the establishment of optically stimulated luminescence

The Establishment of Optically Stimulated Luminescence (OSLD’s)

Dosimeters Studies in Universiti Teknologi Malaysia

(UTM)Assoc. Prof. Dr. Suhairul Hashim

Physics Department, Faculty of Science, Universiti Teknologi Malaysia, Johor Bahru, Malaysia.

Centre for Sustainable Nanomaterials (CSNano), Ibnu Sina Institute for Scientific and Industrial Research (ISI-SIR), Universiti Teknologi Malaysia, 81310 UTM Skudai, Johor, Malaysia.

Content

101

102

103

104

1

1

UTM at a Glance

Highlights on OSL research facilities in UTM

Research Direction

Research Performance 2017-2019

Conclusion Remarks

Conclusion Remarks

105

Welcome To

UNIVERSITI TEKNOLOGI MALAYSIA

UTM KUALA LUMPUR

CAMPUS

(35 hectares)

UTM JOHOR BAHRU

CAMPUS

(1,148 hectares)

innovative entrepreneurial global

UTM KUALA LUMPUR

CAMPUS

(35 hectares)


[1904] Treacher Technical School, Weld Road

[1925] Technical School, Jalan Briickfields --- JKR

[1930] Technical School, High Street

Research University 2010

Universiti Teknologi Malaysia (UTM) 1975

National Institute of Technology (ITK) University Status

1972

[1960] Technical College – Professional Programmes

[1955] Technical College, Jalan Gurney

[1946] Technical College – Diploma

[1906] Technical School, BatuLane , Bukit Nanas

Autonomous University 2012

UTM’s Journey:

From Technical School to

Research University


UTM at a Glance: Faculties

RANKINGS & RATINGS

★★★★★★Malaysia Research Assessment

(MyRA)

Top 1%QS World University Rankings

★★★★★★Rating for Higher Education

Institutions in Malaysia (SETARA)

#129THE Asia University Rankings

SOCIAL SCIENCES

Built Environment

Education

International Business School

Islamic Civilization

Language Academy

Management

Perdana School of Science, Technology and Innovation Policy

ENGINEERING

Civil Engineering

Biosciences and Medical Engineering

Electrical Engineering

Mechanical Engineering

Chemical and Energy Engineering

SCIENCE & TECHNOLOGY

Science

Computing

Geoinformation & Real Estate

Razak School of Engineering and Advanced Technology

Malaysia-Japan International Institute of Technology

Advanced Informatics School

23kstudents

12kpostgraduates

5kPhD PGs

1Student statistics based on headcount as of

Dec 2017

UTM at a Glance: Faculties

RANKINGS & RATINGS

★★★★★★Malaysia Research Assessment (MyRA)

Top 1%QS World University Rankings

★★★★★★Rating for Higher Education

Institutions in Malaysia (SETARA)

#129THE Asia University Rankings

23kstudents

12kpostgraduates

5kPhD PGs

1Student statistics based on headcount as of Dec 2017

Synergy 4.0

Engineering

Science

Social Sciences & Humanities

Razak Faculty of Technology & Informatics

Malaysia-Japan International Institute of Technology

Azman Hashim International Business School

Built Environment & Surveying

UTM at a Glance: Research Capacity

HIGHER INSTITUTION CENTRE OF EXCELLENCE (HICoE)

6 CENTRE OF EXCELLENCE

Each of our centres of excellence have a more specific, in-depthfocus area & align their resources towards being recognized as thereferral centre for their scientific contribution.

4UTM four HICoEs in Malaysia, each championing a nichearea entrusted to them by the nation, ranging from 5Gtechnology to vibration engineering.

RESEARCH INSTITUTES 6One of the success stories of UTM where we grouptogether research centres with similar focus areas &established Research Institutes. The institutes has sinceperform better & manage to rival our top HICoE. 170+ RESEARCH GROUP

The smaller nucleus of our research entities where weencourage working in either single-discipline or multi-disciplinegroup.

1652 ACADEMICIANS

Since the inception of research university, we have build a strongresearch team led by over 1,600 academic staffs of which 86% ofthem are PhD holders.

5RESEARCH ALLIANCE (NICHE AREA)

Research in UTM are guided by the five niche areas(research alliance) built upon our conventional strength inengineering while exploring other emerging fields.

