Measuring small field profiles and output factors with a stemless plastic scintillator array.
organic photodiode
plastic scintillator
small field dosimetry
stemless plastic scintillation detector
Journal
Medical physics
ISSN: 2473-4209
Titre abrégé: Med Phys
Pays: United States
ID NLM: 0425746
Informations de publication
Date de publication:
Jan 2022
Jan 2022
Historique:
revised:
09
09
2021
received:
21
04
2021
accepted:
30
10
2021
pubmed:
19
11
2021
medline:
18
1
2022
entrez:
18
11
2021
Statut:
ppublish
Résumé
To fabricate a 1D stemless plastic scintillation detector (SPSD) array using organic photodiodes and to use the detector to measure small field profiles and output factors. An organic photodiode array was fabricated by spin coating a mixture of P3HT and PCBM organic semiconductors onto an ITO-coated glass substrate and depositing aluminum top contacts. Four bulk scintillators of various dimensions were placed on top of the photodiode array. A fifth scintillator was used that had been segmented by laser etching and the septa filled with black paint. Each detector array was first calibrated using a reference field of 95 cm SSD, 5 cm depth, and 10 × 10 cm The segmented scintillator measured profiles that were in good agreement with film for all three field sizes. Output factors agreed to within 1.2% of ion chamber over the field size range of 1 × 1 cm A 1D SPSD array was demonstrated with various scintillator designs. The etched scintillator array demonstrated excellent small field profile measurements when compared to film and output factors (down to 1 × 1 cm
Substances chimiques
Plastics
0
Diamond
7782-40-3
Types de publication
Journal Article
Langues
eng
Sous-ensembles de citation
IM
Pagination
624-631Subventions
Organisme : NSERC: Discovery
ID : RGPIN-2014-06113NSERC
Organisme : postgraduate scholarship-doctoral (PGS-D)
Informations de copyright
© 2021 American Association of Physicists in Medicine.
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