Fig. 3From: Generation of ozone during irradiation using medical linear accelerators: an experimental studyMean ozone concentrations in the PVC tube according to the beam energy and dose rates of X-rays from a medical linac (TrueBeam). The error bars denote the standard deviations of the three measurements. FF: flattening filter; FFF: flattening filter free; MU: monitor unitBack to article page