Dosimetric and geometric end-to-end accuracy of a magnetic resonance guided linear accelerator

The introduction of real-time imaging by magnetic resonance guided linear accelerators (MR-Linacs) enabled adaptive treatments and gating on the tumor position. Different end-to-end tests monitored the accuracy of our MR-Linac during the first year of clinical operation. We report on the stability o...

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Detalles Bibliográficos
Autores principales: Stark, Luisa S., Andratschke, Nicolaus, Baumgartl, Michael, Bogowicz, Marta, Chamberlain, Madalyne, Dal Bello, Riccardo, Ehrbar, Stefanie, Girbau Garcia, Zaira, Guckenberger, Matthias, Krayenbühl, Jérôme, Pouymayou, Bertrand, Rudolf, Thomas, Vuong, Diem, Wilke, Lotte, Zamburlini, Mariangela, Tanadini-Lang, Stephanie
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Elsevier 2020
Materias:
Technical Note
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7807549/
https://www.ncbi.nlm.nih.gov/pubmed/33458353
http://dx.doi.org/10.1016/j.phro.2020.09.013
Descripción
Sumario:The introduction of real-time imaging by magnetic resonance guided linear accelerators (MR-Linacs) enabled adaptive treatments and gating on the tumor position. Different end-to-end tests monitored the accuracy of our MR-Linac during the first year of clinical operation. We report on the stability of these tests covering a static, adaptive and gating workflow. Film measurements showed gamma passing rates of 96.4% ± 3.4% for the static tests (five measurements) and for the two adaptive tests 98.9% and 99.99%, respectively (criterion 2%/2mm). The gated point dose measurements in the breathing phantom were 2.7% lower than in the static phantom.

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