Journal of radiological science and technology (대한방사선기술학회지:방사선기술과학)

Korean Society of Radiological Science (대한방사선과학회)
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Entrance Surface Dose according to Dose Calculation : Head and Wrist

피폭선량 산출을 통한 피부입사선량 계산: 머리 및 손목을 중심으로

  • Sung, Ho-Jin (Department of Radiology, Chonnam National University Hospital) ;
  • Han, Jae-Bok (Department of Radiological Science, Dongshin University) ;
  • Song, Jong-Nam (Department of Radiological Science, Dongshin University) ;
  • Choi, Nam-Gil (Department of Radiological Science, Dongshin University)
  • 성호진 (전남대학교병원 영상의학과) ;
  • 한재복 (동신대학교 방사선학과) ;
  • 송종남 (동신대학교 방사선학과) ;
  • 최남길 (동신대학교 방사선학과)
  • Received : 2016.07.20
  • Accepted : 2016.09.19
  • Published : 2016.09.30
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Abstract

This study were compared with the direct measurement and indirect dose methods through various dose calculation in head and wrist. And, the modified equation was proposed considering equipment type, setting conditions, tube voltage, inherent filter, added filter and its accompanied back scatter factor. As a result, it decreased the error of the direct measurement than the existing dose calculation. Accordingly, diagnostic radiography patient dose comparison would become easier and radiogrphic exposure control and evaluation will become more efficient. The study findings are expected to be useful in patients' effective dose rate evaluation and dose reduction.

본 연구에서는 진단용 X선 검사에서 환자에게 피폭되는 두부 및 사지를 다양한 선량 계산법을 통해 실측 선량과 비교 실험하였다. 또한 촬영 장비의 형태, 장비 설정조건, X선의 용량, X선관과 환자와의 거리, X선 후방산란차이 등을 고려한 새로운 계산 방법을 제시하여 피폭선량을 산출하였다. 그 결과 피부입사선량이 기존의 선량 계산법보다 실측과의 오차가 줄어들었으며, 환자가 피폭되는 선량을 쉽게 계산할 수 있었고 의료선량 평가가 이루어지게 되어 방사선 관련 종사자들의 의료 선량 관리가 더욱 수월해지는 계기가 될 것으로 사료된다.

Keywords

References

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