The comparison of dosimetric properties between gafchromic ebt-2 film and rtqa film in high energy photon beam and high energy electron beam
The aim of this work was to compare the dosimetric properties between Gafcromic EBT- 2 Film and Gafchromic RTQA Film in high energy photon beam and high energy electron beam. For calibration purpose, both films were cut into 3 cm x 3 cm and irradiated from 0 cGy to 600 cGy in 6 MeV, 9 MeV electro...
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| Main Author: | |
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| Format: | Monograph |
| Language: | English |
| Published: |
Universiti Sains Malaysia
2016
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| Subjects: | |
| Online Access: | http://eprints.usm.my/61241/1/NOR%20FATHIN%20HALINA%20BINTI%20NAZLIE%20LEONG%20-%20e.pdf http://eprints.usm.my/61241/ |
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| Summary: | The aim of this work was to compare the dosimetric properties between Gafcromic EBT-
2 Film and Gafchromic RTQA Film in high energy photon beam and high energy electron beam.
For calibration purpose, both films were cut into 3 cm x 3 cm and irradiated from 0 cGy to 600
cGy in 6 MeV, 9 MeV electron beam and 6 MV, 10 MV photon beam. For measuring percentage
depth dose and beam profile, another RTQA film and EBT-2 film was irradiated with 400 MU.
Then, all the film was scan by using Gafchromic Film Scanner (Flatbed Scanner EPSON
EXPRESSION 10000 XL) after 24 hr irradiated. The result was analyzed by using Verisoft
Software 5.1. The result shown EBT-2 film is more sensitive up to 6 Gy compare to RTQA film.
The result of percentage depth dose for both films were compare to the result of ionization
chamber and treatment planning system. The EBT-2 film shown in a good agreement with
ionization chamber and treatment planning system compare to RTQA film. All the results of
beam profile for RTQA film seen in a good agreement with EBT-2 film in terms of beam
flatness and penumbra size. As a conclusion, the EBT-2 film is more suitable to be used in
measured PDD and beam profile in high energy electron and photon beam. |
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