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. Author manuscript; available in PMC: 2022 Mar 15.
Published in final edited form as: Int J Radiat Oncol Biol Phys. 2020 Oct 24;109(4):1054–1075. doi: 10.1016/j.ijrobp.2020.10.021

Figure 2:

Figure 2:

Deformable image registration is used in many aspects of the ART workflow including contour propagation and deforming electron densities as shown in the figure. Note the deformed right kidney and erroneously warped deformed density map highlighting the need for per-fraction review and quality assurance of the electron density map and contours used for online ART.