FACILITIES

OSL Facilities in Physics Department, Faculty of Science, UTM

MicroStar OSL Reader

Pocket Annealer

Dosimeter

nanoDot™ OSLD (screened and unscreened)

InLight ® OSLD (Personnel Monitoring)

InLight ® OSLD (Environmental Monitoring)

OSL READER (2 UNIT) IN PHYSICS

DEPARTMENT, FACULTY OF SCIENCE,

UTM MicroStar OSL Reader

Technical Specification

OperationAl2O3 with OSL is linear

from 10 µGy to >100 Gy

Speed Readout in 13 sec.

Capacity 1 slide (1 dosimeter)

LED array 36

Size(cm) 11(H) x 33(W) x 23(D)

Power

requirements

110-220 V, 1.5 amps, 50-60

Hz

Weight 8 kg

Bar code inputkeyboard; external bar code

reader; file upload

Monitoring

Position Dial

(DRK, CAL, LED,

E1,E2,E3,E4)

System

Interface

Dosimeter

Slot

Pocket Annealer

Dosimeter Slot


Dimensions(cm) 28(H) x 28(L) x 11.5(W)

Weight 5.4 kg

110-220V 1.6 A / 50-60 Hz

Load capacity Manual (1 dosimeter)

Annealing Time

Time range from 1 to 255

seconds.

Time adjustment by step of

1 second

Annealing

Performance

10 seconds of exposure to

reach a value less than 0.1

mSv with an initial dose <

to 1 mSv

Operating

Performance-10℃ to 40 ℃

Hydrometry < 90 %

Dosimeter

1. nanoDot™ OSLD


Dose operating

range

For general applications, useful dose

range 10 µGy to >100Gy;

Lower Limit of

Detection (LLD)0.1 mGy

Useful Energy Range From 5 keV to 20 MeV

Energy Dependence

Accurate within ±10% over diagnostic

energy range 70-140 kvP; within ±5%

for photons and electrons from 5 MeV-

20MeV

Accuracy (total

uncertainly - single

measurement)

±10% with standard nanoDot;

±5.5% with screened nanoDot

Precision±5%, k=2 for both standard and

screened nanoDot

Dimension (H×W×D) 10 mm×10 mm×0.2 mm

Mass density 1.03 g cm3

Serial

Number

Our Facilities:

Standard nanoDot (Unscreen) : ~100 pcs.

Screened nanoDot : ~400 pcs.

2D Bar

Code

2. InLight ® OSLD (Personnel Monitoring)

Our Facilities:

InLight ® OSLD (XA) : ~73 pcs.

2D Bar Code

Serial Number

Specifications

Radiation

TypeEnergy Range

Minimum Dose

Equivalent

Reported

Photon

(x or

gamma ray)

5 keV to 20 MeV5 mrem

(50 μSV)

Beta

Particle

150 keV to 10 MeV

(expressed as

average energy)

10 mrem

(100 μSV)

3. InLight ® OSLD (Environmental Monitoring)

Our Facilities:

InLight ® OSLD (EX) : ~186 pcs.

Serial Number

2D Bar Code

Specifications

Radiation

TypeEnergy Range

Minimum

Ambient Dose

Equivalent

Reported

Photon

(x or gamma

ray)

5 keV to 20 MeV

5 mrem

(50 μSV)

High Sensitivity:

0.1 mrem

(1 μSv)

Beta Particle

150 keV to 10 MeV

(expressed as

average energy)

10 mrem

(100 μSV)

High Sensitivity:

20 mrem

(200 μSV)

Component in XA and EX OSLDs

Element Position

(primary filter)

Filtration

(approx mg∙cm-2)Use

E1 OW

(open window)29 Beta response

E2PL

(plastic)275* Beta characterization

photon response

E3 Al

(aluminum)375* Photon characterization

E4Cu

(copper)545* Photon response

and characterization

*Add approximately 120 mg/cm2 for the outer holder.

E1

E2

E3

E4

: Hp (10) Deep Dose

: Hp (3) Lens Dose

: Hp (0.07) Shallow Dose

: Beta Dose

(Source: Nagase Landauer Ltd.)

RESEARCH STUDY Personnel Effective Dose of Fluoroscopy-Guided Interventional in National

Cancer Institute of Malaysia

OBJECTIVES OF THE

STUDY

1. To investigate the performance of Al2O3:C based OSL system for personnel

dosimetry.

2. To estimate the personnel effective dose for interventional radiology staff

during the fluoroscopy-guided interventional procedure.

3. To determine the respective eyes lens dose with position of the interventional

radiologist during the fluoroscopy-guided interventional procedure.

SIGNIFICANCE OF THE

STUDY

The information that will be derived from this study will give advantage to perform

new future works involving patient and personnel dose with different modality and

procedure. It’s will improve personnel awareness of radiation exposure results from

medical exposures to keep the patient and personnel radiation dose as low as

reasonably achievable.

