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KMID : 0357520110340010009
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Journal of Radiological Science and Technology
2011 Volume.34 No. 1 p.9 ~ p.15
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Image Quality Evaluation of Digital X-ray Image and Film Image using Contrast Method
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Park Ji-Koon
Joeng Bong-Jae
Choi Jang-Yong
Kang Sang-Sik
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Abstract
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In this paper, an image quality evaluation of amorphous selenium based x-ray system was performed using modulation transfer function (MTF) measurement. MTF as a main factor of imaging quality evaluation was investigated by contrast method from acquired test pattern image. The MTF value was measured to 36.1% at 3.0 lp/mm which is twice as high as that in the film image. Compared with other studies, the results demonstrate that amorphous selenium based x-ray detector is clinically meaningful.
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KEYWORD
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Digital Radiography Detector, Amorphous Selenium, Modulation Transfer Function, Image quality, Contrast method
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