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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/).
MR-Linac-based interface on the MRIdian device showing the prespecified 3 mm gating margin (yellow) and prostate CTV (red). These images are acquired in the sagittal plain at 4 frames per second during treatment delivery.