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http://dx.doi.org/10.14316/pmp.2014.25.1.31

Evaluation of Dosimetric Characteristics of Reproducibility, Linearity and Dose Dependence of Optically Stimulated Luminescence Dosimeters in Co-60 Gamma-rays  

Han, Su Chul (Radiological Cancer Medicine, University of Science and Technology)
Choi, Sang Hyoun (Research Center for Radiotherapy, Korea Institute of Radiological and Medical Sciences)
Park, Seungwoo (Research Center for Radiotherapy, Korea Institute of Radiological and Medical Sciences)
Kim, Chul Hang (Research Center for Radiotherapy, Korea Institute of Radiological and Medical Sciences)
Jung, Haijo (Radiological Cancer Medicine, University of Science and Technology)
Kim, Mi-Sook (Radiological Cancer Medicine, University of Science and Technology)
Yoo, Hyung Jun (Department of Radiation Oncology, Korea Institute of Radiological and Medical Sciences)
Kim, Chan Hyeong (Department of Nuclear Engineering, Hanyang University)
Ji, Young Hoon (Radiological Cancer Medicine, University of Science and Technology)
Yi, Chul Young (Division of Methodology for Quality of Life, Korea Research Institute of Standards and Sciences)
Kim, Kum Bae (Radiological Cancer Medicine, University of Science and Technology)
Publication Information
Progress in Medical Physics / v.25, no.1, 2014 , pp. 31-36 More about this Journal
Abstract
We aimed to evaluate the dosimetric characteristics of reproducibility, linearity and dose dependence of optical stimulated luminance dosimeter (OSLD) in the Co-60 Gamma-rays and to analyze with a precedent study in field of the diagnostic radiography and radiotherapy. The reproducibility was 0.76% of the coefficient of variation, the homogeneity was within 1.5% of the coefficient of variation and OSLD had supra-linear response more than 3 Gy. So the correlation between dose and count was fitted by quadratic function. The count depletion by repeated reading was 0.04% per reading regardless of the irradiated dose. And the half time of decay curve according to the irradiated dose was 0.68 min. with 1 Gy, 1.04 min. with 5 Gy, and 1.10 min. with 10 Gy, respectively. In case of annealing for 30 min, the removal rate was 88% with 1 Gy, 90% with 5 Gy, and 92% with 10 Gy, respectively and 99% in case of annealing time for 4 hour. It is feasible to use OSLDs for dose evaluation in Co-60 Gamma-rays when considering the uncertainty on the procedure according to the irradiated dose.
Keywords
Optical stimulated luminance dosimeters; Dosimetric characteristics; Co-60;
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1 Viamonte A, da Rosa LA, Buckley LA, A Cherpak A, Cygler JE: Radiotherapy dosimetry using a commercial OSL system. Med Phys 35(4):1261-1266 (2008)   DOI   ScienceOn
2 Kim DW, Chung WK, Shin DO, Yoon M: Dose response of commercially available optically stimulated luminescent detector, A2O3:C for megavoltage photons and electrons. Radiat Prot Dosim 149(2):101-108 (2012)   DOI   ScienceOn
3 Landauer Corporation. http://www.landauer.com/Industry/Products/ Dosimeters/nanoDot_OSLD.aspx
4 Aguirre J, Alvarez P, Amador C, Tailor A, Followill D: WE-D-BRB-08: Validation of the commissioning of the optically stimulated luminescence (OSL) system for remote dosimetry audits. Med Phys 37(6):3428 (2010)
5 Yu C, Luxton G: TLD dose measurement: a simplified accurate technique for the dose range from 0.5 cGy to 1000 cGy. Med Phys 26(6):1010-1016 (1999)   DOI   ScienceOn
6 Jursinic PA: Characterization of optically stimulated luminescent dosimeters, OSLDs for clinical dosimetric measurements. Med Phys 34(12):4594-4604 (2007)   DOI   ScienceOn
7 Al-Senan RM, Hatab MR: Characteristics of an OSLD in the diagnostics energy range. Med Phys 38(7):4396-4405 (2011)   DOI   ScienceOn
8 Han S, Kim K, Park S, Lee S, Yi C, Kim H, Jung H, Kim M, Ji Y: SU-E-T-31: The evaluation of Dosimetric characteristics of OSLDs based on output correction factor in low energy. Med Phys 40(6):210 (2013)
9 Kerns JR, Kry SF, Sahoo N: Characteristics of optically stimulated luminescence dosimeters in the spread-out Bragg peak region of clinical proton beam. Med Phys 39(4):1854-1863(2012)   DOI   ScienceOn
10 Jursinic PA: changes in optically stimulated luminescent dosimeter (OSLD) dosimetric characteristics with accumulated dose. Med Phys 37(1):132-140 (2010)   DOI   ScienceOn
11 Omotayo AA, Cygler JE, Sawakuchi GO: The effect for different bleaching wavelengths on the sensitivity of Al2O3:C optically stimulated luminescence detectors (OSLDs) exposed to 6MV photon beams. Med Phys 39(9):5457-5468 (2012)   DOI   ScienceOn
12 Yahnke CJ: Calibrating the microStar (2009)
13 Reft CS: The energy dependence and dose response of a commercial optically stimulated luminescent detector for kilovoltage photon, megavoltage photon, and electron, proton, and carbon beams. Med Phys 36(5):1690-169 (2009)   DOI   ScienceOn