Calculation Method of Entrance Skin Dose in X-ray Beam Quality Factor

선질계수에 의한 피부입사선량 계산법

  • 김성철 (가천의과학대학교 방사선학과) ;
  • 김종일 (전북대학교 과학학과) ;
  • 안성민 (가천의과학대학교 방사선학과)
  • Published : 2010.02.28


This interest in radiation exposure makes increasing doctor's awareness and knowledge of radiation dose in patients during X-ray test important in reducing patient's uneasiness. However, very few facilities are equipped with measurement instruments. Therefore, an intensive study to find out patient dose using computational method has been initiated. This study used special features of the bit system and NDD-M and directly measured the output dose of diagnostic X-ray instruments used in Korea to create tables. Two different methods were found to be adequate when applied to cases when X-ray outputs were both known and unknown, and comparative experiments with real measurement doses were carried out. Presented methods were found to provide more accurate results compared to the bit system and NDD-M. Therefore, patient dose during clinical trials were found to be more easily acceptable to medical personnel in the radiation field in terms of radiation exposure and reduction of medical X ray dose.


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