A Study on the Radiation Exposure Dose of Brain Perfusion CT Examination a Phantom

Phantom을 이용한 뇌 관류 CT검사에서 방사선 피폭선량에 관한 연구

  • Jung, Hong-Rynag (Dept. of Radiological Science, Hanseo University) ;
  • Kim, Ki-Jeong (Dept. of Health Care, Hanseo University) ;
  • Mo, Eun-Hee (Dept. of Diagnostic Radiology, Wonkwang University Hospital)
  • 정홍량 (한서대학교 방사선학과) ;
  • 김기정 (한서대학교 보건의료학과) ;
  • 모은희 (원광대학교병원 영상의학과)
  • Received : 2015.08.03
  • Accepted : 2015.10.20
  • Published : 2015.10.31


The purpose of this study, was Let's examine the exposure dose at the time of cerebral blood flow CT scan of acute ischemic stroke patients. In particular, long-term high doses of radiation sensitive organs and we Measured using phantom and a glass dosimeter. Apply the existing protocol suggested by the manufacturer (fixed time delay technique) and the proposed new convergence protocol (bolus tracking technique), reporting to measure the dose, dose reduction was to prepare the way. Results up to 39.8% as compared to the existing protocols in a new suggested convergence protocol, a minimum of 5.8% was long-term dose is reduced. Test dose of $CDTI_{vol}$ and DLP values decreased 25%, respectively, were measured at less than recommended dose. Try checking the protocol set out in the existing based on the analysis result of the above, by applying the proposed new convergence protocol by reducing the dose would have to contribute to improved public health. It is believed to be research continues to find the optimum protocol in the other tests.


Phantom;Dose;Perfusion CT;Bolus tracking technique;Fixed time delay technique;Convergence protocol


Supported by : 한서대학교


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