Cover Image

Real-time germanium-doped optical fibers for clinical computed tomography dosimetry

In studies focusing on the practice of clinical computed tomography (CT) a particular concern has been that of delivering unnecessary dose to patients and with it the added risk for radiation-induced cancers. For a CT system, present work has investigated the dosimetric characteristics of a Ge-doped...

Full description

Saved in:
Bibliographic Details
Main Authors: Sarhan, H.G., Saini, S.M., Bahari, N.M., Bradley, D.A., Zubair, H.T., Basaif, A., Oresegun, A.A., Abdul Rashid, H.A., M. Noor, N.
Format: Article
Language:English
Published: Elsevier BV 2023
Online Access:http://psasir.upm.edu.my/id/eprint/110442/1/110442.pdf
http://psasir.upm.edu.my/id/eprint/110442/
https://www.sciencedirect.com/science/article/abs/pii/S0969806X23002177
Tags: Add Tag
No Tags, Be the first to tag this record!
id my.upm.eprints.110442
record_format eprints
spelling my.upm.eprints.1104422024-10-07T02:54:15Z http://psasir.upm.edu.my/id/eprint/110442/ Real-time germanium-doped optical fibers for clinical computed tomography dosimetry Sarhan, H.G. Saini, S.M. Bahari, N.M. Bradley, D.A. Zubair, H.T. Basaif, A. Oresegun, A.A. Abdul Rashid, H.A. M. Noor, N. In studies focusing on the practice of clinical computed tomography (CT) a particular concern has been that of delivering unnecessary dose to patients and with it the added risk for radiation-induced cancers. For a CT system, present work has investigated the dosimetric characteristics of a Ge-doped optical fiber real-time dosimetry system (model LS-2000, Lumisyns), measuring beam quality, exposure linearity and exposure duration accuracy. For comparison, the study has used a RaySafe X2 test device (Unfors RaySafe) and a Black Piranha (RTI) QA meter. Irradiations were made using a Somatom Definition Flash dual-source 128-slice CT scanner (Siemens Healthcare). The LS-2000, RaySafe X2, and Black Piranha sensors were exposed to beams energized at accelerating potentials ranging from 80 to 140 kVp, with tube current-time products from 50 to 300 mA, and exposure durations from 750 to 2000 ms. Constant signal responses from the LS-2000 have been obtained, measured in respect of beam quality, exposure linearity, and time accuracy. In respect of accuracy of beam quality, the RaySafe X2 and Black Piranha maximum deviations were 1 and 5, respectively; the coefficients of linearity of RaySafe, Black Piranha and LS-2000 are 1, 0.4 and 1.4, respectively; the maximum deviation for the time accuracy test for the three sensors are 0.5, 2 and 1.3, respectively. Evaluation of the LS-2000 real-time dosimetry system with a Ge-doped optical fiber scintillator points to potential for its use in clinical CT dosimetry. Elsevier BV 2023 Article PeerReviewed text en cc_by_4 http://psasir.upm.edu.my/id/eprint/110442/1/110442.pdf Sarhan, H.G. and Saini, S.M. and Bahari, N.M. and Bradley, D.A. and Zubair, H.T. and Basaif, A. and Oresegun, A.A. and Abdul Rashid, H.A. and M. Noor, N. (2023) Real-time germanium-doped optical fibers for clinical computed tomography dosimetry. Radiation Physics and Chemistry, 209 (110972). pp. 1-6. ISSN 0969-806X https://www.sciencedirect.com/science/article/abs/pii/S0969806X23002177 10.1016/j.radphyschem.2023.110972
institution Universiti Putra Malaysia
building UPM Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Putra Malaysia
content_source UPM Institutional Repository
url_provider http://psasir.upm.edu.my/
language English
description In studies focusing on the practice of clinical computed tomography (CT) a particular concern has been that of delivering unnecessary dose to patients and with it the added risk for radiation-induced cancers. For a CT system, present work has investigated the dosimetric characteristics of a Ge-doped optical fiber real-time dosimetry system (model LS-2000, Lumisyns), measuring beam quality, exposure linearity and exposure duration accuracy. For comparison, the study has used a RaySafe X2 test device (Unfors RaySafe) and a Black Piranha (RTI) QA meter. Irradiations were made using a Somatom Definition Flash dual-source 128-slice CT scanner (Siemens Healthcare). The LS-2000, RaySafe X2, and Black Piranha sensors were exposed to beams energized at accelerating potentials ranging from 80 to 140 kVp, with tube current-time products from 50 to 300 mA, and exposure durations from 750 to 2000 ms. Constant signal responses from the LS-2000 have been obtained, measured in respect of beam quality, exposure linearity, and time accuracy. In respect of accuracy of beam quality, the RaySafe X2 and Black Piranha maximum deviations were 1 and 5, respectively; the coefficients of linearity of RaySafe, Black Piranha and LS-2000 are 1, 0.4 and 1.4, respectively; the maximum deviation for the time accuracy test for the three sensors are 0.5, 2 and 1.3, respectively. Evaluation of the LS-2000 real-time dosimetry system with a Ge-doped optical fiber scintillator points to potential for its use in clinical CT dosimetry.
format Article
author Sarhan, H.G.
Saini, S.M.
Bahari, N.M.
Bradley, D.A.
Zubair, H.T.
Basaif, A.
Oresegun, A.A.
Abdul Rashid, H.A.
M. Noor, N.
spellingShingle Sarhan, H.G.
Saini, S.M.
Bahari, N.M.
Bradley, D.A.
Zubair, H.T.
Basaif, A.
Oresegun, A.A.
Abdul Rashid, H.A.
M. Noor, N.
Real-time germanium-doped optical fibers for clinical computed tomography dosimetry
author_facet Sarhan, H.G.
Saini, S.M.
Bahari, N.M.
Bradley, D.A.
Zubair, H.T.
Basaif, A.
Oresegun, A.A.
Abdul Rashid, H.A.
M. Noor, N.
author_sort Sarhan, H.G.
title Real-time germanium-doped optical fibers for clinical computed tomography dosimetry
title_short Real-time germanium-doped optical fibers for clinical computed tomography dosimetry
title_full Real-time germanium-doped optical fibers for clinical computed tomography dosimetry
title_fullStr Real-time germanium-doped optical fibers for clinical computed tomography dosimetry
title_full_unstemmed Real-time germanium-doped optical fibers for clinical computed tomography dosimetry
title_sort real-time germanium-doped optical fibers for clinical computed tomography dosimetry
publisher Elsevier BV
publishDate 2023
url http://psasir.upm.edu.my/id/eprint/110442/1/110442.pdf
http://psasir.upm.edu.my/id/eprint/110442/
https://www.sciencedirect.com/science/article/abs/pii/S0969806X23002177
_version_ 1814054707979616256
score 13.211869

Similar Items