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Proceedings Paper

Terbium-doped gadolinium oxysulfide (Gd2O2S:Tb) scintillation-based polymer optical fibre sensor for real time monitoring of radiation dose in oncology
Author(s): E. Lewis; S. O'Keeffe; M. Grattan; A. Hounsell; D. McCarthy; P. Woulfe; J. Cronin; L. Mihai; D. Sporea; A. Santhanam; N. Agazaryan
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Paper 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.

Paper Details

Date Published: 15 May 2014
PDF: 7 pages
Proc. SPIE 9141, Optical Sensing and Detection III, 914113 (15 May 2014); doi: 10.1117/12.2058572
Show Author Affiliations
E. Lewis, Univ. of Limerick (Ireland)
S. O'Keeffe, Univ. of Limerick (Ireland)
M. Grattan, Belfast City Hospital (Ireland)
A. Hounsell, Belfast City Hospital (Ireland)
D. McCarthy, Univ. of Limerick (Ireland)
P. Woulfe, Galway Clinic (Ireland)
J. Cronin, Galway Clinic (Ireland)
L. Mihai, National Institute for Lasers, Plasma and Radiation Physics (Romania)
D. Sporea, National Institute for Lasers, Plasma and Radiation Physics (Romania)
A. Santhanam, Univ. of California, Los Angeles (United States)
N. Agazaryan, Univ. of California, Los Angeles (United States)

Published in SPIE Proceedings Vol. 9141:
Optical Sensing and Detection III
Francis Berghmans; Anna G. Mignani; Piet De Moor, Editor(s)

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