Temperature variations as a source of uncertainty in medical fiber-coupled organic plastic scintillator dosimetry

Siritorn Buranurak, Claus Erik Andersen, Anders Ravnsborg Beierholm, Lars René Lindvold

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    Abstract

    Fiber-coupled organic plastic scintillators have potential applications in medical dosimetry related to, for example, brachytherapy and external beam radiotherapy with MV photons. As medical dosimetry generally strives for high accuracy, we designed a study to assess if the light yield from commonly used scintillating fibers would change with temperature in the clinical range (15–40 °C). The study showed that the light yield in the peak regions of the scintillators studied decreases linearly with increasing temperature. For the blue BCF-12 and the green BCF-60 from Saint-Gobain, France we found temperature coefficients of −0.15 ± 0.01%/K and −0.55 ± 0.04%/K, respectively. These values are sufficiently large to warrant careful consideration for clinical measurements. © 2013 Elsevier Ltd. All rights reserved.
    Original languageEnglish
    JournalRadiation Measurements
    Volume56
    Pages (from-to)307-311
    ISSN1350-4487
    DOIs
    Publication statusPublished - 2013
    Event8th International Conference on Luminescent Detectors and Transformers of Ionizing Radiation - Halle, Germany
    Duration: 10 Sep 201314 Sep 2013
    Conference number: 8
    http://www.contoo.de/c/lumdetr2012/

    Conference

    Conference8th International Conference on Luminescent Detectors and Transformers of Ionizing Radiation
    Number8
    CountryGermany
    CityHalle
    Period10/09/201314/09/2013
    Internet address

    Keywords

    • Dosimetry
    • Scintillator
    • Optical fiber
    • Uncertainty

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