Wiens, VitalisSchlaffke, LaraSchmidt-Wilcke, TobiasSchultz, ThomasN. Elmqvist and M. Hlawitschka and J. Kennedy2014-12-162014-12-162014978-3-905674-69-9https://doi.org/10.2312/eurovisshort.20141154Standard streamtubes for the visualization of diffusion MRI data are rendered either with a circular or with anelliptic cross section whose aspect ratio indicates the relative magnitudes of the medium and minor eigenvalues.Inspired by superquadric tensor glyphs, we propose to render streamtubes with a superquadric cross section,which develops sharp edges to more clearly convey the orientation of the second and third eigenvectors where theyare uniquely defined, while maintaining a circular shape when the smaller two eigenvalues are equal. As a secondcontribution, we apply our novel superquadric streamtubes to visualize uncertainty in the tracking direction ofHARDI tractography, which we represent using a novel propagation uncertainty tensorComputer Graphics [I.3.8]Applications