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. 2021 Sep 20;26(9):098003. doi: 10.1117/1.JBO.26.9.098003

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© 2021 The Authors

Published by SPIE under a Creative Commons Attribution 4.0 International License. Distribution or reproduction of this work in whole or in part requires full attribution of the original publication, including its DOI.

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Fig. 5 — The calculated radiant Cherenkov emission from Eqs. (2) and (9) is plotted as a function of surface dose (a), dose build-up slope (b), and the effective attenuation coefficient in tissue (c). In (a), $k_{1}$ is varied with constant $k_{2}$ values for 6, 10, and 18 MV x-ray beams as indicated. The black arrows denote the specific $k_{1}$ and $k_{2}$ values for the corresponding energies. Figure (b) is analogous to (a), with $k_{2}$ varied over three constant $k_{1}$ values for 6, 10, and 18 MV.