Comparison of 2D and 3D Calculation of Left Ventricular Torsion as Circumferential-Longitudinal Shear Angle Using MRI Tagging

Iris K. Rssel¹, Sandra R. Tecelo², Joost P. Kuijer¹, J Tim Marcus¹

Left ventricular torsion can be calculated from 2D or 3D datasets, where the 2D method is faster, but the 3D method closer to the true torsion. Both methods are compared to indicate whether it is legitimate to calculate torsion from 2D datasets only. Both methods were found to be strongly related and differences were linear and predictable. Therefore it is legitimate to use the faster 2D method for torsion calculation.