Al2O3:C and LiF: Mg, Ti characterisations at 100–150 kV energy range for computed tomography dose measurement
Performance characterisation has been carried out of nanoDot™ OSLDs and TLD-100™, validating their use for diagnostic x-ray dose profile assessments. Investigations include optical annealing, signal depletion, signal fading, dose-response, sensitivity, and energy dependence. Both dosimeter types wer...
Saved in:
Main Authors: | , , , , , , |
---|---|
Format: | Article |
Published: |
Elsevier Ltd
2022
|
Subjects: | |
Online Access: | http://eprints.utm.my/103898/ http://dx.doi.org/10.1016/j.radphyschem.2022.110365 |
Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
id |
my.utm.103898 |
---|---|
record_format |
eprints |
spelling |
my.utm.1038982023-12-04T07:50:45Z http://eprints.utm.my/103898/ Al2O3:C and LiF: Mg, Ti characterisations at 100–150 kV energy range for computed tomography dose measurement Omar, Ratna Suffhiyanni Hashim, S. Bradley, David A. Abdul Karim, Muhammad Khalis Kobayashi, Ikuo Abdul Kadir, Ahmad Bazlie Hashim, Asmaliza QC Physics Performance characterisation has been carried out of nanoDot™ OSLDs and TLD-100™, validating their use for diagnostic x-ray dose profile assessments. Investigations include optical annealing, signal depletion, signal fading, dose-response, sensitivity, and energy dependence. Both dosimeter types were exposed using the Constant Potential Industrial X-ray (Model Philips MG 165) in Standard Radiation Qualities (RQT) procedure located in Nuclear Malaysia, Bangi. OSLD annealing using a 14 W compact fluorescent lamp showed an average signal loss of ∼93% as a result of 60 min of illumination. For dosimetric signal depletion, screened nanoDot™ OSLDs gave rise to the most favorable performance, with a mean signal loss of 1.0% per reading. In respect of signal fading, similar favorable performance was found for the screened nanoDot™ OSLDs, after a stabilisation period of 11–12 days post-irradiation, the average reading decreased by ∼1% over a further 17 days. For doses up to 500 mGy the TLD-100™ and screened nanoDot™ OSLDs both provide a highly linear response, with a regression coefficient of 0.999 in both cases. Linear energy dependence was found for RQT spectra from 100 to 150 kV. Elsevier Ltd 2022-10 Article PeerReviewed Omar, Ratna Suffhiyanni and Hashim, S. and Bradley, David A. and Abdul Karim, Muhammad Khalis and Kobayashi, Ikuo and Abdul Kadir, Ahmad Bazlie and Hashim, Asmaliza (2022) Al2O3:C and LiF: Mg, Ti characterisations at 100–150 kV energy range for computed tomography dose measurement. Radiation Physics and Chemistry, 199 (NA). pp. 1-5. ISSN 0969-806X http://dx.doi.org/10.1016/j.radphyschem.2022.110365 DOI:10.1016/j.radphyschem.2022.110365 |
institution |
Universiti Teknologi Malaysia |
building |
UTM Library |
collection |
Institutional Repository |
continent |
Asia |
country |
Malaysia |
content_provider |
Universiti Teknologi Malaysia |
content_source |
UTM Institutional Repository |
url_provider |
http://eprints.utm.my/ |
topic |
QC Physics |
spellingShingle |
QC Physics Omar, Ratna Suffhiyanni Hashim, S. Bradley, David A. Abdul Karim, Muhammad Khalis Kobayashi, Ikuo Abdul Kadir, Ahmad Bazlie Hashim, Asmaliza Al2O3:C and LiF: Mg, Ti characterisations at 100–150 kV energy range for computed tomography dose measurement |
description |
Performance characterisation has been carried out of nanoDot™ OSLDs and TLD-100™, validating their use for diagnostic x-ray dose profile assessments. Investigations include optical annealing, signal depletion, signal fading, dose-response, sensitivity, and energy dependence. Both dosimeter types were exposed using the Constant Potential Industrial X-ray (Model Philips MG 165) in Standard Radiation Qualities (RQT) procedure located in Nuclear Malaysia, Bangi. OSLD annealing using a 14 W compact fluorescent lamp showed an average signal loss of ∼93% as a result of 60 min of illumination. For dosimetric signal depletion, screened nanoDot™ OSLDs gave rise to the most favorable performance, with a mean signal loss of 1.0% per reading. In respect of signal fading, similar favorable performance was found for the screened nanoDot™ OSLDs, after a stabilisation period of 11–12 days post-irradiation, the average reading decreased by ∼1% over a further 17 days. For doses up to 500 mGy the TLD-100™ and screened nanoDot™ OSLDs both provide a highly linear response, with a regression coefficient of 0.999 in both cases. Linear energy dependence was found for RQT spectra from 100 to 150 kV. |
format |
Article |
author |
Omar, Ratna Suffhiyanni Hashim, S. Bradley, David A. Abdul Karim, Muhammad Khalis Kobayashi, Ikuo Abdul Kadir, Ahmad Bazlie Hashim, Asmaliza |
author_facet |
Omar, Ratna Suffhiyanni Hashim, S. Bradley, David A. Abdul Karim, Muhammad Khalis Kobayashi, Ikuo Abdul Kadir, Ahmad Bazlie Hashim, Asmaliza |
author_sort |
Omar, Ratna Suffhiyanni |
title |
Al2O3:C and LiF: Mg, Ti characterisations at 100–150 kV energy range for computed tomography dose measurement |
title_short |
Al2O3:C and LiF: Mg, Ti characterisations at 100–150 kV energy range for computed tomography dose measurement |
title_full |
Al2O3:C and LiF: Mg, Ti characterisations at 100–150 kV energy range for computed tomography dose measurement |
title_fullStr |
Al2O3:C and LiF: Mg, Ti characterisations at 100–150 kV energy range for computed tomography dose measurement |
title_full_unstemmed |
Al2O3:C and LiF: Mg, Ti characterisations at 100–150 kV energy range for computed tomography dose measurement |
title_sort |
al2o3:c and lif: mg, ti characterisations at 100–150 kv energy range for computed tomography dose measurement |
publisher |
Elsevier Ltd |
publishDate |
2022 |
url |
http://eprints.utm.my/103898/ http://dx.doi.org/10.1016/j.radphyschem.2022.110365 |
_version_ |
1784511518930370560 |
score |
13.160551 |