Muhammad Safwan Ahmad Fadzil

Muhammad Safwan Ahmad Fadzil
Universiti Kebangsaan Malaysia | ukm · School of Diagnostic and Applied Health Sciences

Doctor of Philosophy (Applied Physics)

About

11
Publications
1,364
Reads
How we measure 'reads'
A 'read' is counted each time someone views a publication summary (such as the title, abstract, and list of authors), clicks on a figure, or views or downloads the full-text. Learn more
49
Citations
Introduction
Muhammad Safwan Bin Ahmad Fadzil is a Senior Lecturer at the Faculty of Health Sciences, Universiti Kebangsaan Malaysia. He received his PhD degree in Applied Physics (Dosimetry) from Universiti Putra Malaysia. Currently, he teaches undergraduates on radiotherapy dosimetry, physics in radiotherapy, radiotherapy instrumentations and procedure in radiotherapy. His research focuses on the development of a silica-based dosimeter for radiotherapy postal dose audit of megavoltage photon beams.

Publications

Publications (11)
Article
Full-text available
Purpose We have conducted for the first time a Malaysian postal dosimetry audit of external beam under non-reference conditions by evaluating the output performance while screening for systematic errors within the dosimetry chain. The potential use from the choice of detector were investigated along with the search for other sources of discrepancie...
Article
This study compares the practicality of Ge-doped silica optical fibres as a potential remote dosimeter for radiotherapy postal dosimetry audit in non-reference conditions with a commercial thermoluminescence dosimeter (TLD-100). The optical fibre system consists of two types of fibres: cylindrical (CF) and flat fibres (FF). The dosimetric character...
Article
Full-text available
The development of optical fibres technology grows in response to seeking a radiation detector with better thermoluminescence (TL) performance. Concerning the dosimetric characterization study by previous researchers, this research work has widened the exploration to optimize the time-temperature profile (TTP) in connection with the glow curve form...
Article
Full-text available
The thermoluminescence kinetic parameters of Ge-doped flat fibre have been investigated comprehensively using the computerized glow curve deconvolution analysis. The Ge-doped flat fibre was irradiated to 6 MV and 10 MV photon beam with dose ranging from 100 cGy to 300 cGy. Analysis was done using WinGCF software on the dependence of the glow curve...
Conference Paper
Full-text available
The aim of this study was to investigate the thermoluminescence (TL) response of fabricated 2.3 mol% and 6.0 mol% germanium (Ge) doped flat optical fibres to proton irradiation. The fundamental dosimetric characteristics of the fibres have been investigated including dose linearity, reproducibility and fading. The thermoluminescent dosimeters (TLDs...
Article
Purpose: The dosimetry characteristics of the fabricated Germanium doped cylindrical fibre (CF) and flat fibres (FF) were evaluated including linearity, repeatability, energy dependence, dose rate dependence, angular dependence and fading. The TL kinetic parameters of Ge-doped CF and FF have been investigated using the computerized glow curve decon...
Article
Full-text available
The influence of elevated germanium concentration on the thermoluminesence characteristics of a novel form of fabricated flat optical fibre was examined. All the samples were irradiated with two nominal photon energies (6 MV and 10 MV) and 1.25 MeV gamma energy. Flat fibres with 10 mol % Ge concentration provided the superior TL yield compared agai...
Article
Full-text available
We examine the influence of elevated dopant concentration on the thermoluminescence characteristics of novel Ge-doped silica fibres. Basic dosimetric characteristics of the TL media were obtained, including linearity, reproducibility, energy dependence, fading, minimum detectable dose and glow curve analysis, use being made of a 60Co gamma irradiat...
Poster
Full-text available
Radiotherapy techniques need a high precision and consistency in the dose distribution to prevent any radiological accidents, thus the demand for proper quality assurances is needed . The dosimetric audit has an important role to ensure continuing improvement in the quality in radiation treatment. In this respect, this study was conducted to evalua...
Article
Full-text available
Present investigation aims to establish the dosimetric characteristics of a novel fabricated flat fibre TLD system for postal radiotherapy dose audits. Various thermoluminescence (TL) properties have been investigated for five sizes of 6 mol% Ge-doped optical fibres. Key dosimetric characteristics including reproducibility, linearity, fading and en...

Network

Cited By