The development of a treatment control system for a passive scattering proton therapy installation

Ocular melanoma has been treated using proton therapy at the Centre Antoine Lacassagne (CAL) since 1991, following commissioning of 65 MeV cyclotron MEDICYC and its associated beam-lines a few years earlier. The dedicated eye-line is optimized for shallow tumors sharp penumbrae provides state-of-the-art quality care. cyclotron, treatment systems, which are maintained exclusively by staff CAL, have proven to be exceptionally robust with up-times consistently above 95%. systems however aging need replaced ensure continuation ocular treatments MEDICYC. This paper describes development performance new control dose measurement system Software hardware architectural design choices discussed in context requirements delivery precision, robustness patient safety. delivery, monitoring beam assurance presented.