131 Proton arc therapy: advantages over conventional proton therapy and impact on range uncertainties

Purpose/Objective Proton therapy for cancer reduces the integral radiation dose to the patient compared to conventional photon treatments.1 The number of proton therapy centers globally has been growing rapidly as a result, but uncertainties in the in vivo proton range remain a considerable hurdle.2,3 A variety of different approaches to reduce proton range uncertainties are therefore currently being pursued.4,5,6,7,8,9,10 The associated …