한국방사선학회논문지 (Journal of the Korean Society of Radiology)

  • 제9권7호
  • /
  • Pages.445-448
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  • 2015
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  • 1976-0620(pISSN)
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  • 2384-0633(eISSN)
한국방사선학회 (The Korean Society of Radiology)
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일반촬영 검사에서 필터 두께 증가에 따른 전방산란율에 관한 연구

The Study of Forward Scattering Dose according to the Thickness of Filter in General Radiography

  • 최일홍 (한국국제대학교 방사선학과) ;
  • 김교태 (인제대학교 의용공학과) ;
  • 허예지 (인제대학교 의용공학과) ;
  • 강상식 (한국국제대학교 방사선학과) ;
  • 노시철 (한국국제대학교 방사선학과) ;
  • 정봉재 (한국국제대학교 방사선학과) ;
  • 남상희 (인제대학교 의용공학과) ;
  • 박지군 (한국국제대학교 방사선학과)
  • Choi, Il Hong (Dept. of Radiological Science, International University of Korea) ;
  • Kim, Kyo Tae (Dept. of Biomedical Engineering, Inje University) ;
  • Heo, Ye Ji (Dept. of Biomedical Engineering, Inje University) ;
  • Kang, Sang Sik (Dept. of Radiological Science, International University of Korea) ;
  • Noh, Si Cheol (Dept. of Radiological Science, International University of Korea) ;
  • Jung, Bong Jae (Dept. of Radiological Science, International University of Korea) ;
  • Nam, Sang Hee (Dept. of Biomedical Engineering, Inje University) ;
  • Park, Ji Koon (Dept. of Radiological Science, International University of Korea)
  • 투고 : 2015.09.20
  • 심사 : 2015.12.25
  • 발행 : 2015.12.31
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초록

최근 다색 X-ray 중 저에너지 광자의 비율을 감소시키는 필터에 대한 관심이 대두되고 있으나 X선 경화현상으로 인하여 나타나는 영상 화질에 영향에 대해서는 간과되고 있는 실정이다. 이에 본 연구에서는 필터에 따른 전방산란율의 변화를 평가함으로써 의료영상 품질에 영향을 미치는 산란선량을 정량적으로 고찰하였다. 실험 결과, 필터 두께가 증가함에 따라 최대 13.9%p의 전방산란율이 증가하는 추세가 나타나는 것으로 평가되었다. 이러한 결과를 바탕으로 한국 산업규격에서 권고된 필터 두께를 준수할 경우 환자의 피폭선량을 저감하면서도 약 1%p 이내의 전방산란율 만이 의료영상에 노이즈에 추가적으로 기여할 것으로 사료된다. 그러므로 환자의 피폭선량을 저감화하면서도 의료영상의 품질을 개선하기 위해서는 적절한 필터의 활용이 중요할 것으로 사료된다.

Recently there has been increasing interest in the filter to reduce the proportion of low-energy photons in the polychromatic X-ray, affect the quality of the image quality by X-ray hardening effect is a situation that has been overlooked. In this study, by evaluating the change in FSR based on the filter and it was quantitatively discuss scatter dose affecting the medical image quality. The results of the experiment, as the thickness of the filter is increased, up to 13.9%p, that tends to FSR increases appearance were evaluated. Based on these results, in compliance with the thickness of the filter that has been recommended in KS standard, even while reducing the radiation dose of the patient, in addition to the noise to about 1%p within the FSR only medical image the contribution to it is conceivable. Therefore, even while reducing radiation dose of the patient, in order to improve the quality of the medical image, the use of appropriate filter is considered important.

키워드

참고문헌

  1. IAEA Safety Series No.115 : "International Basic Safety Standards for Protection against Ionizing Radiation and for the Safety of Radiation Sources", Vienna, 1996.
  2. ICRP Publication 103: Recommendations of the International Commission on Radiological Protection, Oxford, 2007.
  3. K.M. Oh, M.S. Yoon, M.W. Kim, et al, "Radiation detector material development with multi-layer by hetero-junction for the reduction of leakage current", The Korean Society of Radiology, Vol. 3, No. 1, pp. 11-15, 2009.
  4. Y.K. Lee, M.S. Yon, D.H. Kim, et al, "The study of X-ray detection characteristic and fabrication photoconductor film thickness for Screen printing method", The Korean Society of Radiography, Vol. 3, No. 2, pp. 11-16, 2009.
  5. Y.B. Kim, M.S. Yun, M.W. Kim, et al, "Development of Radiation Image Sensor using Heterojunction", The Korean Society of Radiology, Vol. 3, No. 3, pp. 27-35, 2009.
  6. J.S. Lee, C.S. Kim, "The Additional Filter and Ion Chamber Sensor Combination Reducing Patient Dose in Digital Chest X-ray Projection", The Korean Society of Radiology, Vol. 9, No. 3, pp. 175-181, 2015. https://doi.org/10.7742/jksr.2015.9.3.175
  7. J. Huh, C.K. Kim, I.J. Lee, et al, "A study on the effect of rare earth screen Filter", The Korean Society of Radiological technology, Vol. 11, No. 1, pp. 17-23, 1988.
  8. "Patient Dose Reference Levels Guidelines of General Radiology", Korea Food & Drug Administration, Radiation safety management series, No. 30, 2012.
  9. I.Y. You, C.H Lim, S.H Lee, et al., "Performance Measurement of Diagnostic X-Ray System", The Korean Society of Radiology, Vol. 6, No. 6, pp. 447-454, 2012. https://doi.org/10.7742/jksr.2012.6.6.447
  10. S.K. Na, S.H. Han, "A Study on the Factors of Spatial Scattered Ray Occurrence in the X-ray Radiography Room", Journal of Radiological Science and Technology, Vol. 32, No. 4, pp. 393-399, 2009.

피인용 문헌

  1. The Study of Affecting Image Quality according to forward Scattering Dose used Additional Filter in Diagnostic Imaging System vol.10, pp.8, 2016, https://doi.org/10.7742/jksr.2016.10.8.597
  2. The Necessity of Resetting the Filter Criteria for the Minimization of Dose Creep in Digital Imaging Systems vol.13, pp.5, 2015, https://doi.org/10.7742/jksr.2019.13.5.757