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KMID : 1151820170110070611
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Journal of the Korean Society of Radiology
2017 Volume.11 No. 7 p.611 ~ p.617
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Fabrication of Bendable Gd2O2S:Tb Intensifying Screen and Evaluation of Fatigue Properties
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Park Ji-Koon
Yang Seung-Woo
Jun Jae-Hoon
Kim Joo-Hee
Heo Ye-Ji
Kang Sang-Sik
Kim Kyo-Tae
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Abstract
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In this study, it was expected that long-term stability against external mechanical external force could be secured if the phosphor layer had ductility. In this study, a bendable Gd2O2S:Tb s ensitized paper was fabricated by screen printing method and the image uniformity was evaluated through RMS analysis and histogram analysis to investigate the effect of fatigue accumulation due to long-term external force and repetitive external force. As a result, the dominant pixel area is maintained constant and the relative standard deviation is less than 10% for the long-term external force. However, for the repetitive external force, the dominant pixel area is divided into three areas and the image uniformity is adversely affected. Based on these results, it is suggested that the curved surface detector can be applied by securing the mechanical stability against the existing radiation sensitized paper. However, further studies are needed to apply it to the flexible detector. As a result, flexible radiation sensitizers can be applied to various curved surfaces, and it is expected to be applicable to various fields such as nuclear medicine, medical treatment, and industrial fields in the future.
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KEYWORD
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Radiation intensifying screen, CMOS X-ray detector, Image uniformity, Root mean square, Histogram
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