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KMID : 0357520090320010053
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Journal of Radiological Science and Technology
2009 Volume.32 No. 1 p.53 ~ p.60
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The Study on the Attenuation of X-ray and Imaging Quality by Contents in Stomach
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Dong Kyung-Rae
Ji Youn-Sang
Kim Chang-Bok
Moon Sang-In
Dieter Kevin
Choi Sung-Kwan
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Abstract
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This study examined the change in the attenuation of X-rays with the ROI (Region of Interest) in DR (Digital Radiography) according to the stomach contents by manufacturing a tissue equivalent material phantom to simulate real stomach tissue based on the assumption that there is some attenuation of X-rays and a difference in imaging quality according to the stomach contents. The transit dosage by the attenuation of X-rays decreased with increasing protein thickness, which altered the average ROI values in the film and DR images. A comparison of the change in average ROI values of the film and DR image showed that the image in film caused larger density changes with varying thickness of protein than the image by DR. The results indicate that NPO (nothing by mouth) is more important in film system than in DR system.
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