Estimation of entrance skin dose (ESD) and exit dose (ED) in abdominal radiography using nanoDot optically stimulated luminescence dosimeter (OSLD)

It is essential to monitor patient’s dose to ensure the proper implementation and practices of radiation protection in diagnostic X-ray imaging and to reduce the risks of radiation exposures. Our study aimed to estimate the entrance skin dose and exit dose in abdominal radiography using nanoDot OSLD...

Full description

Bibliographic Details
Main Authors:	Sayed, Inayatullah Shah, Roslan, Nurul Shuhada, Abdul Majid, Zafri Azran
Format:	Conference or Workshop Item
Language:	English English
Published:	2019
Subjects:	QC Physics
Online Access:	http://irep.iium.edu.my/77657/ http://irep.iium.edu.my/77657/1/ISMP2019_paper_32_Revised_Abstract.pdf http://irep.iium.edu.my/77657/2/ISMP%202019%20_Latest.pdf

id	iium-77657
recordtype	eprints
spelling	iium-776572020-01-28T03:50:54Z http://irep.iium.edu.my/77657/ Estimation of entrance skin dose (ESD) and exit dose (ED) in abdominal radiography using nanoDot optically stimulated luminescence dosimeter (OSLD) Sayed, Inayatullah Shah Roslan, Nurul Shuhada Abdul Majid, Zafri Azran QC Physics It is essential to monitor patient’s dose to ensure the proper implementation and practices of radiation protection in diagnostic X-ray imaging and to reduce the risks of radiation exposures. Our study aimed to estimate the entrance skin dose and exit dose in abdominal radiography using nanoDot OSLD. Siemens Multix Top X-ray system was used. Kyoto Kagaku PBU-50 phantom (Torso) was scanned. The phantom was placed on the table bucky in antero-posterior supine position. The source-to-image distance was set at 110 cm. A nanoDot OSLD was placed at the surface of abdomen near umbilicus which was exposed to central ray of the X-ray beam to measure the ESD. Exit dose was measured by positioning another nanoDot OSLD exactly opposite (underneath the phantom) to nanoDot OSLD that was used for measurement of ESD. After exposing the phantom with three exposures (70 kVp and 20 mAs, 75 kVp and 25 mAs & 81 kVp and 28 mAs) with table bucky the phantom was exposed without table with the same kVp and mAs. The ESD and ED with table bucky were higher than those without table for each exposure. The measured ESD ranged from 1.38 mGy to 2.44 mGy while exit dose ranged from 0.036 mGy to 0.080 mGy. The ESD and ED with table bucky and without patient table increased as the kVp and mAs increased. The ESD and ED with table bucky was higher than that without patient table for each exposure. Higher ED values with table bucky indicated the contribution of backscattered radiation produced by the patient table. It is concluded that, the OSLD provided the comparable dose results with the published data. The Linear No-Threshold (LNT) model describes that the smallest amount of radiation dose is unsafe for human health and increases the risk of cancer. Thus, patients need to be protected from unnecessary radiation dose contributed by backscattered X-ray photons induced by the patient table. 2019-11 Conference or Workshop Item PeerReviewed application/pdf en http://irep.iium.edu.my/77657/1/ISMP2019_paper_32_Revised_Abstract.pdf application/pdf en http://irep.iium.edu.my/77657/2/ISMP%202019%20_Latest.pdf Sayed, Inayatullah Shah and Roslan, Nurul Shuhada and Abdul Majid, Zafri Azran (2019) Estimation of entrance skin dose (ESD) and exit dose (ED) in abdominal radiography using nanoDot optically stimulated luminescence dosimeter (OSLD). In: 11th International Seminar on Medical Physics, 7 -8 November 2019, Istana Hotel, Kuala Lumpur. (Unpublished)
repository_type	Digital Repository
institution_category	Local University
institution	International Islamic University Malaysia
building	IIUM Repository
collection	Online Access
