Medical Radiation Exposure in Children CT and Dose Reduction

소아 CT 촬영시 방사선 피폭과 저감화 방법

  • 이정근 (동신대학교 방사선학과) ;
  • 장성주 (동신대학교 방사선학과) ;
  • 장영일 (광양보건대학교 방사선과)
  • Received : 2013.11.26
  • Accepted : 2014.01.20
  • Published : 2014.01.28


Recently pediatric CT has been performed by reduced dose according to tube current modulation이라고, this fact has a possibility more reduce a dose because of strong affect depend on tube current modulation. Almost all MDCT snow show and allow storage of the volume CT dose index (CTDIvol), dose length product (DLP), and effective dose estimations on dose reports, which are essential to assess patient radiation exposure and risks. To decrease these radiation exposure risks, the principles of justification and optimization should be followed. justification means that the examination must be medically indicated and useful. Results is using tube current modulation이라고 tend to the lower kV, the lower effective dose. In case of use a low dose CT protocol, we found a relatively lower effective dose than using tube current modulation. Average effective dose of our studies(brain, chest, abdomen-pelvis) less than 47%, 13.8%, 25.7% of germany reference dose, and 55.7%, 10.2%, 43.6% of UK(United Kingdom) reference dose respectively. when performed examination for reduced dose, we must use tube current modulation and low dose CT protocol including body-weight based tube current adaption.


Tube Current Modulation;Effective Dose;Low Dose CT Protocol


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