대한방사선치료학회지 (The Journal of Korean Society for Radiation Therapy)

대한방사선치료학회 (Korean Society for Radiation Therapy)
권호 표지

MVCT를 이용한 치료 간(Interfraction) 그리고 치료 중(Intrafraction) 내부 장기 변화 분석

Analysis of change of internal organ in the Inter-and Intrafraction using MVCT

  • 정원석 (경희의료원 방사선종양학과) ;
  • 김주호 (연세암센터 방사선종양학과) ;
  • 김영재 (대구보건대학교 방사선과) ;
  • 신령미 (경희의료원 방사선종양학과) ;
  • 오정훈 (경희의료원 방사선종양학과) ;
  • 정건아 (경희의료원 방사선종양학과) ;
  • 조준영 (경희의료원 방사선종양학과) ;
  • 김기철 (경희의료원 방사선종양학과) ;
  • 최태규 (경희의료원 방사선종양학과)
  • Jung, Won Seok (Department of Radiation Oncology, Kyunghee College Hospital) ;
  • Kim, Ju Ho (Department of Radiation Oncology, Yonsei Cancer Center) ;
  • Kim, Young Jae (Department of Radiological Technology, Daegu Health College) ;
  • Shin, Ryung Mi (Department of Radiation Oncology, Kyunghee College Hospital) ;
  • Oh, Jeong Hun (Department of Radiation Oncology, Kyunghee College Hospital) ;
  • Jeong, Geon A (Department of Radiation Oncology, Kyunghee College Hospital) ;
  • Jo, Jun Young (Department of Radiation Oncology, Kyunghee College Hospital) ;
  • Kim, Gi Chul (Department of Radiation Oncology, Kyunghee College Hospital) ;
  • Choi, Tae Kyu (Department of Radiation Oncology, Kyunghee College Hospital)
  • 투고 : 2014.03.25
  • 심사 : 2014.04.30
  • 발행 : 2014.06.30
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초록

목 적 : 다양한 치료 부위에 따라 MVCT(Megavoltage computed tomography)를 이용하여 치료 중(Intrafraction), 치료 간(Interfraction)의 장기 위치 변화를 측정하여 평가하고자 한다. 대상 및 방법 : 본 연구에서 두 경부(Head & neck), 흉부(Thorax), 간(Liver), 전립선(Prostate) 종양을 가진 48명 환자들은 전체 치료 과정동안 다양한 MVCT scan을 시행하였다. 평균 환자 당 60개의 MVCT 영상을 획득하여 분석하였다. 결 과 : 치료 간(Interfraction)오차는 흉부와 복부 그리고 골반이 종 방향(Longitudinal, Y)에서 3 mm 이상의 차이를 보였다. 치료 중(Intrafraction) 변화를 알아보기 위해 치료가 끝난 후에 MVCT를 찍어 확인한 후 치료 중(Intrafraction) 움직임 차이는 종 방향에서 2 mm 내외로 나타났다. 또한 치료 전과 후의 움직임의 변화로 인해 치료 간 그리고 치료 중의 차이를 확인하였다. 결 론 : 본 연구에서도 두 경부(Head & neck), 흉부(Thorax), 간(Liver), 전립선암(Prostate cancer) 환자들의 치료 간(Interfraction) 변화와 치료 중(Intrafraction)변화를 통해 적절한 고정 기구와 표적 여백의 윤곽을 완성하는데 도움이 될 거라 사료된다.

Purpose : Depending on a variety of therapeutic areas using MVCT(Megavoltage computed tomography) intra-and interfraction is to evaluate changes in patient position. Materials and Methods : In this study, head and neck, thorax, liver, and prostate tumor patients, 48 people with a full course of treatment for patients with various MVCT scan was performed. Average 60 per patient MVCT images were acquired and analyzed. Results : Interfraction error thorax and abdomen, and pelvis in the longitudinal difference was more than 3 mm. Intrafraction to see a change after the end of treatment MVCT taken, and the results confirmed Intrafraction 2 mm in motion around the longitudinal difference. In addition, due to changes in the movement before and after treatment, Inter-and Intrafraction difference was found. Conclusion : In the present study, the Head and Neck, Thorax, liver, prostate cancer in patients with inter-and intrafraction changes and target the appropriate fixtures to complete the outline of the margin would be helpful is considered.

키워드

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