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. 2018 Mar 26;8:74. doi: 10.3389/fonc.2018.00074

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Copyright © 2018 Sethi, Emami, Small and Thomas.

This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

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Dose distribution produced by a 4 cm flat applicator. Dose is prescribed at 5 mm depth in phantom. Also indicated is 5 mm superficial layer used to evaluate dose homogeneity. Applicator shown in inset.