The effect of thermoplatic mask to the surface dose in sterotactic brain treatments with flattening filter free beams with ebt3 gafchromic film and osl dosimeter

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dc.authorid0000-0002-3936-080X
dc.contributor.authorYılıdır, G.
dc.contributor.authorAcar, Hilal
dc.contributor.authorKüçük, Nadir
dc.contributor.authorKüçükmorkoç, Esra
dc.contributor.authorDoyuran, Mine
dc.contributor.authorÇağlar, Mete
dc.contributor.authorYıldırım Altınok, Ayşe
dc.contributor.authorCebe, Mehmet Ata
dc.contributor.authorMabhouti, H.
dc.contributor.authorÇağlar, Hale Başak
dc.date.accessioned10.07.201910:49:13
dc.date.accessioned2019-07-10T20:01:44Z
dc.date.available10.07.201910:49:13
dc.date.available2019-07-10T20:01:44Z
dc.date.issued2015
dc.departmentİstanbul Medipol Üniversitesi, Tıp Fakültesi, Dahili Tıp Bilimleri Bölümü, Radyoloji Ana Bilim Dalı
dc.description57th Annual Meeting and Exhibition of the American-Association-of-Physicists-in-Medicine (AAPM) -- JUL 12-16, 2015 -- Anaheim, CA
dc.descriptionWOS: 000356998302437
dc.description.abstractAbstractPurpose:The surface dose of flattening filter free beams is higher than conventional flattening filter beams. In this study, The effect of thermoplatic mask to the surface dose in sterotactic brain treatments was compared using EBT3 Gafchromic film and OSL dosimeter.Methods:Treatment planning were done using 2 full arc VMAT technique with 6 FFF beam on the CT scan of Randophantom simulating the treatment of sterotactic treatments for one brain metastasis.1×1 cm2 Gafchromic EBT 3 film pieces were placed under the thermoplastic mask on the lens of the phantom. Then OSL dosimeter was also placed at the same way in the same place. Then phantom was irradiated without mask with film and OSL again. The surface doses with or without mask was compared for film and OSL dosimeter seperately.Results:The calibration of film and OSL dosimetry were done at first. Surface dosemeasurements made using the EBT3 film showed good agreement with results of the OSL dosimetry for standard fields of FFF beams within the measurement uncertainty of 3.1%. The surface dose determined using EBT3 film was found to change from 57 % to 93 % to with the mask. The surface dose determined using OSL dosimeter was found to change from 56 % to 93 % to with the mask. This study also demonstrates the suitability of Gafchromic EBT3 film and OSL dosimeter for surface dose measurements in FFF beams.Conclusion:The skin sparing effect FFF beams are lower than conventional beams. Significant bolus effect on skin dose in the presence of thermoplastic mask was seen. The skin reactions resulting from thermoplastic masks should be monitored especially for FFF beams and corrective measures should be taken during treatment to avoid skin toxicity.
dc.description.sponsorshipAmerican Association of Physicists in Medicineen_US
dc.identifier.citationYılıdır, G., Acar, H., Küçük, N., Küçükmorkoç, E., Doyuran, M., Çağlar, M. ... Çağlar, H. B. (2015). The effect of thermoplatic mask to the surface dose in sterotactic brain treatments with flattening filter free beams with ebt3 gafchromic film and osl dosimeter. 57th Annual Meeting and Exhibition of the American-Association-of-Physicists-in-Medicine içinde (3505-3505. ss.). Anaheim, California, July, 12-16, 2015. https://dx.doi.org/10.1118/1.4925095
dc.identifier.doi10.1118/1.4925095
dc.identifier.endpage3505
dc.identifier.issn0094-2405
dc.identifier.issue6
dc.identifier.startpage3505
dc.identifier.urihttps://dx.doi.org/10.1118/1.4925095
dc.identifier.urihttps://hdl.handle.net/20.500.12511/3421
dc.identifier.volume42
dc.identifier.wosqualityQ1
dc.indekslendigikaynakWeb of Science
dc.language.isoen
dc.publisherAmerican Association of Physicists in Medicine
dc.relation.ispartof57th Annual Meeting and Exhibition of the American-Association-of-Physicists-in-Medicineen_US
dc.relation.publicationcategoryKonferans Öğesi - Uluslararası - Kurum Öğretim Elemanı
dc.rightsinfo:eu-repo/semantics/closedAccess
dc.subjectThermoplatic
dc.subjectSurface
dc.subjectDosimeter
dc.subjectGafchromic Film
dc.titleThe effect of thermoplatic mask to the surface dose in sterotactic brain treatments with flattening filter free beams with ebt3 gafchromic film and osl dosimeter
dc.typeConference Object

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