Spectral characterization and comparison of EBT3, EBT4, and EBT-XD radiochromic films.

Autor:	Pecić S; Applied Physics, University of Belgrade Faculty of Physics, Studentski Trg 12-16, Beograd, 11000, SERBIA., Devic S; Radiation Ocology G18-125, McGill University, SNBD Jewish Genarl Hospital, 3755 chemin de la Cote-Sainte-Catherine, Montrael, Quebec, H3T 1E2Canada, Montreal, Quebec, H3T 1E2, CANADA., Belca I; University of Belgrade Faculty of Physics, Studentski Trg 12-16, Beograd, 11000, SERBIA., Mosic MS; University of Belgrade Faculty of Physics, Studentski trg 12-16, Beograd, 11000, SERBIA., Kurij L; Center for Neurooncology, Gamma Knife, University Clinical Center of Serbia, Koste Todorovića 4, Beograd, Beograd, 11000, SERBIA., Nidžović B; Institute of Oncology and Radiology of Serbia, Pasterova 14, Beograd, Beograd, 11000, SERBIA., Stojadinovic S; Radiation Oncology, University of Texas Southwestern Medical Center at Dallas, 2280 Inwood Rd, Dallas, Texas, 75390, UNITED STATES.
Jazyk:	angličtina
Zdroj:	Physics in medicine and biology [Phys Med Biol] 2024 Dec 13. Date of Electronic Publication: 2024 Dec 13.
DOI:	10.1088/1361-6560/ad9f1b
Abstrakt:	This study analyzed the spectral response of EBT3, EBT4, and EBT-XD radiochromic films using absorption spectroscopy. The primary focus was on characterizing the evolution of spectral signatures across a range of absorbed doses, thereby elucidating the unique dose-dependent response profiles of each film type. Ten samples of each film type were subjected to open field irradiation within their designated dose ranges (1-20 Gy for EBT3 and EBT4, 1-50 Gy for EBT-XD). The corresponding absorption spectra were recorded and studied via decomposition and parameterization of dose-dependent spectral features. Lorentzian profiles were employed for spectral decomposition. Each film type displayed unique spectral signatures with distinct absorption peaks: nine for EBT3, eleven for EBT4, and twelve constituent profiles for EBT-XD. Notably, the EBT4 film demonstrated a slight difference in the blue part of the absorption spectrum and a change in the response, relative to its EBT3 predecessor. Orientation dependence of the film spectra was most pronounced for the EBT3 film type, followed by a declining trend across EBT4 and EBT-XD films. Absorption spectroscopy portrayed distinct spectral fingerprints of the studied film types, aiding the selection of the most suitable film for specific applications. (Creative Commons Attribution license.)
Databáze:	MEDLINE
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