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. 2017 Feb 28;9(2):63–71. doi: 10.4329/wjr.v9.i2.63

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©The Author(s) 2016. Published by Baishideng Publishing Group Inc. All rights reserved.

Open-Access: This article is an open-access article which was selected by an in-house editor and fully peer-reviewed by external reviewers. It is distributed in accordance with the Creative Commons Attribution Non Commercial (CC BY-NC 4.0) license, which permits others to distribute, remix, adapt, build upon this work non-commercially, and license their derivative works on different terms, provided the original work is properly cited and the use is non-commercial. See: http://creativecommons.org/licenses/by-nc/4.0/

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Relationship between the dose enhancement ratio and skin target thickness with nanoparticle concentrations of (A) 7, (B) 18 and (C) 40 mg/mL using the Au, Pt , I, Ag and Fe₂O₃ nanoparticles for the 105 and 220 kVp photon beams. DER: Dose enhancement ratio.