagging(a) Torsion (T) defined as the CL shear angle ( ρ : radius, ϕ : rotation, D: distance between slices). (b) Orientation of myofiber layers and normal rotational directions in the LV wall. Dashed lines: endocardial fiber direction, solid lines: epicardial fiber direction. ED: end-diastole, ES: end-systole.Back to article page