Gating and intrafraction drift correction on a 1.5  T MR-Linac: Clinical dosimetric benefits for upper abdominal tumors

MR-guided stereotactic body radiotherapy (SBRT) has been established as a feasible therapy for unresectable tumors in the upper abdomen, with recent clinical outcomes demonstrating safe delivery of ablative doses with hypofractionated regimens, while maintaining low acute toxicity rates [1 –5]. The online adaptive workflow of MR-guided SBRT is characterized by the possibility to negate interfraction motion, but further margin reduction and dose escalation is now mainly limited by intrafraction motion.

Source: Radiotherapy and Oncology - September 29, 2023 Category: Radiology Authors: Guus Grimbergen, Sara L. Hackett, Fasco van Ommen, Astrid L.H.M.W. van Lier, Pim T.S. Borman, Lieke T.C. Meijers, Eline N. de Groot-van Breugel, Johannes C.J. de Boer, Bas W. Raaymakers, Martijn P.W. Intven, Gert J. Meijer Tags: Short Communication Source Type: research