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KMID : 0357520190420040291
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Journal of Radiological Science and Technology
2019 Volume.42 No. 4 p.291 ~ p.299
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Evaluation of Image Receptor Characteristics in Computed Radiography System Using Exposure Index in International Electrotechnical Commission (Ⅰ)
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Park Hye-Min
Yoon Yong-Su
Roh Young-Hoon
Kim Sung-Jun
Na Chan-Young
Han Tae-Ho
Kim Jung-Su
Jeong Hoi-Woun
Kim Jung-Min
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Abstract
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The International Electrotechnical Commission (IEC) has regulated the definition and requirements of the exposure index (EI). In this study, we calculated the EI of several image receptors in digital radiography system of two different manufacturers according to the method as per IEC, and evaluated the relationship with incident air kerma. To calculate t he E I, w e obtained the characteristics curve of e ach i mage receptor b y increasing t he i ncident air kerma at R QA 3, 5, 7 and 9, respectively. As a result, there was no significant difference in the EI values between different image receptors of the same manufacturer, but EI values of different manufacturer was different despite the same air kerma was incident. Therefore, understanding the characteristics of the digital radiography systems is important in order to use EI as a tool for measuring and managing the radiation dose.
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KEYWORD
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Characteristics Curve, Computed Radiography System, Digital Radiography System, Exposure Index, Image Receptor
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