15 May 2014 Terbium-doped gadolinium oxysulfide (Gd2O2S:Tb) scintillation-based polymer optical fibre sensor for real time monitoring of radiation dose in oncology
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Abstract
A PMMA based plastic optical fibre sensor for use in real time radiotherapy dosimetry is presented. The optical fibre tip is coated with a scintillation material, terbium-doped gadolinium oxysulfide (Gd2O2S:Tb), which fluoresces when exposed to ionising radiation (X-Ray). The emitted visible light signal penetrates the sensor optical fibre and propagates along the transmitting fibre at the end of which it is remotely monitored using a fluorescence spectrometer. The results demonstrate good repeatability, with a maximum percentage error of 0.5% and the response is independent of dose rate.
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E. Lewis, E. Lewis, S. O'Keeffe, S. O'Keeffe, M. Grattan, M. Grattan, A. Hounsell, A. Hounsell, D. McCarthy, D. McCarthy, P. Woulfe, P. Woulfe, J. Cronin, J. Cronin, L. Mihai, L. Mihai, D. Sporea, D. Sporea, A. Santhanam, A. Santhanam, N. Agazaryan, N. Agazaryan, } "Terbium-doped gadolinium oxysulfide (Gd2O2S:Tb) scintillation-based polymer optical fibre sensor for real time monitoring of radiation dose in oncology", Proc. SPIE 9141, Optical Sensing and Detection III, 914113 (15 May 2014); doi: 10.1117/12.2058572; https://doi.org/10.1117/12.2058572
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