Cheng, Soon Keong
(2010)
Dosimetric verification of intensity modulated radiation therapy treatment plans with gafchromic ebt film using 6 mv photons.
PhD thesis, Universiti Sains Malaysia.
Abstract
Dalam projek ini, ciri-ciri filem Gafchromic (jenis EBT) diselidik sebagai alat penguji untuk jaminan kualiti. Ciri-ciri dosimetri filem EBT dianalisis sebelum digunakan dalam pengesahan dos IMRT. Filem ini diimbas dengan pengimbas dokumen Epson V700 dan kemudian dianalisis dengan meggunakan perisian Image-J dan Omni-pro. Evaluasi juga dijalankan untuk mengetahui sifat-sifat pengimbas serta perisian yang digunakan. Kalibrasi filem menggunakan ketumpatan optik terhadap dos juga diselidik, dalam julat dos yang digunakan dalam radioterapi IMRT di Hospital Kanser Mount Miriam.
In this project, Gafchromic film (type EBT) as an evaluation tool for quality assurance was studied. The dosimetric features of a EBT film was analysed before it was used in IMRT dose verifications. The film was scanned using an Epson V700 document scanner and then analysed using Image-J and Omni-pro softwares. The characteristics of the scanner using these softwares were also evaluated. The film was calibrated using optical density against dose in the dose range used in IMRT radiotherapy at the Mount Miriam Cancer hospital.
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