Journal of the Korea Convergence Society (한국융합학회논문지)

Korea Convergence Society (한국융합학회)
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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
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Abstract

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.

본 연구의 목적은 급성기 허혈성 뇌졸중 환자의 뇌 관류 CT검사 시 피폭선량을 알아보고자 하였다. 특히, 방사선 감수성이 높은 장기들의 장기선량(Organ dose)을 팬텀과 유리선량계를 이용하여 실측해보고, 제조사가 제시한 기존 프로토콜(고정시간기법)과 새로 제시한 융합 프로토콜(조영제 추적기법)을 적용하여 선량을 측정하여 보고, 피폭선량 저감화 방안을 마련하고자 하였다. 분석결과 기존 프로토콜과 비교하여 새로 제시한 융합 프로토콜에서 최고 39.8 %, 최저 5.8 % 장기선량이 감소하였고, 검사 피폭선량인 $CDTI_{vol}$과 DLP 값은 각각 25 % 감소하였으며, 권고 선량 이하로 측정되었다. 위의 분석결과를 바탕으로 기존에 제시된 프로토콜을 점검해보고, 새로 제시한 융합 프로토콜을 적용하여 피폭선량을 감소시켜 국민보건향상에 이바지 해야 할 것이며, 다른 검사에서도 최적의 프로토콜을 찾기 위한 연구가 계속되어져야 할 것으로 사료된다.

Keywords

References

  1. C. G. Kim, "Exposure dose Reduction using Pb banding of own manufacturing", Journal of Digital Convergence, Vol. 11, No. 6, pp. 269-273. 2013. https://doi.org/10.14400/JDPM.2013.11.6.269
  2. C. G. Kim, "Radiation dose reduction effectiveness of a male gonadal shield during 128-MDCT using Glass Detector", Journal of Digital Convergence, Vol. 11, No. 7, pp. 237-242. 2013. https://doi.org/10.14400/JDPM.2013.11.12.237
  3. C. G. Kim, "Spatial dose distribution and exposure dose during lumbar lateral test", International Conference on Convergence Technology, Vol. 5, No. 1, pp.17-22, 2014.
  4. ICRP Publication 87 : Managing patient dose in computed tomography, ICRP, 2000.
  5. S.G. Kweon, Y.M. Kim, C.G. Kim, H.Y. Yang, S.Y. Yang, E.O. Han, "Radiation Control & Magement", pp. 79-86, 2012.
  6. Berringtom de Gonzalez A, Darby S : Risk of cancer from diagnostic X-ray, estimates for the UK and 14 other countries, Lancet, 363, pp.345-351, 2004. https://doi.org/10.1016/S0140-6736(04)15433-0
  7. Lee SC, Kim W, Lim KS, "Factors associated with early presentation and rapid imaging evalustion of acute stroke", Korean Soc Emerg Med, 16, pp.363-370, 2005.
  8. Lloyd-Jones D, Adams RJ, Brown TM, Carnethon M, Dai S, De Simone G, et al., "Heart disease and stroke statistics--2010 update, A report from the American Heart Association", Circulation, pp. e46-e215, 2010.
  9. Koenig M, Klotz E, Luka B, Venderink DJ, Spittler JF, Heuser L. : Perfusion CT of the brain: diagnostic approach for early detection of ischemic stroke. Radiology, pp.85-93, 1998.
  10. Mayer TE, Hamann GF, Baranczyk J, et al., " Dynamic CT perfusion imaging of acute stroke", AJNR Am J Neuroradiol, pp.1441-1449, 2000.
  11. Reichenbach JR, Rother J, Jonetz-Mentzel L, et al., "Acute stroke evaluated by time-to-peak mapping during initial and early follow-up perfusion CT studies", A JNR Am J Neuroradiol, pp.1842-1850, 1999.
  12. U.S. Food and Drug Administration. Safety investigation of CT brain perfusion scans: Update 11/9/2010. Available from: http//www.fda.gov/MedicalDevices/Safety/AlertsandNotices/ucm185898.htm
  13. Ensuring the legitimacy of the guidelines on the CT scan: Korea Food & Drug Administration, 2012.
  14. Mettler FA Jr, Wiest PW, Locken JA, Kelsey CA. CT scanning:patterns of use and dose. J Radiol Prot 2000; 20:353359
  15. Health Insurance Review and Assessment Service, Health Insurance Statistics Yearbook; 2005, 2008.
  16. Chiyoda : Dose Ace glass dosimeter reader manual, 2001.
  17. Euclid Seeram, "Computed Tomography : Physical principle", Clinical Applications & Quality Control, W. B. Saunders, pp.220-223, 1994.
  18. Lee CI, Haims AH, Monico EP, et al., "Diagnostic CT scans: assessment of patient, physician, and radiologist awareness of radiation dose and possible risks" Radiology, 231, pp.393-398, 2004. https://doi.org/10.1148/radiol.2312030767
  19. ICRP Publication 73 : Recommendations of the International Commission on Radiological Protection, 1996.
  20. NRPB : Survey of CT Practice in the UK Part 2,3 : Dosimetric Aspects, National Radiological Protection Board, NRPB-R250, 1991.
  21. GSF : The calculation of dose from external photon exposure using reference human phantoms and Monte Carlo method, Part VI : Organ doses from tomographic examinations, Gesellschaft fur Strahlenund Umweltforschung mbH, GSF Rep 30/91, 1991.
  22. K.K.L. Fung, W.B. Gilboy, "Anode heel effect on patient dose in lumbar spine radiography", Br. J. Radiol, 73, pp.531-536, 2000. https://doi.org/10.1259/bjr.73.869.10884750
  23. ICRP Publication 103, "The 2007 Recommendation of the international Commission on Radiological Protection", Ahn. ICRP(2007)37(2/3), Oxford, UK : Elsevier Science, 2007.
  24. Chiyo Yamauchi-Kawaura, Keisuke Fujii, Takahiko Aoyama, et al., "Evaluation of radiation doses from MDCT imaging in Otolaryngology", Radiation Protection Dosimetry, pp.38-44, 2010.

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