Characterization of the on-board megavoltage imager in a magnetic resonance-guided radiotherapy machine for beam output checks.
Dosimetry
MRI-Linac
MV imager
Quality assurance
Radiotherapy
Unity
Journal
Physics and imaging in radiation oncology
ISSN: 2405-6316
Titre abrégé: Phys Imaging Radiat Oncol
Pays: Netherlands
ID NLM: 101704276
Informations de publication
Date de publication:
Jan 2024
Jan 2024
Historique:
received:
17
11
2023
revised:
12
02
2024
accepted:
12
02
2024
medline:
26
2
2024
pubmed:
26
2
2024
entrez:
26
2
2024
Statut:
epublish
Résumé
We characterized the on-board megavoltage imager (MVI) of a magnetic resonance-guided radiotherapy machine for beam output checks. Linearity and repeatability of its dose response were investigated. Alignment relative to the beam under clinical circumstances was evaluated for a year using daily measurements. Linearity and short-term repeatability were excellent. Long-term repeatability drifted 0.8 % per year, which can be overcome by monthly cross calibrations. Long-term alignment was stable. Thus, the MVI has suitable characteristics for beam output checks.
Identifiants
pubmed: 38405429
doi: 10.1016/j.phro.2024.100558
pii: S2405-6316(24)00028-9
pmc: PMC10891347
doi:
Types de publication
Journal Article
Langues
eng
Pagination
100558Informations de copyright
© 2024 The Author(s).
Déclaration de conflit d'intérêts
The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper.