Investigate dose deposition coefficient map calculation (from CERR)

[cpinter]

During the interview with Dionne of UoT, dose deposition coefficient map was requested as a feature useful for her group. Currently they get it from CERR, it would be nice if slicer can generate the map. However she is not familiar with CERR's algorithm on how to compute these maps.

Migrated from https://app.assembla.com/spaces/slicerrt/tickets/87-investigate-dose-deposition-coefficient-map-calculation-(from-cerr)-/details