Dose response of three-dimensional silicone-based radiochromic dosimeters for photon irradiation in the presence of a magnetic field.
3D radiation dosimetry
Magnetic resonance imaging guided radiotherapy
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:
Oct 2020
Oct 2020
Historique:
received:
02
07
2020
revised:
02
10
2020
accepted:
05
10
2020
entrez:
18
1
2021
pubmed:
19
1
2021
medline:
19
1
2021
Statut:
epublish
Résumé
The magnetic field in magnetic resonance imaging guided radiotherapy (MRgRT) delivery systems influences charged-particle trajectories and hence the three-dimensional (3D) radiation dose distributions. This study investigated the dose-response as well as dose-rate and fractionation dependencies of silicone-based 3D radiochromic dosimeters for photon irradiation in a magnetic field using a 0.35 T MRgRT system. We found a linear dose response up to 22.6 Gy and no significant dose-rate dependency as a function of depth. A difference in optical response was observed for dosimeters irradiated in a single compared to multiple fractions. The dosimeter showed clinical potential for verification of MRgRT delivery.
Identifiants
pubmed: 33458348
doi: 10.1016/j.phro.2020.10.003
pii: S2405-6316(20)30066-X
pmc: PMC7807676
doi:
Types de publication
Journal Article
Langues
eng
Pagination
81-84Informations de copyright
© 2020 The Authors.
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.
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