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. 2015 Jan 10;10:13. doi: 10.1186/s13014-014-0308-1

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© Jonsson et al.; licensee BioMed Central. 2015

This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/2.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly credited. The Creative Commons Public Domain Dedication waiver (http://creativecommons.org/publicdomain/zero/1.0/) applies to the data made available in this article, unless otherwise stated.

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Anatomical CT image, dose distribution and gamma map for a representative slice of the patient with the largest observed dosimetric errors. The high dose region extends into the ethmoidal and sphenoidal sinuses.