Technical Note: Design and commissioning of a water phantom for proton dosimetry in magnetic fields.
MR-guided proton therapy
magnetic fields
particle therapy
proton therapy
water phantom
Journal
Medical physics
ISSN: 2473-4209
Titre abrégé: Med Phys
Pays: United States
ID NLM: 0425746
Informations de publication
Date de publication:
Jan 2021
Jan 2021
Historique:
received:
31
07
2020
accepted:
11
09
2020
pubmed:
23
11
2020
medline:
15
5
2021
entrez:
22
11
2020
Statut:
ppublish
Résumé
To design and commission a water phantom suitable for constrained environments and magnetic fields for magnetic resonance (MR)-guided proton therapy. A phantom was designed, to enable precise, remote controlled detector positioning in water within the constrained environment of a magnet for MR-guided proton therapy. The phantom consists of a PMMA enclosure whose outer dimensions of The phantom was successfully operated with and without applied magnetic fields. For complex movements, a positioning uncertainty within 0.16 mm was found with an absolute accuracy typically below 0.3 mm. Laterally integrated depth dose curves agreed within 0.1 mm with data taken using a commercial water phantom. The lateral beam offset determined from beam profile measurements agreed well with data from Monte Carlo simulations. The phantom is optimally suited for detector positioning and dosimetric experiments within constrained environments in high magnetic fields.
Identifiants
pubmed: 33222211
doi: 10.1002/mp.14605
pmc: PMC7898880
doi:
Substances chimiques
Protons
0
Water
059QF0KO0R
Types de publication
Journal Article
Langues
eng
Sous-ensembles de citation
IM
Pagination
505-512Informations de copyright
© 2020 The Authors. Medical Physics published by Wiley Periodicals LLC on behalf of American Association of Physicists in Medicine.
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