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. 2020 Dec 19;22(1):68–75. doi: 10.1002/acm2.13105

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© 2020 The Authors. Journal of Applied Clinical Medical Physics published by Wiley Periodicals LLC on behalf of 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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FIG. 2 — Axial, coronal and sagittal views of Halcyon kV‐CBCT images (see inset) co‐registered with planning CT images (see back of coronal and sagittal views) used for image guided prostate SBRT treatment on Halcyon. In addition to anatomical landmarks, the planned dose cloud was overlaid for this treatment. Halcyon kV‐CBCT images were acquired in the treatment position in free breathing and rigid‐registration was performed automatic image‐registration followed by manually fine‐tuning the fiducial markers for finer alignment.