대한방사선기술학회지:방사선기술과학 (Journal of radiological science and technology)

  • 제3권1호
  • /
  • Pages.57-66
  • /
  • 1980
  • /
  • 2288-3509(pISSN)
  • /
  • 2384-1168(eISSN)
대한방사선과학회 (Korean Society of Radiological Science)
권호 표지

흉부(胸部) 고관전압(高管電壓) 촬영(撮影)에 있어 Air Gap Technique를 이용한 산란선(散亂線) 경감(輕減)에 관(關)한 연구(硏究)

Reduction of Scattered Radiation by Air Gap Technique for High Kilovoltage Chest Roentgenography

  • 허준 (고려대학교 보건전문대학 방사선과) ;
  • 김창균 (고려대학교 보건전문대학 방사선과) ;
  • 강홍석 (고려대학교 보건전문대학 방사선과) ;
  • 윤철호 (동남보건전문대학 방사선과) ;
  • 이상석 (동남보건전문대학 방사선과) ;
  • 임한영 (원광보건전문대학 방사선과) ;
  • 송재관 (대구보건전문대학 방사선과)
  • Huh, Joon (Dept. of Radiotechnology, Junior College of Public Health and Medical Technology, Korea University) ;
  • Kim, Chang-Kyun (Dept. of Radiotechnology, Junior College of Public Health and Medical Technology, Korea University) ;
  • Kang, Hong-Seok (Dept. of Radiotechnology, Junior College of Public Health and Medical Technology, Korea University) ;
  • Youn, Chul-Ho (Dept. of Radiotechnology, Dong Nam Junior Health College) ;
  • Lee, Sang-Suk (Dept. of Radiotechnology, Dong Nam Junior Health College) ;
  • Lim, Han-Young (Dept. of Radiotechnology, Won Kwang Public Health Junior College) ;
  • Song, Jae-Kwan (Dept. of Radiotechnology, Tai Gu Junior Health College)
  • 발행 : 1980.07.18
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초록

X-ray grid is the most important means to reduce the scattered ray from patients, but alternative way is air gap technique that is another name of Groedel technique. This technique is mainly used in chest radiography. Authors performed an experimental study on the air gap technique for chest radiography and obtained the results as follows; 1. In using the high voltage air technique, scattered ray could be reduced effectively, while the percentage of scattered ray was slightly increased than conventional grid technique. 2. In film contrast, 30cm air gap technique was inferior to 12:1 grid technique and contrast improvement was increased when the object was thicker and higher voltage was used. 3. The patient exposure dose was reduced about $25{\sim}45%$ compared with conventional grid technique by air gap technique used.

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