This analysis shows that for global fitting, the spatial resolution of the reconstructed displacement field is dominated by the order of the displacement field-fitting reconstruction technique. However, the order is optimized to the tag data density and image quality, thus, the spatial resolution is ultimately determined by the density of the tag data. The global fitting produces a ringing artifact resulting from the truncation of the power series used for the fitting expression. Local fitting improves the spatial resolution of the reconstruction and corrects the ringing artifact from the global fit. Figure 2 Volume rendered computer-generated heart models.
Pixel intensity relates circumferential displacement.
Figure 3 Circumferential displacement versus position around the heart equator.