Abstract: A system, apparatus and process for characterizing aspects of vascular scenarios is described, and includes an input module and a database. The system also includes access to a FSI solver. The FSI solver accepts information from the input module and the database, and uses the accepted information to model a vascular site of interest and provide results from modeling the vascular site of interest. The system also includes interfaces for transmitting information from the input module and the database to the FSI solver and for receiving the results from the FSI solver, and an ensemble of analysis modules which is coupled to the interface for receiving results. The ensemble of analysis modules compares various treatment options, allows before-and-after comparisons of aspects of the vascular site of interest and provides quantitative assessments of parameters of interest describing the vascular site of interest.