Journal of radiological science and technology (대한방사선기술학회지:방사선기술과학)

Korean Society of Radiological Science (대한방사선과학회)
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Analysis of Scatter Ray Distribution Using GEANT4-GATE Simulation and Effectiveness of Silicone Pad in Digital Mammography

디지털유방촬영에서 Geant4-GATE를 이용한 산란선의 영향분석과 감소방안에 관한 연구

  • Kim, Myeong-soo (Proton Therapy Center National Cancer Center) ;
  • Kim, Young-kuen (Dept of Radiologic Technology Gwangju Health University) ;
  • Jang, Young-Il (Dept of Radiologic Technology Gwangyang Health Sciences University)
  • 김명수 (국립암센터 양성자치료센터) ;
  • 김영근 (광주보건대학교 방사선과) ;
  • 장영일 (광양보건대학교 방사선과)
  • Received : 2019.04.29
  • Accepted : 2019.06.20
  • Published : 2019.06.30
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Abstract

In this study, we have researched the effectiveness of silicone pad. A distribution of scatter ray in mammography was evaluated using Monte-Carlo (MC) simulation technique and then a silicone pad was applied to remove the scatter ray for improving image quality. Molybdenum target and Molybdenum filter combination made a difference of 59.8% to a number of photon at 17.5 keV. On the other hand, Tungsten target and Rhodium filter showed a variation of 24.5% at 20 keV. Mean 68 of SNR was increased in Selenia and mean 1.04 of SNR was raised in Senographe. Silicone pad was significantly effective to reduce the scatter ray that was generated by primary X-ray. It can decrease an absorption rate of scatter ray to patient body and whilst it improve the image quality from increasing SNR.

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References

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