A computerized glow curve analysis (GCA) method for WinREMS thermoluminescent dosimeter data using MATLAB

Harvey, J.; Rodrigues, Miesher; Kearfott, Kimberlee J.

doi:10.1016/j.apradiso.2011.04.026

Cited by 22 publications

(13 citation statements)

References 19 publications

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“…To see if dose response linearity failed at doses lower than the manufacturer's stated minimum detectable dose, the process was then repeated for incrementally lower doses of 4.4 and 2.2 mGy; and 880, 660, 440, 220, 180, 130, 90, 40, and 8.8 lGy, in keeping with previous experiments (e.g. [20]). Higher doses were not tested as the TLD materials used were previously shown to exhibit dose-response linearity to at least 1 Gy [11].…”

Section: Dose-response Linearity Experimentsmentioning

confidence: 99%

“…Fading effects were compensated for using the results of a previous experiment [11]. The glow curve data were obtained using the packaged TLD reader software (WinREMS version PL-26732.8.0.0.0, BICRON/Harshaw, 6801 Cochran Road, Solon, OH 44139, USA) and the glow curve separated into individual glow peaks using a computerized glow curve analysis (GCA) program [20] for a numerical computing package (MATLAB R2010b, The MathWorks Inc., 3 Apple Hill Drive, Natick, MA 01760).…”

Section: Dose-response Linearity Experimentsmentioning

confidence: 99%

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Dose response linearity and practical factors influencing minimum detectable dose for various thermoluminescent detector types

Harvey

Kearfott

Rafique

2014

J Radioanal Nucl Chem

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The minimum detectable dose (MDD) limit was examined in four different ways for groups of LiF:Mg,Ti thermoluminescent dosimeters, and two ways for CaF 2 :Dy, CaF 2 :Tm, CaF 2 :Mn, and CaSO 4 :Dy dosimeters. All types were irradiated and read out at dose intervals from 8.8 lGy to 6.6 mGy. Dose response linearity was never lost even for the lowest dose tested. As an ideal MDD, the signal arising from a zero applied dose readout was compared to calibration from true doses, resulting in signal corresponding to 0.04-0.1 lGy. The effects of fading and high ambient radon exposure on the MDD were examined.

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Section: Dose-response Linearity Experimentsmentioning

confidence: 99%

Section: Dose-response Linearity Experimentsmentioning

confidence: 99%

Dose response linearity and practical factors influencing minimum detectable dose for various thermoluminescent detector types

Harvey

Kearfott

Rafique

2014

J Radioanal Nucl Chem

Self Cite

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“…É esta luz emitida que será medida e correlacionada com a dose de radiação recebida pelo material. [12] O material TL mais utilizado em radiodiagnóstico e radioterapia é o fluoreto de lítio dopado com magnésio e titânio (LiF:Mg,Ti). [13], [14] Este material pode ser produzido de diversas formas, tais como pó, bastões ou discos com dimensões pequenas (da ordem de alguns milímetros …”

Section: Dosimetria Termoluminescenteunclassified

“…O método consiste na deconvolução da curva de emissão resultante da leitura de cada dosímetro, a fim de transformar esta curva em vários picos de emissão, utilizando a cinética de primeira ordem [12].…”

Section: Cgcaunclassified

“…Princípios gerais para a utilização de dosímetros TL deverão ser seguidos [33], bem como a implementação da CGCA será baseada no trabalho de HARVEY, et al [12]. O programa ajusta os dados das curvas de emissão a uma soma de funções similares à equação 10, com diferentes termos E, T, Tm e Im, para cada pico, utilizando um método de mínimos quadrados, para funções não lineares nos parâmetros e o algoritmo de Levenberg-Marquardt para minimização [29], [34], [35].…”

Section: Sistema Dosimétricounclassified

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Implementação de uma análise computadorizada da curva de emissão termoluminescente e aplicação em dosimetria clínica

Ferreira¹

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Analysis of thermoluminescence characteristics of a lithium disilicate glass ceramic using a nonlinear autoregressive with exogenous input model

2020

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Dental ceramics because of their translucency exemplify the most biologically realistic restorative materials for aesthetic rehabilitation and can be used to estimate dose accumulated as a result of a nuclear accident or attack. In this study, lithium disilicate ceramic obtained from Vivadent Ivoclar, Turkey was studied for its thermoluminescence (TL) properties. The lithium disilicate glass ceramic was irradiated with a 90Sr–90Y β‐source from 10 Gy to 6.9 kGy and the results read on a Harshaw 3500 reader. The TL peak of lithium disilicate ceramic showed sublinearity in the range 12 Gy to 6 kGy. The area under the TL glow curve increased by about 25% by the end of 10th measurement cycle. Fading values were also considered after irradiation. Lithium disilicate ceramic samples underwent 37% fading after 1 h and 59% fading after 1 week. In addition to the experimental study, a software‐based simulation study was also undertaken using a MATLAB system identification tool. Experimental studies are generally time consuming and some materials used for experiments are very expensive. In this study, experimental, and simulation results were compared and produced almost the same outcome with a similarity of more than 98%.

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A computerized glow curve analysis (GCA) method for WinREMS thermoluminescent dosimeter data using MATLAB

Cited by 22 publications

References 19 publications

Dose response linearity and practical factors influencing minimum detectable dose for various thermoluminescent detector types

Dose response linearity and practical factors influencing minimum detectable dose for various thermoluminescent detector types

Implementação de uma análise computadorizada da curva de emissão termoluminescente e aplicação em dosimetria clínica

Analysis of thermoluminescence characteristics of a lithium disilicate glass ceramic using a nonlinear autoregressive with exogenous input model

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