Journal of radiological science and technology (대한방사선기술학회지:방사선기술과학)

Korean Society of Radiological Science (대한방사선과학회)
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Evaluation of Asymetric Film-Screen System

비대칭(非對稱) 필름-스크린 시스템에 관한 검토(檢討)

  • Huh, Joon (Dong A X-ray Co., Ltd. Institute of Radiological Technology) ;
  • Kim, Jung-Min (Dong A X-ray Co., Ltd. Institute of Radiological Technology) ;
  • Lee, Sun-Sook (Dong A X-ray Co., Ltd. Institute of Radiological Technology) ;
  • Lee, In-Ja (Dong A X-ray Co., Ltd. Institute of Radiological Technology) ;
  • Choi, Jong-Hak (Dept. of Radiolochnology, Junior College of Allied Health Science, Korea University) ;
  • Kim, Sung-Soo (Dept. of Radiotechnology, Shin Gu Junior College)
  • 허준 (동아엑스선기계 방사선기술연구소) ;
  • 김정민 (동아엑스선기계 방사선기술연구소) ;
  • 이선숙 (동아엑스선기계 방사선기술연구소) ;
  • 이인자 (동아엑스선기계 방사선기술연구소) ;
  • 최종학 (고려대학교 병설 보건전문대학 방사선과) ;
  • 김성수 (신구전문대학 방사선과)
  • Published : 1993.05.22
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Abstract

Asymetric system have been introduced in these years by KODAK company nam of Insight system for the purpose of improve the chest image. We have had a problem of chest radiology that it is very difficult to visualize the lung field and modiastinal region at one shot. That's why we are the RT using the technique of high voltage hard quality radiography in chest radiography. Also it is known the c-type wide latitude film can lift up the density of mediastinal structures. Authors investigated the photographic characteristics and physical structure of Insight system. Method 1. Investigated the structure of Emulsion layer. Calculated the particle size of Insight system using SEM(Scanning Electron Microscope). 2. Photographic characteristics has been compared the Insight system with the ortho KM/MG combination in $60{\sim}120kV$ range. Results 1. The particle size of backside film were investigated about 2 times larger that of front side film. 2. The front and backscreen's thickness ratio was detected 1 : 3.87, that the backscreen's thickness was thicker than frontscreen. 3. At the view point of photographic characteristics the frontside of insight system make up the contrast, backside make up the density at low exposure lesion.

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