한국의학물리학회:학술대회논문집 (Proceedings of the Korean Society of Medical Physics Conference)

한국의학물리학회 (Korean Society of Medical Physics)
권호 표지

DR Responses to X-Ray: in Terms of Absorbed Energy

  • Kim, Do-Il (Dept. of Biomedical Engineering, College of Medicine, Catholic University of Korea) ;
  • Lee, Hyoung-Koo (Dept. of Biomedical Engineering, College of Medicine, Catholic University of Korea) ;
  • Kim, Sung-Hyeon (Dept. of Biomedical Engineering, College of Medicine, Catholic University of Korea) ;
  • Ho, Dong-Su (Dept. of Biomedical Engineering, College of Medicine, Catholic University of Korea) ;
  • Suh, Tae-Suk (Dept. of Biomedical Engineering, College of Medicine, Catholic University of Korea) ;
  • Choe, Bo-Young (Dept. of Biomedical Engineering, College of Medicine, Catholic University of Korea)
  • 발행 : 2002.09.01
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초록

Digital radiography (DR) is being developed for numerous applications in medical imaging. For understanding DR image, it is necessary to comprehend DR responses to X-ray in terms of absorbed energy. This study reports on the relationship of absorbed energy in the scintillator vs. pixel value of detector. Pixel value and exposure were measured from 50 kVp to 120 kVp until the detector was saturated. For representing radiation produced at the X-ray tube, we used program Srs-78 and compared experimental exposure with calculated exposure. Absorbed energy was acquired using spectrum and we got the relation between the two values.

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