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http://dx.doi.org/10.17946/JRST.2017.40.3.02

Investigation of Physical Imaging Properties in Various Digital Radiography Systems  

Jeong, Hoi-Woun (Department of Radiological Science, Baekseok Culture University)
Min, Jung-Hwan (Department of Radiological technology, Shingu University)
Yoon, Yong-Su (Department of Health Sciences, Graduate School of Medical Sciences, Kyushu University)
Kim, Jung-Min (Department of Health and Environmental Science, College of Health Science, Korea University)
Publication Information
Journal of radiological science and technology / v.40, no.3, 2017 , pp. 363-370 More about this Journal
Abstract
We aimed to evaluate the physical imaging properties in various digital radiography systems with charged coupled device (CCD), computed radiography (CR), and indirect flat panel detector (FPD). The imaging properties measured in this study were modulation transfer function (MTF) wiener spectrum (WS), and detective quantum efficiency (DQE) to compare the performance of each digital radiography system. The system response of CCD were in a linear relationship with exposure and that of CR and FPD were proportional to the logarithm of exposure. The MTF of both CR and FPD indicated a similar tendency but in case of CCD, it showed lower MTF than that of CR and FPD. FPD showed the lowest WS and also indicated the highest DQE among three systems. According to the results, digital radiography system with different type of image receptor had its own image characteristics. Therefore, it is important to know the physical imaging characteristics of the digital radiography system accurately　to obtain proper image quality.
Keywords
Digital Radiography; Modulation Transfer Function; Wiener Spectrum; Detective Quantum Efficiency;
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Times Cited By KSCI : 7  (Citation Analysis)
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