Dynamic range and optimization strategies for radiochromic film calibration using gradient radiation fields.
dose gradients
dynamic range
optimization
radiochromic film
wedge filter
Journal
Journal of applied clinical medical physics
ISSN: 1526-9914
Titre abrégé: J Appl Clin Med Phys
Pays: United States
ID NLM: 101089176
Informations de publication
Date de publication:
12 Aug 2024
12 Aug 2024
Historique:
revised:
17
05
2024
received:
28
12
2023
accepted:
23
06
2024
medline:
12
8
2024
pubmed:
12
8
2024
entrez:
12
8
2024
Statut:
aheadofprint
Résumé
This investigation aimed to optimize gradient positioning for radiochromic film calibration to facilitate a uniform distribution of calibration points. The study investigated the influence of various parameters on gradient dose profiles generated by a physical wedge, assessing their impact on the field's dose dynamic range, a scalar quantity representing the span of absorbed doses. Numerical parameterization of the physical wedge profile was used to visualize and quantify the impact of field size, depth, and energy on the dynamic range of dose gradients. This concept enabled the optimization of the gradient positioning and estimation of the necessary number of exposures for the desired calibration dose range. An optimization algorithm based on histogram bin height minimization was developed and presented. The maximum dynamic range was achieved with a 20
Types de publication
Journal Article
Langues
eng
Sous-ensembles de citation
IM
Pagination
e14481Subventions
Organisme : Ministry of Education, Science, and Technological Development of the Republic of Serbia
ID : 451-03-65/2024-03/200162
Organisme : Natural Sciences and Engineering Research Council of Canada
ID : 03251
Informations de copyright
© 2024 The Author(s). Journal of Applied Clinical Medical Physics published by Wiley Periodicals LLC on behalf of American Association of Physicists in Medicine.
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