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Author  |
Boughaba, N.E.; Bouzid, B.; Yahlali, N. |
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Title |
Optical performance studies of an all-polymer air-core scintillation dosemeter for brachytherapy |
Type |
Journal Article |
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Year |
2026 |
Publication |
Radiation Protection Dosimetry |
Abbreviated Journal |
Radiat. Prot. Dosim. |
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Volume |
202 |
Issue |
2 |
Pages |
97-101 |
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Abstract |
Plastic scintillation dosemeters have gained significant interest for invivo dosimetry in high-dose rate brachytherapy (BT) due to their favourable dosimetric properties. However, their clinical utility is limited by Cerenkov radiation, which can contribute over 50% of the signal, depending on the source position. The current dosemeter based on silica air-core (AC) light-guide was proven to be highly accurate; however, its high light loss and its mechanical rigidity limit its use for invivo BT dosimetry with flexible applicators. In the present work, a novel flexible all-polymer dosemeter with silver-coated polytetrafluoroethylene (Ag-PTFE) light-guide was built and compared to a solid-core light-guide dosemeter (standard dosemeter), using Geant4 Application for Tomographic Emission simulations. A reduction of the Cerenkov noise in the signal of this AC dosemeter was found below 0.3%, independently of the source position. On the other hand, the light collection efficiency was found to be ~40% smaller than in the standard dosemeter. We show how it is possible to further reduce this difference to ~20% and discuss the optimal design of this all-polymer Cerenkov-free dosemeter. |
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Address |
[Boughaba, Nor El Houda; Bouzid, Boualem] Univ Sci & Technol Houari Boumediene, SNIRM Lab, BP 32 El Alia, Algiers, Algeria, Email: nboughaba@usthb.dz |
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Publisher |
Oxford Univ Press |
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Language |
English |
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ISSN |
0144-8420 |
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Notes |
WOS:001692279500009 |
Approved |
no |
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Is ISI |
yes |
International Collaboration |
yes |
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Call Number |
IFIC @ pastor @ |
Serial |
7090 |
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