Commissioning of the RefleXion X1 Linear Accelerator and Development of a Consensus Reference Beam Model

A systematic method for Reflexion planning and dosimetric commissioning was developed including a standardized set of treatment plans for model validation. Inter-institution differences between measurements and beam models suggest a gold beam reference dataset may be achievable with improved QC at installation, but at this time individual, site-specific beam models are necessary to encompass machine-specific variations.