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http://dx.doi.org/10.7742/jksr.2019.13.1.141

Evaluation of Angle Dependence on Positional Radioisotope Source Detector using Monte Carlo Simulation in NDT  

Han, Moojae (Department of Radiation Oncology, Collage of Medicine, Inje University)
Heo, Seunguk (Research for Convergence of Biomedical Science and Technology, Pusan National University Yangsan Hospital)
Shin, Yohan (Department of Radiation Oncology, Collage of Medicine, Inje University)
Jung, Jaehoon (Research for Convergence of Biomedical Science and Technology, Pusan National University Yangsan Hospital)
Kim, Kyotae (Korea Institute of Radiological and Medical Sciences)
Heo, Yeji (Department of Medical Imaging Research Institute, Inje university)
Lee, Deukhee (Department of Radiation Oncology, Busan Paik Hospital, Inje University)
Cho, Heunglae (Department of Radiation Oncology, Busan Paik Hospital, Inje University)
Park, Sungkwang (Department of Medical Imaging Research Institute, Inje university)
Publication Information
Journal of the Korean Society of Radiology / v.13, no.1, 2019 , pp. 141-146 More about this Journal
Abstract
Radiation sources used in the field of industrial non-destructive pose a risk of exposure due to ageing equipment and operator carelessness. Thus, the need for a safety management system to trace the location of the source is being added. In this study, Monte Carlo Simulation was performed to analyse the angle dependence of the unit-cell comprising the line-array dosimeter for tracking the location of radiation sources. As a result, the margin of error for the top 10% of each slope was 5.90% at $0^{\circ}$, 8.08% at $30^{\circ}$, and 20.90% at $60^{\circ}$. The ratio of the total absorbed dose was 83.77% at $30^{\circ}$ and 53.36% at $60^{\circ}$ based on $0^{\circ}$(100%) and showed a tendency to decrease with increasing slope. For all gradients, the maximum number was shown at $30^{\circ}$ No. 9 pixels, and for No. 10, there was a tendency to drop 7.24 percent. This study has shown a large amount of angle dependence, and it is estimated that the proper distance between the source and line-array dosimeters should be maintained at a distance of not less than 1 cm to reduce them.
Keywords
positional source detector; angle dependence; Monte Carlo Simulation; FLUKA;
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Times Cited By KSCI : 1  (Citation Analysis)
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1 P. Guide, Manual on gamma radiography, International Atomic Energy Agency PRSM 1, Austria, pp. 1-57, 1996.
2 E. Massoud, "Dose assessment for some industrial gamma sources with an application to a radiation accident, Open Journal of Modelling and Simulation," Vol. 2, No. 1, pp. 4-11, 2014.   DOI
3 G. T. Joo, J. S. Shin, D. E. Kim, J. H. Song, S. H. Choo, H. K. Chang, "Development of automatic remote exposure controller for gamma radiography," Journal of Korean Society for Nondestructive Testing, Vol. 22, No. 5, pp. 490-499, 2002.
4 K. J. Lee, J. I. Yun, B. G. Park, S. Kim, B. S. Lee, "Evaluation of luminance performance of scintillating film for monitoring the position of a radioactive source in an NDT apparatus," Journal of Radiological Science Technology, Vol. 28, No. 1, pp. 13-17, 2005.
5 K. T. Kim, J. H. Kim, M. J. Han, Y. J. Heo, S. K. Park, Characterization of a new dosimeter for the development of a position-sensitive detector of radioactive sources in industrial NDT equipment, Journal of Instrumentation, Vol. 13, No. 2, C02003, 2018. DOI:10.1088/1748-0221/13/02/C02003   DOI
6 Y. J. Heo, K. T. Kim, M. J. Han, C. W. Moon, J. E. Kim, J. K. Park, S. K. Park, "Development of a stable and sensitive semiconductor detector by using a mixture of lead(II) iodide and lead monoxide for NDT radiation dose detection," Journal of Instrumentation, Vol. 13, No. 3, C03023, 2018. DOI:10.1088/1748-0221/13/03/C03023   DOI
7 D. Terribilini, P. Manser, D. Frei, W. Volken, R. Mini, M. K. Fix, "Implementation of a brachytherapy Ir-source in an in-house system and comparison of simulation results with EGSnrc, VMC++ and PIN," Journal of Physics: Conference Series, Vol. 74, No. 1, pp. 12-22, 2007.
8 G. Hajdok, J. J. Battista, I. A. Cunningham, "Fundamental X-ray interaction limits in diagnostic imaging detectors: Spatial resolution," Medical Physics, Vol. 35, No. 7, pp. 3180-3193, 2008.   DOI
9 K. M. Oh, J. S. Kim, J. W. Shin, S. U. Heo, G. S. Cho, D. K. Kim, J. G. Park, S. H. Nam, "Improvement in pixel signal uniformity of polycrystalline mercuric iodide films for digital X-ray imaging," Japanese Journal of Applied Physics, Vol 53, No. 3, 031201, 2014. DOI:10.7567/JJAP.53.031201   DOI
10 http://www.fluka.org/
11 R. Herrera, MCNP5 Monte Carlo based Dosimetry for the Nucletron Iridium-192 High Dose-rate Brachytherapy Source with Tissue Heterogeneity Corrections, Florida, pp. 1-76, 2012.
12 M. Sawicki, Treatment Planning in Brachytherapy HDR Based on Three-Dimensional Image, Book Citation Index, London, pp. 28-61, 2017.