Plastic optical fibre sensor for in-vivo radiation monitoring during brachytherapy

P. Woulfe; F. J. Sullivan; E. Lewis; S. O'Keeffe

doi:10.1117/12.2195213

28 September 2015 Plastic optical fibre sensor for in-vivo radiation monitoring during brachytherapy

P. Woulfe, F. J. Sullivan, E. Lewis, S. O'Keeffe

Proceedings Volume 9634, 24th International Conference on Optical Fibre Sensors; 96342I (2015) https://doi.org/10.1117/12.2195213
Event: International Conference on Optical Fibre Sensors (OFS24), 2015, Curitiba, Brazil

Abstract

An optical fibre sensor is presented for applications in real-time in-vivo monitoring of the radiation dose a cancer patient receives during seed implantation in Brachytherapy. The sensor is based on radioluminescence whereby radiation sensitive scintillation material is embedded in the core of a 1mm plastic optical fibre. Three scintillation materials are investigated: thallium-doped caesium iodide (CsI:Tl), terbium-doped gadolinium oxysulphide (Gd₂O₂S:Tb) and europium-doped lanthanum oxysulphide (La₂O₂S:Eu). Terbium-doped gadolinium oxysulphide was identified as being the most suitable scintillator and further testing demonstrates its measureable response to different activities of Iodine-125, the radio-active source commonly used in Brachytherapy for treating prostate cancer.

Citation Download Citation

P. Woulfe, F. J. Sullivan, E. Lewis, and S. O'Keeffe "Plastic optical fibre sensor for in-vivo radiation monitoring during brachytherapy", Proc. SPIE 9634, 24th International Conference on Optical Fibre Sensors, 96342I (28 September 2015); https://doi.org/10.1117/12.2195213

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