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. 2023 Oct 22;15(20):5101. doi: 10.3390/cancers15205101

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© 2023 by the authors.

Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).

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Depictions of discrepancies in synthetic CT images. (A) Case 1—An aliasing effect was observed near the posterior part of the brain where the CBCT FOV edge integrates with the planning CT. (B) Case 2—An aliasing effect was observed in the superior–inferior direction at the merged boundary, leading to an isocenter displacement error (isocenter in yellow circle) (for comparison, the original planning isocenter location is displayed in the bottom left). (C) Case 3—A distorted support couch structure in the DD sCT.