Fig. 1From: Ex vivo cardiovascular magnetic resonance diffusion weighted imaging in congenital heart disease, an insight into the microstructures of tetralogy of Fallot, biventricular and univentricular systemic right ventricleHelix angle (HA in red) and sheet angle (E2A in yellow) calculated from the projection of the eigenvectors of the diffusion tensor onto the circumferential and radial planes, respectivelyBack to article page