Experimental validaton of peripheral dose distribution of electron beams for eclipse electron Monte Carlo algorithm

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dc.authorid0000-0002-3936-080X
dc.authorid0000-0002-0103-7683
dc.contributor.authorAcar, Hilal
dc.contributor.authorÇağlar, Mustafa
dc.contributor.authorYıldırım Altınok, Ayşe
dc.date.accessioned10.07.201910:49:13
dc.date.accessioned2019-07-10T19:50:17Z
dc.date.available10.07.201910:49:13
dc.date.available2019-07-10T19:50:17Z
dc.date.issued2018
dc.departmentİstanbul Medipol Üniversitesi, Tıp Fakültesi, Dahili Tıp Bilimleri Bölümü, Radyasyon Onkolojisi Ana Bilim Dalı
dc.descriptionWOS: 000443718300004
dc.description.abstractAim: The accuracy of two calculation algorithms of the Varian Eclipse treatment planning system (TPS), the electron Monte Carlo algorithm (eMC) and General Gaussian pencil beam algorithm (GGPB) for calculating peripheral dose distribution of electron beams was investigated. Methods: Peripheral dose measurements were carried out for 6, 9, 12, 15, 18 and 22 MeV electron beams using parallel plate ionisation chamber and EBT3 film in the slab phantom. Measurements were performed for 6 x 6, 10 x 10 and 25 x 25cm(2) cone sizes at d(max) of each energy up to 20 cm beyond the field edges. The measured and TPS calculated data were compared. Results: The TPS underestimated the out-of-field doses. The difference between measured and calculated doses increase with the cone size. For ionisation chamber measurement, the largest deviation between calculated and measured doses is <4.29% using the eMC, but can increase up to 8.72% of the distribution using GGPB. For film measurement, the minimum gamma analysis passing rates between measured and calculated dose distributions for all field sizes and energies used in this study were 91.2 and 74.7% for eMC and GGPB, respectively. Findings: The use of GGPB for planning large field treatments with 6 MeV could lead to inaccuracies of clinical significance.
dc.identifier.citationAcar, H., Çağlar, M. ve Yıldırım Altınok, A. (2018). Experimental validaton of peripheral dose distribution of electron beams for eclipse electron Monte Carlo algorithm. Journal of Radiotherapy in Practice, 17(3), 279-288. https://dx.doi.org/10.1017/S1460396917000784
dc.identifier.doi10.1017/S1460396917000784
dc.identifier.endpage288
dc.identifier.issn1460-3969
dc.identifier.issn1467-1131
dc.identifier.issue3
dc.identifier.scopusqualityQ4
dc.identifier.startpage279
dc.identifier.urihttps://dx.doi.org/10.1017/S1460396917000784
dc.identifier.urihttps://hdl.handle.net/20.500.12511/1938
dc.identifier.volume17
dc.identifier.wosqualityN/A
dc.indekslendigikaynakWeb of Science
dc.indekslendigikaynakScopus
dc.language.isoen
dc.publisherCambridge University Press
dc.relation.ispartofJournal of Radiotherapy in Practiceen_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanı
dc.rightsinfo:eu-repo/semantics/openAccess
dc.subjectElectron Beams
dc.subjectEMC
dc.subjectGGPB.EBT3 film
dc.subjectPeripheral Dose Distribution
dc.titleExperimental validaton of peripheral dose distribution of electron beams for eclipse electron Monte Carlo algorithm
dc.typeArticle

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