Performance of a Ge-doped optical fibre dosimeter for CT real-time measurements
This study investigates the dosimetric characteristics of a real-time radioluminescence (RL) Ge-doped optical fiber sensor, model LS-1000, providing measurement of absorbed dose in terms of counts in use of a computed tomography (CT) system. A CT dose index head phantom has been used as the refere...
| Main Authors: | , , , , , , , , |
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| Format: | Article |
| Published: |
Elsevier
2023
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| Online Access: | http://psasir.upm.edu.my/id/eprint/109224/ |
| _version_ | 1848865314969747456 |
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| author | Sarhan, H. G. M. Saini, S. M. Bahari, N. Bradley, D. A. Zubair, H. T. Basaif, A. Oresegun, A. A. Abdul Rashid, H. A. M. Noor, N. |
| author_facet | Sarhan, H. G. M. Saini, S. M. Bahari, N. Bradley, D. A. Zubair, H. T. Basaif, A. Oresegun, A. A. Abdul Rashid, H. A. M. Noor, N. |
| author_sort | Sarhan, H. G. |
| building | UPM Institutional Repository |
| collection | Online Access |
| description | This study investigates the dosimetric characteristics of a real-time radioluminescence (RL) Ge-doped optical
fiber sensor, model LS-1000, providing measurement of absorbed dose in terms of counts in use of a computed
tomography (CT) system. A CT dose index head phantom has been used as the reference tool. The response of the
LS-1000 sensor has been compared against that of two other forms of dosimeter - a RaySafe X2 CT sensor (an
ionization chamber system) and a Black Piranha CT dose profiler (a point dose solid-state detector). The three
dosimeters have been irradiated in each of five available holes within the CT dose index head phantom. The
results show RL response at the position of the peripheral holes of around 250 counts/gate for a gate time of 10
ms, while at the position of the central hole the response was 80 counts/gate. The maximum dose rate for the
RaySafe X2 CT sensor has been found to be 5 mGy/s while that observed for the CT dose profiler was 6 mGy/s. In
respect of CT applications, this trial of the luminescence device demonstrates that the germanium-doped optical
fiber device may offer a promising alternative to conventional dosimeters, also allowing measurements at high
accuracy and precision. |
| first_indexed | 2025-11-15T14:02:45Z |
| format | Article |
| id | upm-109224 |
| institution | Universiti Putra Malaysia |
| institution_category | Local University |
| last_indexed | 2025-11-15T14:02:45Z |
| publishDate | 2023 |
| publisher | Elsevier |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | upm-1092242024-08-27T04:18:37Z http://psasir.upm.edu.my/id/eprint/109224/ Performance of a Ge-doped optical fibre dosimeter for CT real-time measurements Sarhan, H. G. M. Saini, S. M. Bahari, N. Bradley, D. A. Zubair, H. T. Basaif, A. Oresegun, A. A. Abdul Rashid, H. A. M. Noor, N. This study investigates the dosimetric characteristics of a real-time radioluminescence (RL) Ge-doped optical fiber sensor, model LS-1000, providing measurement of absorbed dose in terms of counts in use of a computed tomography (CT) system. A CT dose index head phantom has been used as the reference tool. The response of the LS-1000 sensor has been compared against that of two other forms of dosimeter - a RaySafe X2 CT sensor (an ionization chamber system) and a Black Piranha CT dose profiler (a point dose solid-state detector). The three dosimeters have been irradiated in each of five available holes within the CT dose index head phantom. The results show RL response at the position of the peripheral holes of around 250 counts/gate for a gate time of 10 ms, while at the position of the central hole the response was 80 counts/gate. The maximum dose rate for the RaySafe X2 CT sensor has been found to be 5 mGy/s while that observed for the CT dose profiler was 6 mGy/s. In respect of CT applications, this trial of the luminescence device demonstrates that the germanium-doped optical fiber device may offer a promising alternative to conventional dosimeters, also allowing measurements at high accuracy and precision. Elsevier 2023-11 Article PeerReviewed Sarhan, H. G. and M. Saini, S. and M. Bahari, N. 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) Performance of a Ge-doped optical fibre dosimeter for CT real-time measurements. Radiation Physics and Chemistry, 212. art. no. 111149. pp. 1-8. ISSN 0969-806X; ESSN: 1879-0895 https://linkinghub.elsevier.com/retrieve/pii/S0969806X23003948 10.1016/j.radphyschem.2023.111149 |
| spellingShingle | Sarhan, H. G. M. Saini, S. M. Bahari, N. Bradley, D. A. Zubair, H. T. Basaif, A. Oresegun, A. A. Abdul Rashid, H. A. M. Noor, N. Performance of a Ge-doped optical fibre dosimeter for CT real-time measurements |
| title | Performance of a Ge-doped optical fibre dosimeter for CT real-time measurements |
| title_full | Performance of a Ge-doped optical fibre dosimeter for CT real-time measurements |
| title_fullStr | Performance of a Ge-doped optical fibre dosimeter for CT real-time measurements |
| title_full_unstemmed | Performance of a Ge-doped optical fibre dosimeter for CT real-time measurements |
| title_short | Performance of a Ge-doped optical fibre dosimeter for CT real-time measurements |
| title_sort | performance of a ge-doped optical fibre dosimeter for ct real-time measurements |
| url | http://psasir.upm.edu.my/id/eprint/109224/ http://psasir.upm.edu.my/id/eprint/109224/ http://psasir.upm.edu.my/id/eprint/109224/ |