Journal of the Korea Convergence Society (한국융합학회논문지)

Korea Convergence Society (한국융합학회)
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A Fusion Study on the Selection of Cyberknife Technique according to the Location of the Pulmonary Tumors

폐종양의 위치에 따른 사이버나이프 기법의 선택에 관한 융합적 연구

  • Kim, Gab-Jung (Division of Radiology, Songho University) ;
  • Kim, Jeong-Ho (Department of Radiation Oncology, Konyang University Hospital) ;
  • Bae, Seok-Hwan (Division of Radiological science, Konyang University) ;
  • Kim, Nak-Sang (Division of Radiology, Songho University) ;
  • Seo, Sun-Yeol (Department of Radiology, Daejeon Eulji Medical Center)
  • 김갑중 (송호대학교 방사선과) ;
  • 김정호 (건양대학교병원 방사선종양학과) ;
  • 배석환 (건양대학교 방사선학과) ;
  • 김낙상 (송호대학교 방사선과) ;
  • 서선열 (대전을지대학교병원 영상의학과)
  • Received : 2019.06.18
  • Accepted : 2019.07.20
  • Published : 2019.07.28
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Abstract

Depending on the location of the lung tumor, the choice of treatment technique should be considered when treating the Cyberknife. The 4DCT images of 18 lung cancer patients were analyzed, and location error values were extracted through application program. The evaluation result was lower than the average position error only in the upper and the inner. These results suggest that the Vertebral tracking technique is effective when it is close to the pulmonary attachment or near the vertebral body, and the Synchrony technique is effective at other positions. In the future, we would like to study cyber knife treatment technique according to the position of the tumor as well as the volume of the lung and the respiratory cycle.

폐 종양의 위치에 따라 사이버나이프 치료 시 치료기법의 선택에 대해 고려해봐야 합니다. 폐암 환자 28명을 대상으로 18개 지점에 대해 4차원 단층촬영영상을 분석하였고, 응용프로그램을 통해 위치오차값을 추출하였다. 평가 결과 상부와 내측에서만 평균 위치오차값보다 낮았다. 이러한 결과를 통해 폐첨부에 가깝거나 척추체부에 가까운 경우 척추추적기법을 적용하는 것이 효율적이며, 이외의 위치에서는 호흡동조기법이 효율적이다. 이에 본연구를 기반으로 하여 향후 폐종양의 폐내 종양의 위치뿐만 아니라 폐활량에 따른 확장범위 및 환자마다 차이가 발생하는 호흡주기에 따라 사이버나이프 치료기법을 선택할 경우 효율적인 치료기법을 선택할 수 있도록 연구하고자 한다.

Keywords

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Fig. 1. Measurement points in T2 level

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Fig. 2. Measurement points in T6 level

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Fig. 3. Measurement points in T11 level

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Fig. 4. The console monitor of cyberknife

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Fig. 5. Result of motion on T2 level

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Fig. 6. Result of motion on T6 level

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Fig. 7. Result of motion on T11 level

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Fig. 8. The graph of PDV

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Fig. 9. The graph of measurement value and mean PDV

Table 1. Information of Subject

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Table 2. The data in column Mean value and Standard deviation of motion length[mm]

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