Annual Report 2010 - Fachgruppe Informatik an der RWTH Aachen ...

voxels with only a low number of passes. By accounting for the uncertainty, the method of
probabilistic tractography allows to draw a clearer picture of the overall fiber architecture
within the human brain.
We propose a customized direct volume rendering method through which the probabilities of
fiber tracts are conveyed by colors and opacities. By rendering multiple scalar-valued data
sets simultaneously we are able to visualize sections where multiple fiber tracts intersect,
which is an important methodological issue in DTI tractography (crossing fibers). In the
future we plan to conduct a user study with domain scientists in order to quantify the
effectiveness of our visualization.
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