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. 2015 May 20;10(9):1357–1370. doi: 10.1007/s11548-015-1218-x

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© The Author(s) 2015

Open AccessThis article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made.

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Fig. 12 — Evaluation of the registered tip position with $e_{d}$ the Euclidean distance, $l_{d}$ the longitudinal distance and $o_{d}$ the orthogonal distance