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http://dx.doi.org/10.7742/jksr.2017.11.6.459

Comparison of Dose and Quality of Copper and Nickel Additional Filter Plate in Diagnostic X-ray Generator  

Lee, Hyun-Kyung (Department of Radiological Science, Eulji University)
Go, Yu-Rim (Department of Radiological Science, Eulji University)
Park, Young-Kyeong (Department of Radiological Science, Eulji University)
Han, Dong-Kyoon (Department of Radiological Science, Eulji University)
Publication Information
Journal of the Korean Society of Radiology / v.11, no.6, 2017 , pp. 459-466 More about this Journal
Abstract
The purpose of this study was to evaluate the difference of dose and image quality according to the material of the additional filter plate by selecting copper and nickel. First, the absorbed dose was measured using a Rando phantom setting the additional filter plates of copper and nickel None, 0.1 mm, 0.2 mm, and 0.3 mm under 120 kVp, and 6.3 mAs. Second, We acquired image according to filter thickness of copper and nickel. by changing the tube voltage of 90 kVp, 100 kVp, 110 kVp, 120 kVp and exposure indexes of 400, 800 and 1600. Third, we obtained the SNR and CNR values using the Image J program and evaluated quantitatively and then evaluated image quality. As a result, Absorbed dose measurements showed that nickel was higher than copper, and the absorbed dose decreased as the thickness increased(p<0.05). Furthermore, Quantitative analysis of images showed no significant difference between the two images according to change the voltage and the exposure index(p>0.05). In conclusion, this study confirms that the nickel addition plate can maintain the current image quality while reducing the exposure dose compared to copper.
Keywords
Nickel; Copper; AEC; EI; Radiation dose; Image quality;
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