Abdullah, Nazifah
(2004)
Comparative study of radiation dose measurement around 1921r source with manual calculation.
Other thesis, Universiti Sains Malaysia.
Abstract
The purpose this study is to measure dose around an HDR 1921r source in
a vaginal-applicator. The dosimeters used were gafchromic film, and LiF
Thermoluminescent dosimeter (TLD 100 chip). The manual calculation was
carried out to compare the results with measurement.
Gafchromic film was calibrating using 6MV photon beam, to obtain the
relationship between absorbed dose and film response. In this study
gafchromic film and LiF Thermoluminescent was setup in three different
configurations. The remote after loading machines was programmed to send
the source C921r) move through a cylinder to the programmed position and
dwell time.
The results showed that the manual calculation was higher than TLD and
film dosimeter.
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