Figure 2.

Computed tomography of a 75-year-old man with right-ventricular dysfunction showing increased right-to-left diameter ratio. The short-axis is measured at the widest points between the inner surface of the free wall and the surface of the interventricular septum, in axial transverse images used to diagnose procedure, without reconstructions. The right and left ventricle diameters selected to calculate the ratio are by definition the largest transverse diameters and are therefore often measured in different CTA slices. Note the interventricular septum bowing to the left (arrow).