Journal of radiological science and technology (대한방사선기술학회지:방사선기술과학)

Korean Society of Radiological Science (대한방사선과학회)
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An Experimental Study of the Inverse Square Law

거리역자승(距離逆自承)의 법칙(法則)에 관(關)한 검사(檢討)

  • Kang, Hong-Seok (Dept. of Radiotechnology, Incheon Junior Nursing College and Allied Health Sciences) ;
  • Kim, Chang-Kyun (Dept. of Radiotechnology, Junior College of Public Health and Medical Technology, Korea University) ;
  • Huh, Joon (Dept. of Radiotechnology, Junior College of Public Health and Medical Technology, Korea University)
  • 강홍석 (인천간호보건전문대학 방사선과) ;
  • 김창균 (고려대학교보건전문대학 방사선과) ;
  • 허준 (고려대학교보건전문대학 방사선과)
  • Published : 1986.11.15
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Abstract

Generally the inverse square law (ISL) is applied by use of intensity scale method, that is distance scale method, when we practice sensitometry of X-ray film. It was reported that the failure of the ISL had occurred in the many experiments. Thus authors obtained some conclusions of the exponent value of distance by use of dosimeter and fluorescence meter in the range of tube voltage 60 - 120 kvp, that is the range of diagnostic energy. Those conclusions were as follows its exponents were produced as 2.1383 - 2.1763 in dosimeter, as 2.1190-2.2152 in fluorescence meter. This revealed that the perfect ISL was failded and that numerical differences were shown in each measurem apparatus. Therefore it is need to study the exponent at each tube voltage for the precise supply of fixed quantity on the characteristic curve's horizontal axis.

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