A Monte Carlo evaluation for effects of probable dimensional uncertainties of low dose rate brachytherapy seeds on dose
Küçük Resim Yok
Tarih
2012
Yazarlar
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
Urban and Partner
Erişim Hakkı
info:eu-repo/semantics/closedAccess
Özet
The aim of this study is to determine effects of size deviations of brachytherapy seeds on two dimensional dose distributions around the seed. Although many uncertainties are well known, the uncertainties which stem from geometric features of radiation sources are weakly considered and predicted. Neither TG-43 report which is not completely in common consensus, nor individual scientific MC and experimental studies include sufficient data for geometric uncertainties. Sizes of seed and its components can vary in a manufacturing deviation. This causes geometrical uncertainties, too. In this study, three seeds which have different geometrical properties were modeled using EGSnrc-Code Packages. Seeds were designed with all their details using the geometry package. 5% deviations of seed sizes were assumed. Modified seeds were derived from original seed by changing sizes by 5%. Normalizations of doses which were calculated from three kinds of brachytherapy seed and their derivations were found to be about 3%-20%. It was shown that manufacturing differences of brachytherapy seed cause considerable changes in dose distribution. © 2014.
Açıklama
Anahtar Kelimeler
Brachytherapy, Dose, EGSnrc, Monte Carlo, TG-43 report
Kaynak
Reports of Practical Oncology and Radiotherapy
WoS Q Değeri
Scopus Q Değeri
Q3
Cilt
19
Sayı
5
