A slight modification of the VTK particle viewer example, to serve as a basis for viewing vessel tortuosity.
In order to compile, configure with the option VTK_DIR to link against VTK.
$ git clone git://github.com/chrismullins/VesselViewer.git
$ mkdir VV-build && cd VV-build
$ cmake -DVTK_DIR=/path/to/VTK-build /path/to/VesselViewer
$ make
$ ./VesselViewer /path/to/704withTort.tre