@INPROCEEDINGS{kanitsar:2003:Adv,
  author =      {Armin Kanitsar and Rainer Wegenkittl and Dominik 
                 Fleischmann and Meister Eduard Gr\"oller},
  title =       {{A}dvanced {C}urved {P}lanar {R}eformation: {F}lattening of 
                 {V}ascular {S}tructures},
  booktitle =    {{IEEE} {V}isualization 2003},
  year =        {2003},
  month =        oct,
  pages =       {43--50},
  keywords =    {computed tomography angiography, vessel analysis, 
                 curved planar reformation},
  institution = {Institute of Computer Graphics and Algorithms,
                 Vienna University of Technology},
  url =          {http://www.cg.tuwien.ac.at/research/vis/adapt/},
  note =        {human contact: technical-report@cg.tuwien.ac.at},
  abstract =    {Traditional volume visualization techniques may provide incomplete clinical information needed for many 
                 applications in medical visualization. Especially in the area of vascular visualization important features 
                 such as the patent lumen of a diseased vessel segment may not be visible. Curved Planar Reformation (CPR) 
                 has proven to be an acceptable practical solution. Existing CPR techniques, however, still have diagnostically 
                 relevant limitations. In this paper we introduce two advanced methods for efficient vessel visualization, 
                 based on the concept of CPR. Both methods benefit from relaxation of spatial coherence in favor of improved 
                 feature perception. We present a new technique to visualize the interior of a vessel in a single image. A 
                 vessel is re-sampled along a spiral around the vessel central axis. The helical spiral depicts the vessel 
                 volume. Furthermore, a method to display an entire vascular tree without mutually occluding vessels is 
                 presented. Minimal rotations around the branching points of a vessel tree eliminate occlusions. For each viewing 
                 direction the entire vessel structure is visible.}
}