Dose-response of deformable radiochromic dosimeters for spot scanning proton therapy.
3D dosimetry
Deformation
Monte Carlo
Proton therapy
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:
06
07
2020
revised:
03
11
2020
accepted:
10
11
2020
entrez:
18
1
2021
pubmed:
19
1
2021
medline:
19
1
2021
Statut:
epublish
Résumé
Intrafractional motion and deformation influence proton therapy delivery for tumours in the thorax, abdomen and pelvis. This study aimed to test the dose-response of a compressively strained three-dimensional silicone-based radiochromic dosimeter during proton beam delivery. The dosimeter was read-out in its relaxed state using optical computed tomography and calibrated for the linear energy transfer, based on Monte Carlo simulations. A three-dimensional gamma analysis showed a 99.3% pass rate for 3%/3 mm and 93.9% for 2%/2 mm, for five superimposed measurements using deformation-including Monte Carlo dose calculations as reference. We conclude that the dosimeter's dose-response is unaffected by deformations.
Identifiants
pubmed: 33458356
doi: 10.1016/j.phro.2020.11.004
pii: S2405-6316(20)30075-0
pmc: PMC7807645
doi:
Types de publication
Journal Article
Langues
eng
Pagination
134-137Informations 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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