TOPAS is a user-friendly simulation software layered upon the general-purpose Geant4 particle transport toolkit. It was designed specifically for medical physics applications by MGH, Stanford and UCSF. The latest version of TOPAS can be 

TOPAS software is available here and the documentation is here.

Key MGH personnel involved

  • Harald Paganetti, PhD (PI)
  • Jan Schuemann, PhD
  • Alejandro Bertolet
  • Isaac Meyer
  • Wook-Geun Shin

Collaborators

  • Bruce Faddegon (UCSF)
  • Jose Ramos Mendez (UCSF)
  • Naoki  Dominguez Kondo, PhD (UCSF)
  • Ramon Ortiz, PhD (UCSF)
  • Thongchai Masilela, PhD (UCSF)