Journal of radiological science and technology (대한방사선기술학회지:방사선기술과학)

Korean Society of Radiological Science (대한방사선과학회)
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A Study on the Indirect Radiation Exposure of the Medical Personnel Who is Responsible for Patient Safety in CT Examination

전산화단층촬영검사 시 검사실 내에 위치할 수 있는 의료인의 간접 피폭선량에 대한 연구

  • Choi, Min-Hyeok (Department of Radiology, Seoul Asan Medical Center) ;
  • Jang, Ji-Sung (Department of Radiology, Seoul Asan Medical Center) ;
  • Lee, Ki-Baek (Department of Radiology, Seoul Asan Medical Center)
  • 최민혁 (서울아산병원 영상의학과) ;
  • 장지성 (서울아산병원 영상의학과) ;
  • 이기백 (서울아산병원 영상의학과)
  • Received : 2019.03.24
  • Accepted : 2019.04.23
  • Published : 2019.04.30
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Abstract

A medical personnel could be placed beside a patient together in CT room to do Ambu-bag for a seriously ill patients or emergency patient. At this time, the medical personnel can be exposed indirect radiation unnecessarily. In this case, it is necessary to recognize indirect radiation dose levels and methods to reduce them using actual clinical CT protocols such as Chest, Abdomen, and Brain CT. We researched surface radiation dose with or without radiation protectors such as apron and goggles according to different distances far from gantry using two different CT scanners (Fixed MDCT and mobile CT). As a result, for Chest, Abdomen, and Brain CT with Fixed MDCT, indirect radiation dose on thorax portion were 0.047, 0.089, 0.034 mSv without apron. Also, those with apron were 0.007, 0.012, 0.006 mSv. In case of mobile CT, it was 0.014 mSv without apron and 0.005 mSv with apron. By using protectors and increasing the distance, we could reduce it to 97%. Systematic management is necessary based on the measured data in order to minimize radiation damage due to indirect exposure dose.

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References

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