Terbium-doped gadolinium oxysulfide (Gd2O2S:Tb) scintillation-based polymer optical fibre sensor for real time monitoring of radiation dose in oncology

E. Lewis, S. O'Keeffe, M. Grattan, A. Hounsell, D. McCarthy, P. Woulfe, J. Cronin, L. Mihai, D. Sporea, A. Santhanam, N. Agazaryan

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Citation (Scopus)

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.

Original languageEnglish
Title of host publicationOptical Sensing and Detection III
PublisherSPIE
Volume9141
ISBN (Print)9781628410891
DOIs
Publication statusPublished - 01 Jan 2014
Externally publishedYes
EventOptical Sensing and Detection III - Brussels, Belgium
Duration: 14 Apr 201417 Apr 2014

Conference

ConferenceOptical Sensing and Detection III
CountryBelgium
CityBrussels
Period14/04/201417/04/2014

Keywords

  • brachytherapy
  • fluorescence
  • Optical fibre dosimeter
  • optical fibre sensor
  • Plastic optical fibres
  • radiotherapy
  • real time radiation measurement

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering

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    Lewis, E., O'Keeffe, S., Grattan, M., Hounsell, A., McCarthy, D., Woulfe, P., Cronin, J., Mihai, L., Sporea, D., Santhanam, A., & Agazaryan, N. (2014). Terbium-doped gadolinium oxysulfide (Gd2O2S:Tb) scintillation-based polymer optical fibre sensor for real time monitoring of radiation dose in oncology. In Optical Sensing and Detection III (Vol. 9141). [914113] SPIE. https://doi.org/10.1117/12.2058572