language	English English
topic	QC Physics
spellingShingle	QC Physics Sayed, Inayatullah Shah Roslan, Nurul Shuhada Abdul Majid, Zafri Azran Estimation of entrance skin dose (ESD) and exit dose (ED) in abdominal radiography using nanoDot optically stimulated luminescence dosimeter (OSLD)
description	It is essential to monitor patient’s dose to ensure the proper implementation and practices of radiation protection in diagnostic X-ray imaging and to reduce the risks of radiation exposures. Our study aimed to estimate the entrance skin dose and exit dose in abdominal radiography using nanoDot OSLD. Siemens Multix Top X-ray system was used. Kyoto Kagaku PBU-50 phantom (Torso) was scanned. The phantom was placed on the table bucky in antero-posterior supine position. The source-to-image distance was set at 110 cm. A nanoDot OSLD was placed at the surface of abdomen near umbilicus which was exposed to central ray of the X-ray beam to measure the ESD. Exit dose was measured by positioning another nanoDot OSLD exactly opposite (underneath the phantom) to nanoDot OSLD that was used for measurement of ESD. After exposing the phantom with three exposures (70 kVp and 20 mAs, 75 kVp and 25 mAs & 81 kVp and 28 mAs) with table bucky the phantom was exposed without table with the same kVp and mAs. The ESD and ED with table bucky were higher than those without table for each exposure. The measured ESD ranged from 1.38 mGy to 2.44 mGy while exit dose ranged from 0.036 mGy to 0.080 mGy. The ESD and ED with table bucky and without patient table increased as the kVp and mAs increased. The ESD and ED with table bucky was higher than that without patient table for each exposure. Higher ED values with table bucky indicated the contribution of backscattered radiation produced by the patient table. It is concluded that, the OSLD provided the comparable dose results with the published data. The Linear No-Threshold (LNT) model describes that the smallest amount of radiation dose is unsafe for human health and increases the risk of cancer. Thus, patients need to be protected from unnecessary radiation dose contributed by backscattered X-ray photons induced by the patient table.
format	Conference or Workshop Item
author	Sayed, Inayatullah Shah Roslan, Nurul Shuhada Abdul Majid, Zafri Azran
author_facet	Sayed, Inayatullah Shah Roslan, Nurul Shuhada Abdul Majid, Zafri Azran
author_sort	Sayed, Inayatullah Shah
title	Estimation of entrance skin dose (ESD) and exit dose (ED) in abdominal radiography using nanoDot optically stimulated luminescence dosimeter (OSLD)
title_short	Estimation of entrance skin dose (ESD) and exit dose (ED) in abdominal radiography using nanoDot optically stimulated luminescence dosimeter (OSLD)
title_full	Estimation of entrance skin dose (ESD) and exit dose (ED) in abdominal radiography using nanoDot optically stimulated luminescence dosimeter (OSLD)
title_fullStr	Estimation of entrance skin dose (ESD) and exit dose (ED) in abdominal radiography using nanoDot optically stimulated luminescence dosimeter (OSLD)
title_full_unstemmed	Estimation of entrance skin dose (ESD) and exit dose (ED) in abdominal radiography using nanoDot optically stimulated luminescence dosimeter (OSLD)
title_sort	estimation of entrance skin dose (esd) and exit dose (ed) in abdominal radiography using nanodot optically stimulated luminescence dosimeter (osld)
publishDate	2019
url	http://irep.iium.edu.my/77657/ http://irep.iium.edu.my/77657/1/ISMP2019_paper_32_Revised_Abstract.pdf http://irep.iium.edu.my/77657/2/ISMP%202019%20_Latest.pdf
first_indexed	2023-09-18T21:49:32Z
last_indexed	2023-09-18T21:49:32Z
_version_	1777413676299452416

Estimation of entrance skin dose (ESD) and exit dose (ED) in abdominal radiography using nanoDot optically stimulated luminescence dosimeter (OSLD)

Similar Items