Characterisation of radioluminesence based optical fibre dosimeter in radiotherapy beam applications

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

doi:10.1117/12.2059389

2 June 2014 Characterisation of radioluminesence based optical fibre dosimeter in radiotherapy beam applications

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

Proceedings Volume 9157, 23rd International Conference on Optical Fibre Sensors; 915799 (2014) https://doi.org/10.1117/12.2059389
Event: OFS2014 23rd International Conference on Optical Fiber Sensors, 2014, Santander, Spain

Abstract

A PMMA (polymethyl methacrylate) based plastic optical fibre is coated with radiation sensitive inorganic scintillators that fluoresce when exposed to ionising radiation. The emitted signal penetrates the fibre and propagates along the fibre where it is remotely monitored using a fluorescence spectrometer. The dosimeter is characterised for a range of parameters associated with radiotherapy treatment plans, including field size and dose rate. The results demonstrate good repeatability, with a maximum percentage error of 0.59% and the response is independent of dose rate.

Citation Download Citation

P. Woulfe, S. O'Keeffe, D. McCarthy, M. Grattan, A. Hounsell, J. Cronin, and E. Lewis "Characterisation of radioluminesence based optical fibre dosimeter in radiotherapy beam applications", Proc. SPIE 9157, 23rd International Conference on Optical Fibre Sensors, 915799 (2 June 2014); https://doi.org/10.1117/12.2059389

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