CURRENT PROGRESS In progress

COLLABORATION 1. Malaysian Nuclear Agency

2. National Cancer Institute of Malaysia.

Sample characterisation in Malaysia Nuclear AgencyInterventional Fluoroscopy Guided (IFG) procedure in

National Cancer Institute of Malaysia

1

CURRENT RESEARCH

Ratna Suffhiyanni Omar (PSC163042) Register on 20/2/17

RESEARCH STUDY Anthropomorphic Phantom Organ Dose Assessment Using Optically

Stimulated Luminescence Dosimeters Unified in Multi-Detector Computed

Tomography

OBJECTIVES OF THE

STUDY

1. To calibrate the thermoluminescence dosimeter (TLD-100™) and nanoDot™

optically stimulated luminescence dosimeter (OSLD) in dose mapping

measurement.

2. To implement the standardized CT test parameters used in QC protocol from

different MDCT models.

3. To assess the organ dose profile using nanoDot™ OSLDs and standard

anthropomorphic phantom (Alderson Radiation Therapy phantom).

4. To compare dose mapping profile results using Monte Carlo (MC) simulation in

CT-Expo software.

SIGNIFICANCE OF THE

STUDY

1. To ensure that the CT clinical diagnostic information at the lowest possible cost

and with the least possible radiation exposure to the patient/medical staff.

2. This study is designed and attempted to be a significance study to do more good

than harm to the patient in CT clinical diagnosis or treatment.

3. This method may pave the way of introducing the diagnostic reference level in

terms of dose distribution in different organs during CT procedures.

CURRENT PROGRESS In Progress

COLLABORATION 1. Malaysian Nuclear Agency

2. Sultanah Aminah Hospital, Johor Bahru

2

CURRENT RESEARCH

Asmah Bohari (PSC163011) Register on 23/8/16

Instrument: Constant Potential Industrial

X-ray (Model Philips MG 165).

Filter: 4.0 mm Al + 0.2 mm Cu RQT filter

Al RQT

Filter

Cu RQT

Filter

Sample characterisation in Malaysia Nuclear Agency

Dose mapping on ART

phantom

2.5 cm length, 0.7 cm diameter

19

21

22

23

20

24

RIGHTLEFT

Anthropomorphic Alderson Radiation Therapy

phantom (model number ARTM1092)

RESEARCH STUDY Determination of Optically Stimulated Luminescence Dosimetric

Characteristics and Suitability for Entrance Surface Dose Assessment in

Diagnostic X-ray Examinations

OBJECTIVES OF THE

STUDY

1. To calibrate and evaluate the stability of the new Landauer InLight MicroStar

OSL dosimetry system.

2. To investigate the dosimetric characteristics of the nanoDots OSLD including

repeatability, reproducibility, dose linearity, signal depletion, element correction

factor, angular dependence, and energy dependence in radiography energy

range from 40 kV – 150 kV with typical doses ranging from 0 – 20 mGy.

3. To assess the suitability of the nanoDots OSLD for direct and indirect ESD

measurements in Chest, Abdomen, Skull, and Thoracic spine radiography, with

associated eye, thyroid and gonad doses using adult anthropomorphic phantom

and compare with CALDose_X 5.0 software calculations.

SIGNIFICANCE OF THE

STUDY

1. This research could serve as a baseline for OSL dosimetry technique in UTM,

and as reference for future studies in similar research.

2. Provide an improved calibration data for the new OSL system suitable for

implementation of dose assessment in general radiography.

3. Introduces new sets of :- energy correction factors to correct for energy

differences in radiography (40 – 150 kV) - element correction factors for new

batch of nanoDots OSLD.

4. Ascertain the suitability of the nanoDots OSLD for ESD measurements in routine

X-ray examinations (general and dual energy radiography).

CURRENT PROGRESS Completed on 12/9/18

COLLABORATION 1. Malaysia Nuclear Agency

2. National Cancer Institute of Malaysia

3. Diagnostic Imaging Laboratory, Faculty of Health Sciences, UKM, Kuala Lumpur

4. Permai Hospital, Johor Bahru

3

CURRENT RESEARCH

Yahaya Musa(PSC153022) Register on 23/9/15

Dosimetric characterization

Direct Measurement

• OSLD place directly on the whole-body phantom

• Phantom (weight, thickness, e.t.c) and exposure

parameters (kVp, mAs, e.t.c) were recorded

Indirect Measurement

• OSLD place at sufficient distance dFTD from the X-

ray tube in the absence of backscatter material

ESD Measurement

Research Performance 2017-2019

1. Y. Musa, S. Hashim, S.K. Ghoshal, D.A. Bradley, N.E. Ahmad, M.K.A. Karim, A. Hashim and A.B.A. Kadir,

(2018), “General radiographic attributes of optically stimulated luminescence dosimeters: A basic insight”.

