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Patient positioning and immobilization procedures for hybrid MR-Linac systems

Hybrid magnetic resonance (MR)-guided linear accelerators represent a new horizon in the field of radiation oncology. By harnessing the favorable combination of on-board MR-imaging with the possibility to daily recalculate the treatment plan based on real-time anatomy, the accuracy in target and org...

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Main Authors: Cuccia, Francesco (Author) , Alongi, Filippo (Author) , Belka, Claus (Author) , Boldrini, Luca (Author) , Hörner-Rieber, Juliane (Author) , McNair, Helen (Author) , Rigo, Michele (Author) , Schoenmakers, Maartje (Author) , Niyazi, Maximilian (Author) , Slagter, Judith (Author) , Votta, Claudio (Author) , Corradini, Stefanie (Author)
Format: Article (Journal)
Language:English
Published: 20 September 2021
In: Radiation oncology
Year: 2021, Volume: 16, Pages: 1-14
ISSN:1748-717X
DOI:10.1186/s13014-021-01910-6
Online Access:Verlag, lizenzpflichtig, Volltext: https://doi.org/10.1186/s13014-021-01910-6
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Author Notes:Francesco Cuccia, Filippo Alongi, Claus Belka, Luca Boldrini, Juliane Hörner-Rieber, Helen McNair, Michele Rigo, Maartje Schoenmakers, Maximilian Niyazi, Judith Slagter, Claudio Votta and Stefanie Corradini
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Summary:Hybrid magnetic resonance (MR)-guided linear accelerators represent a new horizon in the field of radiation oncology. By harnessing the favorable combination of on-board MR-imaging with the possibility to daily recalculate the treatment plan based on real-time anatomy, the accuracy in target and organs-at-risk identification is expected to be improved, with the aim to provide the best tailored treatment. To date, two main MR-linac hybrid machines are available, Elekta Unity and Viewray MRIdian. Of note, compared to conventional linacs, these devices raise practical issues due to the positioning phase for the need to include the coil in the immobilization procedure and in order to perform the best reproducible positioning, also in light of the potentially longer treatment time. Given the relative novelty of this technology, there are few literature data regarding the procedures and the workflows for patient positioning and immobilization for MR-guided daily adaptive radiotherapy. In the present narrative review, we resume the currently available literature and provide an overview of the positioning and setup procedures for all the anatomical districts for hybrid MR-linac systems.
Item Description:Published online: 20 September 2021
Gesehen am 22.03.2022
Physical Description:Online Resource
ISSN:1748-717X
DOI:10.1186/s13014-021-01910-6

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