Journal of radiological science and technology (대한방사선기술학회지:방사선기술과학)

Korean Society of Radiological Science (대한방사선과학회)
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A Study of Radiation Dose and Quality by Using Added Filtration in Chest Radiography

흉부(胸部) X선촬영시(線撮影時) 부가여과사용(附加濾過使用)에 따른 선양(線量)과 선질(線質)에 관(關)한 연구(硏究)

  • You, Byung-Hun (Dept. of Radiology, Soon Chun Hyang University Hospital) ;
  • Chu, Sung-Sil (Dept. of Radiology, College of Medicine, Yonsei University) ;
  • Huh, Joon (Dept. of Radiotechnology, Junior College of Public Health and Medical Technology, Korea University)
  • 유병헌 (순천향대학병원 방사선과) ;
  • 추성실 (연세대학교 의과대학 방사서과) ;
  • 허준 (고려대학교 보건전문대학 방사선과)
  • Published : 1987.12.20
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Abstract

Author has studied for finding the method of decreasing the radiation dose and increasing diagnostic range in chest X-ray radiography. The study for the added filter thickness from half value layer to 1/8 value layer by decreasing curve and research for the exposure factors, decreasing ratio of radiation dose, ratio of scatter ray and image quality in chest X-ray radiography. The results were as follows: 1. By using the rare earth intensifying screen system at 120 Kvp, the sensitivity is increased by times and the exposure ratio is decreased 0.22 by comparison with the $CaWO_{4}$ intensifying screen system at 80 Kvp. 2. By using Al added filter of 1/8 value layer, the scatter ray is increased more than no filter, But the scatter ray is decreased more in $G_{4}/RxOG$ intensifying system than in LT-II/Rx intensifying system. 3. At 120 Kvp, the image quality value of $G_{4}/RxOG$ system is increased more than LT-II/Rx system compared with slight decreasing image quality value at 80 Kvp. Concluded that by using the added filter could decrease the radiation dose by 1/3 and obtain effective image quality with the added filter at high voltage hard exposure.

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