Investigation of dose distribution at intersection region of split IMRT fields using two different dosimetric modality
Küçük Resim Yok
Tarih
2015
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
Kare Publ
Erişim Hakkı
info:eu-repo/semantics/closedAccess
Özet
OBJECTIVES The purpose of this study is to investigate dose distribution in the overlap region of two split sub-fields generated by TPS. METHODS IMRT treatment fields larger than 15 cm were planned. TPS created two new sub-fields by splitting each original field. IMRT plans of 14 overlapping complementary binary sub-fields were sent to virtual phantom of TPS for quality assurance (QA) calculations by setting all gantry and collimator angles zero. The measurements at linac were taken using 2D-ion chamber lattice and film both placed at 5 cm depth in solid phantom at QA conditions. RESULTS According to different analyze criterias, consistence of dose fluence related to all fields and sub-fields were found respectively between 81%-99.2% and 80.4%-99.7% by 2D-Array ion chamber system. CONCLUSION As a result there was no statistically significant difference between calculated and measured dose distributions in overlap regions of two split fields derived from fields larger than 15 cm.
Açıklama
Anahtar Kelimeler
Split Fields, Gamma-Index Analysis, Quality Assurance, Overlap Region, Intensity Modulated Radiation Therapy
Kaynak
Turk Onkoloji Dergisi-Turkish Journal Of Oncology
WoS Q Değeri
N/A
Scopus Q Değeri
Q4
Cilt
30
Sayı
4
