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. 2022 Jan 19;23(4):e13525. doi: 10.1002/acm2.13525

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© 2022 The Authors. Journal of Applied Clinical Medical Physics published by Wiley Periodicals, LLC on behalf of The American Association of Physicists in Medicine

This is an open access article under the terms of the http://creativecommons.org/licenses/by/4.0/ License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.

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Differences in translation (upper row) and rotation around the specified axis (lower row) between deformed computed tomography (dCT) and synthetic CT (sCT). The red boxplots (left column) show differences in translation and rotation between cone beam CT registered to dCT, and CBCT registered to sCT for 14 cases in the right‐left (R‐L)/pitch, posterior‐anterior (P‐A)/yaw and inferior‐superior (I‐S)/roll directions. The blue boxplots (right column) show differences in translation and rotation between deformed DRR registered to orthogonal and synthetic DRR registered to orthogonal projection for 14 cases and six observers. The bar of the boxplots is the inter‐quartile range (IQR), the whiskers 1.5 $\cdot$ IQR and the plus outliers > or < 1.5 $\cdot$ IQR.