Comment on 'Origins of the changing detector response in small megavoltage photon radiation fields'

A clarification is made with regard to the erroneous statement that assigns an incorrect conclusion to a paper by Andreo and Benmakhlouf (2017 Phys. Med. Biol. 62 1518-32) and in relation to other comments on that work. It is also argued that the Monte Carlo calculations made by the authors are based on physically incorrect input data for the fictitious materials used in their simulations, as density-effect corrections and stopping powers must correspond to the specific properties assigned to the fictitious material. Hence, their conclusions remain to be demonstrated using reliable input datasets.