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국내 흉부 X-선 검사에 따른 유효선량 계산

Calculation of Effective Dose on Domestic Chest PA X-ray Examinations

  • 최석윤 (부산가톨릭대학교 보건과학대학 방사선학과)
  • Choi, Seokyoon (Department of Radiological Science, Catholic University of Pusan)
  • 투고 : 2018.12.13
  • 심사 : 2018.12.31
  • 발행 : 2018.12.30

초록

대규모 데이터에 기반한 실제 사용 조건의 장기유효선량 분석 연구는 부족하다. 본 연구에서는 국내 324개 의료기관에서 사용하는 흉부 X건 검사의 노출조건에 대해 전산모사를 이용한 장기선량을 계산하고 평가하였다. 실험결과, 저에너지 파라미터 대역에서 유효선량은 0.024 mSv이고 비장, 부신, 폐 순으로 높았다. 고에너지 노출파라미터 대역에서 유효선량은 0.123 mSv이고 신장, 비장, 부신 순으로 높게 나왔다. Park의 연구에서 제안한 화질과 피폭을 고려한 최적의 조건을 사용했을 때 유효선량은 0.017 mSv 로 나타났다. 사용 에너지가 높아질수록 장기 전체의 유효선량이 높아지고 그 중 신장이 가장 크게 증가하였다. 연구결과는 흉부X선 검사 시 참고자료가 되고 환자 피폭저감에 도움을 줄 것이다.

Research on effective dose analysis of actual conditions of use based on large data is scarce. In this study, the exposure conditions of Chest X-Ray examinations used by 324 medical institutions in Korea were calculated and evaluated using computer simulations. As a result of the experiment, the effective dose in the low energy parameter bands was 0.024 mSv, followed by spleen, adrenal glands, and lung. The effective dose in the high-energy exposure parameter band was 0.123 mSv, followed by height, spleen and adrenal glands. The effective dose was 0.017 mSv when the optimal conditions considered the quality and exposure proposed in Park's study were used. The results of the study will be a reference for chest X-rays and will help reduce patient exposure.

키워드

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Fig. 1. ALALA v2.0 effective dose calcuration.

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Fig. 4. Compare with GE and optimal exposure parameter (effective dose).

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Fig. 2. Effective doses to all organs (5 mAs, 2 mmAl, IP:14×14).

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Fig. 3. Effective doses to all organs (10 mAs, 1 mmAl, IP:14×17).

Table 1 . Exposure parameters of Chest X-ray in Korea

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Table 2. Organ dose of each tube voltages (1 mmAl, 10 mAs)

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Table 3. Organ dose of each exposure paraeters (1 mmAl)

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참고문헌

  1. Guidelines for patient dose recommendations for general radiology surveillance, Food and Drug Safety Division, Radiation safety management series No. 30, 2012.
  2. National surveillance data collection and analysis for establishing standard imaging techniques in radiological examinations and surveillance of radiological examinations at medical institutions using Delphi process, Research Project 13172 radiation 575, Korea Univ, 2013.
  3. B. Park, D. W. Sung, "A comparative study of image quality and radiation dose with changes in tube voltage and current for a digital chest radiography," Journal of korean society radiology, Vol. 62, No. 2, pp. 131-137, 2010. https://doi.org/10.3348/jksr.2010.62.2.131
  4. A study on patient dose history management in the field of radiology, Research Project 1475007238, Kyung Hee Univ, 2013.
  5. J. W. Gil, "Estimated exposure dose and usage of radiological examination of the national health screening," Journal of radiation protection, Vol. 39, No. 3, 142-149, 2014. https://doi.org/10.14407/jrp.2014.39.3.142