Radiation Physics and Chemistry Vol. 147, pp 1-6. (Impact Factor 1.315; Q1 in Nuclear Science &

Technology)

2. S. Hashim, Y. Musa, S.K. Ghoshal, N.E. Ahmad, I.H. Hashim, M. Yusop, D.A. Bradley, and A.B.A. Kadir,

(2018), “Optically stimulated Al2O3:C luminescence dosimeters for teletherapy: Hp(10) performance

evaluation”. Applied Radiation and Isotopes Vol. 135, pp 7 -11. (Impact Factor 1.128; Q3 in Nuclear Science

& Technology)

3. Yahaya Musa, Suhairul Hashim, David A. Bradley, Muhammad Khalis A. Karim, and Asmaliza Hashim,

(2017), “Reproducibility assessment of commercial optically stimulated luminescence system in diagnostic X-

ray beams”. Journal of Radioanalytical and Nuclear Chemistry Vol. 314, pp 2029 – 2036. (Impact Factor

1.282; Q2 in Nuclear Science & Technology)

4. Y. Musa, S. Hashim, M.K.A. Karim, K.A. Bakar, W.C. Ang, N. Salehhon, (2017),“Response of optically

stimulated luminescence dosimeters subjected to X-rays in diagnostic energy range”. Journal of Physics:

Conference Series Vol 851, pp 012001.

5. Y. Musa, S. Hashim, S.K. Ghoshal, D.A. Bradley, N.E. Ahmad, M.K.A. Karim, A. Sabarudin (Under Review-

2019), “Effectiveness of Al2O3:C OSL dosimeter toward entrance surface dose measurement in common X-ray

diagnostics: Outperforming traits”. Radiation Physics and Chemistry. (Impact Factor 1.315; Q1 in Nuclear

Science & Technology)

6. A. Bohari, S. Hashim, S.K.Ghoshal and S. N. M. Mustafa, (In-press-2019), “Assessment Of Interchangeability

Of Personal Effective Dose Algorithms In Fluoroscopy-guided Interventions Using Bland-altman Analysis”

Radiation Protection Dosimetry. (Impact Factor 0.822; Q3 in Nuclear Science & Technology)

Inter-comparison report

Organization : Universiti Teknologi Malaysia

Reading Date : 17-Jan-19

set ID Reading dose (mSv) Hp(10) (mSv) Uncer (mSv)

Control

XA02455778V 0.210

XA00091979T 0.160

XA01712567C 0.150

AVERAGE DOSE 0.173

A

XA018395662 0.750 0.577

0.125

XA01839680A 0.500 0.327XA016368455 0.730 0.557

B

XA01997748L 3.340 3.167

0.475

XA00359291I 3.450 3.277XA01373128D 4.290 4.117

C

XA01473414F 0.490 0.317

0.025

XA01622543L 0.520 0.347XA01839801C 0.470 0.297

D

XA01622746B 2.680 2.507

0.165

XA018771169 2.350 2.177XA02006661P 2.670 2.497

E

XA01373354E 0.780 0.607

0.095

XA01839498X 0.590 0.417XA019977401 0.590 0.417

F

XA01997941V 4.700 4.527

0.915

XA016267178 6.530 6.357XA017393659 5.900 5.727

G

XA01997855O 0.490 0.317

0.020

XA01997824T 0.530 0.357XA01840207J 0.530 0.357

H

XA01839800E 2.740 2.567

0.120

XA02006695E 2.900 2.727XA01839562A 2.980 2.807

BKG

XA02335338C 0.200

XA02006696C 0.160

XA01373363F 0.200

INTERCOMPARISON OF PERSONAL

DOSE EQUIVALENT (Hp(10)) STUDY

Contributions of the Study

This research could serve as abaseline for OSL dosimetrytechnique in UTM, and asreference for future studies insimilar research.

Provide an improved calibration

data for the new OSL system

suitable for implementation of

dose assessment.

Introduces new sets of :

• energy correction factors tocorrect for energy differences inradiography (40 – 150 kV)

• element correction factors fornew batch of nanoDots OSLD

Ascertain the suitability of thenanoDots OSLD for ESDmeasurements in routine medicaldiagnosis examinations.


Thank You

the establishment of optically stimulated luminescence

Documents