Feasibility Of Using Ebt2 Radiochromic Film And Mosfet For Radiotherapy Dose Measurement In Nasopharynx Cancer Treatment

Nasopharynx cancer (NPC)’s tumour volume located at the head and neck which nearby with bundles of organ at risk (OAR). Therefore, it is important to have radiotherapy dose verification prior to the treatment. This is to make sure adequate dose delivered to tumour volume whereas protect well to orga...

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Main Author:	Eng, Kae Yann
Format:	Thesis
Language:	English
Published:	2017
Subjects:	QC1 Physics (General)
Online Access:	http://eprints.usm.my/47521/1/ENG%20KAE%20YANN.pdf%20cut.pdf
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id	my-usm-ep.47521
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spelling	my-usm-ep.475212020-10-22T03:03:09Z Feasibility Of Using Ebt2 Radiochromic Film And Mosfet For Radiotherapy Dose Measurement In Nasopharynx Cancer Treatment 2017-10 Eng, Kae Yann QC1 Physics (General) Nasopharynx cancer (NPC)’s tumour volume located at the head and neck which nearby with bundles of organ at risk (OAR). Therefore, it is important to have radiotherapy dose verification prior to the treatment. This is to make sure adequate dose delivered to tumour volume whereas protect well to organ at risk. Dosimetry response of both Metal Oxide Semiconductor Field Effect Transistor (MOSFET) and Radiochromic EBT2 film were characterised before the dose verification of radiotherapy treatment was conducted. The characterisation of Radiochromic EBT2 film was ruled out from the tests which contributed combined standard uncertainty 5.05%. Tests are film reproducibility (0.25%), film darkening effect (0.25%), field size dependence (4.98%), and angular dependence (2.01%). Seven experiments were undergone to contribute 3.48% combined standard uncertainty for MOSFET. The experiments are MOSFET reproducibility (1.36%), fading effect (2.00%), perturbation (2.58%), linearity (2.88%), field size dependence (2.90%), angular dependence (3.36%), SSD dependence (2.59%). After the characterisation of Radiochromic EBT2 film and MOSFET, treatment plan dose verification was conducted in vitro. It showed a trend that measured doses higher than calculated doses by Treatment Planning System (TPS). TPS doses verified both dosimeters doses within 10% variation. Thus, both Radiochromic EBT2 film and MOSFET were suitable to be used as radiotherapy 2017-10 Thesis http://eprints.usm.my/47521/ http://eprints.usm.my/47521/1/ENG%20KAE%20YANN.pdf%20cut.pdf application/pdf en public masters Universiti Sains Malaysia Pusat Pengajian Sains Fizik (School of Physics)
institution	Universiti Sains Malaysia
collection	USM Institutional Repository
language	English
topic	QC1 Physics (General)
spellingShingle	QC1 Physics (General) Eng, Kae Yann Feasibility Of Using Ebt2 Radiochromic Film And Mosfet For Radiotherapy Dose Measurement In Nasopharynx Cancer Treatment
description	Nasopharynx cancer (NPC)’s tumour volume located at the head and neck which nearby with bundles of organ at risk (OAR). Therefore, it is important to have radiotherapy dose verification prior to the treatment. This is to make sure adequate dose delivered to tumour volume whereas protect well to organ at risk. Dosimetry response of both Metal Oxide Semiconductor Field Effect Transistor (MOSFET) and Radiochromic EBT2 film were characterised before the dose verification of radiotherapy treatment was conducted. The characterisation of Radiochromic EBT2 film was ruled out from the tests which contributed combined standard uncertainty 5.05%. Tests are film reproducibility (0.25%), film darkening effect (0.25%), field size dependence (4.98%), and angular dependence (2.01%). Seven experiments were undergone to contribute 3.48% combined standard uncertainty for MOSFET. The experiments are MOSFET reproducibility (1.36%), fading effect (2.00%), perturbation (2.58%), linearity (2.88%), field size dependence (2.90%), angular dependence (3.36%), SSD dependence (2.59%). After the characterisation of Radiochromic EBT2 film and MOSFET, treatment plan dose verification was conducted in vitro. It showed a trend that measured doses higher than calculated doses by Treatment Planning System (TPS). TPS doses verified both dosimeters doses within 10% variation. Thus, both Radiochromic EBT2 film and MOSFET were suitable to be used as radiotherapy
format	Thesis
qualification_level	Master's degree
author	Eng, Kae Yann
author_facet	Eng, Kae Yann
author_sort	Eng, Kae Yann
title	Feasibility Of Using Ebt2 Radiochromic Film And Mosfet For Radiotherapy Dose Measurement In Nasopharynx Cancer Treatment
title_short	Feasibility Of Using Ebt2 Radiochromic Film And Mosfet For Radiotherapy Dose Measurement In Nasopharynx Cancer Treatment
title_full	Feasibility Of Using Ebt2 Radiochromic Film And Mosfet For Radiotherapy Dose Measurement In Nasopharynx Cancer Treatment
title_fullStr	Feasibility Of Using Ebt2 Radiochromic Film And Mosfet For Radiotherapy Dose Measurement In Nasopharynx Cancer Treatment
title_full_unstemmed	Feasibility Of Using Ebt2 Radiochromic Film And Mosfet For Radiotherapy Dose Measurement In Nasopharynx Cancer Treatment
title_sort	feasibility of using ebt2 radiochromic film and mosfet for radiotherapy dose measurement in nasopharynx cancer treatment
granting_institution	Universiti Sains Malaysia
granting_department	Pusat Pengajian Sains Fizik (School of Physics)
publishDate	2017
url	http://eprints.usm.my/47521/1/ENG%20KAE%20YANN.pdf%20cut.pdf
_version_	1747821795066511360

Feasibility Of Using Ebt2 Radiochromic Film And Mosfet For Radiotherapy Dose Measurement In Nasopharynx Cancer Treatment

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