Development of a PC-based virtual simulation system for the small department

For practical use and cost-effectiveness, the authors have developed a PC-based virtual simulation method with custom-made DRR image and many new simulation functions. The method shows compatible reliability and effectiveness compared with commercial versions using a workstation in terms of DRR image quality, ease of use, handling of various simulation tools and simulation results of all the crucial parameters such as beam parameters and localization of target and critical organs.