Radiotherapy dosimetry based on plastic optical fibre sensors

S. O'Keeffe; M. Grattan; A. Hounsell; D. McCarthy; P. Woulfe; J. Cronin; E. Lewis

doi:10.1117/12.2025864

20 May 2013 Radiotherapy dosimetry based on plastic optical fibre sensors

S. O'Keeffe, M. Grattan, A. Hounsell, D. McCarthy, P. Woulfe, J. Cronin, E. Lewis

Proceedings Volume 8794, Fifth European Workshop on Optical Fibre Sensors; 879418 (2013) https://doi.org/10.1117/12.2025864
Event: Fifth European Workshop on Optical Fibre Sensors, 2013, Krakow, Poland

Abstract

The use of a PMMA based plastic optical fibre in radiotherapy dosimetry is presented. The optical fibre tip is coated with a scintillation material, terbium-doped gadolinium oxysulfide (Gd2O2S:Tb), which fluoresces under ionising radiation. The emitted signal penetrates the fibre and propagates along the fibre where it is remotely monitored using a fluorescence spectrometer. The results demonstrate good repeatability, with a maximum percentage error of 0.59% and the response is independent of dose rate.

Citation Download Citation

S. O'Keeffe, M. Grattan, A. Hounsell, D. McCarthy, P. Woulfe, J. Cronin, and E. Lewis "Radiotherapy dosimetry based on plastic optical fibre sensors", Proc. SPIE 8794, Fifth European Workshop on Optical Fibre Sensors, 879418 (20 May 2013); https://doi.org/10.1117/12.2025864

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