Cerebrovascular Circulation Modelling Software?

[JuneKK]

    On Aug 22, Ketan Patel wrote:
        << Does anyone know if there is a cerebrovascular circulation
modelling  kit (human brain) available? I wonder if such a program exists
- one that show changes in regional circulation due to stenosis, atrophy,
stroke, mass shifts, etc. 
         Is there any rudimentary software that may be modified for this
purpose?>>  
Please e-mail me this info as well, if available.  Thanks!
June Kume-Kick