31 – Developments and implementation of a standardized data library for a transit dosimetry software, on Varian and Elekta linacs

Introduction: In the context of an increasing use of complex techniques, in vivo dosimetry using an electronic portal imaging device (EPID) – the standard equipment of most modern accelerators – is an efficient alternative to conventional in vivo dosimetry. However, the setup of EPID dosimetry requires large libraries of measured data, which slows down the installation of such a system. With the aim to exempt users from lengthy measurements, the use a “golden” data set for some parameters has been previously tested for EPIGRAY (DOSIsoft). To create a fully standardized library, the method has been extended to all the measured parameters of EPIgray and tested for linacs from the most common vendors (Varian, Elekta).