Journal of the Korea Convergence Society (한국융합학회논문지)

Korea Convergence Society (한국융합학회)
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Convergence Comparison of Metal Artifact Reduction Rate for Pacemaker Insertion of CT Imaging Phantoms in the Raw Data with MAR Algorithm

심박조율기 삽입 팬텀의 CT영상 원시데이터에 금속인공물감소 알고리즘 적용 시 금속인공물 감소율의 융합적 비교

  • Kim, Hyeon-ju (Department of Radiologic Technol3gy, Dongnam Health University) ;
  • Yoon, Joon (Department of Radiologic Technol3gy, Dongnam Health University)
  • 김현주 (동남보건대학교 방사선과) ;
  • 윤준 (동남보건대학교 방사선과)
  • Received : 2016.10.25
  • Accepted : 2017.01.20
  • Published : 2017.01.28
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Abstract

In the analyzed cardiac CT algorithm applied when comparing the MAR self-made metal artifact reduction in pacemaker inserted phantom degree. Result of comparing the energy value by CT showed a decrease in the CT value in the case of BKG 40 KeV in WSA maximum decreased to 663.2% in the case of 140 KeV BHA were increased a maximum of 56.2%. In addition, the maximum was decreased by approximately 145% based on a 70 KeV artifacts in CT value comparison by type WSA, BHA was to increase up to approximately 46.38%. MAR Algorithm is believed to provide a more quality cardiac CT image if the energy changes, or have the effect that by type and irrespective of reduced metal artifacts occurrence of artifacts applied to the pacemaker when tracking a heart CT scan after inserting MAR algorithm.

심장CT를 스캔하여 MAR알고리즘 적용 시 자체 제작한 Pacemaker삽입팬텀의 금속인공물 감소 정도를 비교 분석해 보았다. 에너지별 CT value를 비교한 결과 BKI에서 CT value의 증감이 있었으며 WSA에서 40 KeV의 경우 663.2%로 최대감소, BHA에서 140 KeV의 경우 56.2%로 최대로 증가 하였다. 또한, 70 KeV기준으로 인공물 형태별 CT value 비교결과 WSA에서 최대 약 145% 감소하였고, BHA에서는 최대 약 46.38%증가 하였다. MAR알고리즘 적용 은 에너지 변화 또는 인공물의 종류와 무관하게 금속 인공물 발생을 감소시켜주는 효과가 있어 Pacemaker삽입 후 심장CT로 추적검사 시 MAR알고리즘을 적용한다면 보다 질 좋은 심장CT 영상을 제공할 것으로 사료된다.

Keywords

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