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KMID : 1151820200140020139
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Journal of the Korean Society of Radiology
2020 Volume.14 No. 2 p.139 ~ p.148
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Evaluation of Clinical Application Model of Optimized Parameter through Analysis of Stability of Radiation Output and Image Quality when Exposure Time Change of Digital Radiography (DR)
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Hwang Jun-Ho
Choi Ji-An
Kim Hyun-Soo
Lee Kyung-Bae
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Abstract
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The purpose of this study is to propose a method to optimize the performance of Digital Radiography (DR) by analyzing the effect of exposure time change on the stability of radiation output and image quality. The experimental method was used to change the exposure time to 50 msec, 100 msec, 200 msec, and 400 msec so that the Percentage Average Error (PAE), Time-to-Radiation Dose Curve, Signal to Noise Ratio (SNR), Contrast to Noise Ratio (CNR) and theses analysis were performed to evaluate the normal operation of parameters, radiation output and image quality. As a result, all the parameters used in the experiment showed the Percentage Average Error in the normal range, and the shorter the exposure time, the stability of radiation output and image quality decrease. In conclusion, it was found that the performance of Digital Radiography can be optimized when stable radiation output and image quality are applied by applying 100 msec ~ 200 msec exposure time.
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KEYWORD
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Digital Radiography (DR) , Exposure Time , Radiation Output , Image Quality , Parameter
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