Durian Seed As A Potential Substrate For Bolus In Radiotherapy

Tiga jenis bolus telah dihasilkan dengan menggunakan tiga jenis komposisi dengan beza nisbah polivinil alkohol (PVA) terhadap gam biji durian. Nisbah PVA kepada gam biji durian untuk bolus jenis pertama ialah 1:9; 3:7 dan 5:5. Bolus yang dihasilkan diciri berdasarkan kepada sifat-sifat mekanikal sep...

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Main Author:	Ahmad Lothfy, Fairuzdzah
Format:	Thesis
Language:	English
Published:	2015
Subjects:	QC1 Physics (General)
Online Access:	http://eprints.usm.my/31796/1/FAIRUZDZAH_BINTI_AHMAD_LOTHFY.pdf
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id	my-usm-ep.31796
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spelling	my-usm-ep.317962019-04-12T05:25:43Z Durian Seed As A Potential Substrate For Bolus In Radiotherapy 2015-06 Ahmad Lothfy, Fairuzdzah QC1 Physics (General) Tiga jenis bolus telah dihasilkan dengan menggunakan tiga jenis komposisi dengan beza nisbah polivinil alkohol (PVA) terhadap gam biji durian. Nisbah PVA kepada gam biji durian untuk bolus jenis pertama ialah 1:9; 3:7 dan 5:5. Bolus yang dihasilkan diciri berdasarkan kepada sifat-sifat mekanikal seperti kekuatan ketegangan, terikan, dan kelenturan. Akhirnya, kesemua bolus yang dihasilkan mempunyai kekuatan ketegangan yang kecil. Kekuatan tegangan maksimum yang boleh dicapai untuk bolus 1:9 ialah 0.083 MPa, bolus 3:7 ialah 0.323 MPa dan bolus 5:5 ialah 0.786 MPa. Peratus terikan bagi setiap jenis bolus yang dihasilkan memenuhi keperluan minimum iaitu melebihi 50 %. Kesemua bolus yang dihasilkan mempunyai nilai Modulus Young yang rendah di mana memenuhi satu keperluan bagi bolus yang digunakan dalam radioterapi iaitu kurang daripada 100 MPa. Nilai ini penting untuk menghasilkan bolus dengan kelenturan yang baik. Bolus yang dihasilkan perlu mempunyai sifat kesetaraan tisu. Justeru, adalah satu keperluan untuk mengukur ketumpatan fizikal, ketumpatan elektron relatif dan faktor transmisi. Three types of bolus were fabricated using three types of composition with different ratios of polyvinyl alcohol (PVA) to durian seed gums. The ratio of PVA to durian seed gum were 1:9; 3:7 and 5:5. The fabricated bolus was characterized based on the mechanical properties such as tensile strength, strain, and flexibility. Eventually, all bolus composition that were prepared had low tensile strength. The maximum tensile strength for bolus 1:9 was 0.083 MPa, bolus 3:7 was 0.323 MPa and bolus 5:5 was 0.786 MPa. The strain of every type of fabricated bolus fulfilled the minimum requirement which was more than 50%. All types of bolus had less than 100 MPa value of Young‟s Modulus which fulfilled one of the requirements for bolus to be used in radiotherapy. This value was important to produce bolus with good flexibility. The fabricated bolus had tissue equivalent properties. Hence, physical density, relative electron density and transmission factor were measured. 2015-06 Thesis http://eprints.usm.my/31796/ http://eprints.usm.my/31796/1/FAIRUZDZAH_BINTI_AHMAD_LOTHFY.pdf application/pdf en public masters Universiti Sains Malaysia Pusat Pengajian Sains Fizik
institution	Universiti Sains Malaysia
collection	USM Institutional Repository
language	English
topic	QC1 Physics (General)
spellingShingle	QC1 Physics (General) Ahmad Lothfy, Fairuzdzah Durian Seed As A Potential Substrate For Bolus In Radiotherapy
description	Tiga jenis bolus telah dihasilkan dengan menggunakan tiga jenis komposisi dengan beza nisbah polivinil alkohol (PVA) terhadap gam biji durian. Nisbah PVA kepada gam biji durian untuk bolus jenis pertama ialah 1:9; 3:7 dan 5:5. Bolus yang dihasilkan diciri berdasarkan kepada sifat-sifat mekanikal seperti kekuatan ketegangan, terikan, dan kelenturan. Akhirnya, kesemua bolus yang dihasilkan mempunyai kekuatan ketegangan yang kecil. Kekuatan tegangan maksimum yang boleh dicapai untuk bolus 1:9 ialah 0.083 MPa, bolus 3:7 ialah 0.323 MPa dan bolus 5:5 ialah 0.786 MPa. Peratus terikan bagi setiap jenis bolus yang dihasilkan memenuhi keperluan minimum iaitu melebihi 50 %. Kesemua bolus yang dihasilkan mempunyai nilai Modulus Young yang rendah di mana memenuhi satu keperluan bagi bolus yang digunakan dalam radioterapi iaitu kurang daripada 100 MPa. Nilai ini penting untuk menghasilkan bolus dengan kelenturan yang baik. Bolus yang dihasilkan perlu mempunyai sifat kesetaraan tisu. Justeru, adalah satu keperluan untuk mengukur ketumpatan fizikal, ketumpatan elektron relatif dan faktor transmisi. Three types of bolus were fabricated using three types of composition with different ratios of polyvinyl alcohol (PVA) to durian seed gums. The ratio of PVA to durian seed gum were 1:9; 3:7 and 5:5. The fabricated bolus was characterized based on the mechanical properties such as tensile strength, strain, and flexibility. Eventually, all bolus composition that were prepared had low tensile strength. The maximum tensile strength for bolus 1:9 was 0.083 MPa, bolus 3:7 was 0.323 MPa and bolus 5:5 was 0.786 MPa. The strain of every type of fabricated bolus fulfilled the minimum requirement which was more than 50%. All types of bolus had less than 100 MPa value of Young‟s Modulus which fulfilled one of the requirements for bolus to be used in radiotherapy. This value was important to produce bolus with good flexibility. The fabricated bolus had tissue equivalent properties. Hence, physical density, relative electron density and transmission factor were measured.
format	Thesis
qualification_level	Master's degree
author	Ahmad Lothfy, Fairuzdzah
author_facet	Ahmad Lothfy, Fairuzdzah
author_sort	Ahmad Lothfy, Fairuzdzah
title	Durian Seed As A Potential Substrate For Bolus In Radiotherapy
title_short	Durian Seed As A Potential Substrate For Bolus In Radiotherapy
title_full	Durian Seed As A Potential Substrate For Bolus In Radiotherapy
title_fullStr	Durian Seed As A Potential Substrate For Bolus In Radiotherapy
title_full_unstemmed	Durian Seed As A Potential Substrate For Bolus In Radiotherapy
title_sort	durian seed as a potential substrate for bolus in radiotherapy
granting_institution	Universiti Sains Malaysia
granting_department	Pusat Pengajian Sains Fizik
publishDate	2015
url	http://eprints.usm.my/31796/1/FAIRUZDZAH_BINTI_AHMAD_LOTHFY.pdf
_version_	1747820490697736192

Durian Seed As A Potential Substrate For Bolus In Radiotherapy

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