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. Author manuscript; available in PMC: 2022 Sep 1.
Published in final edited form as: Int J Radiat Oncol Biol Phys. 2021 May 18;111(1):240–248. doi: 10.1016/j.ijrobp.2021.03.056

Fig. 1.

Fig. 1.

Measurements of oxygen in vitro by phosphorescence quenching and by oxygen electrode. Oxygen measurements in solutions having different pO2 levels (a) and in a solution upon application of FLASH irradiation (b), with the instantaneous change (red line) occurring in both phosphorescence (grey dots) and electrode (green lines) coincident with the time of the linac pulse. The unit displayed on the oxygen electrode panel is “% of air saturation”. The oxygen depletion rate in solutions with different scavenger concentrations after application of 20 Gy irradiation in FLASH mode (c)