Progress in Medical Physics (한국의학물리학회지:의학물리)

Korean Society of Medical Physics (한국의학물리학회)
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Analysis of Pitch and Yaw Deviations Using an Aid-Pillow for the Head and Neck Cancer on the TomoTherapy

토모테라피를 이용한 두경부암 방사선치료에서 Aid-pillow 사용에 따른 Pitch와 Yaw의 변화 분석

  • Jung, Jae Hong (Department of Radiation Oncology, College of Medicine, Soonchunhyang University) ;
  • Cho, Kwang Hwan (Department of Radiation Oncology, College of Medicine, Soonchunhyang University) ;
  • Kim, Yong Ho (Department of Radiation Oncology, College of Medicine, Soonchunhyang University) ;
  • Moon, Seong Kwon (Department of Radiation Oncology, College of Medicine, Soonchunhyang University) ;
  • Min, Chul Kee (Department of Radiation Oncology, College of Medicine, Soonchunhyang University) ;
  • Kim, Eun Seog (Department of Radiation Oncology, College of Medicine, Soonchunhyang University) ;
  • Lee, Kyung-Bae (Department of Biomedical Engineering and Research Institute of Biomedical Engineering, The Catholic University of Korea) ;
  • Jung, Joo-Young (Department of Biomedical Engineering and Research Institute of Biomedical Engineering, The Catholic University of Korea) ;
  • Suh, Tae-Suk (Department of Biomedical Engineering and Research Institute of Biomedical Engineering, The Catholic University of Korea) ;
  • Choe, Bo-Young (Department of Biomedical Engineering and Research Institute of Biomedical Engineering, The Catholic University of Korea)
  • 정재홍 (순천향대학교 의과대학 방사선종양학교실) ;
  • 조광환 (순천향대학교 의과대학 방사선종양학교실) ;
  • 김용호 (순천향대학교 의과대학 방사선종양학교실) ;
  • 문성권 (순천향대학교 의과대학 방사선종양학교실) ;
  • 민철기 (순천향대학교 의과대학 방사선종양학교실) ;
  • 김은석 (순천향대학교 의과대학 방사선종양학교실) ;
  • 이경배 (가톨릭대학교 의과대학 의공학교실, 생체의공학연구소) ;
  • 정주영 (가톨릭대학교 의과대학 의공학교실, 생체의공학연구소) ;
  • 서태석 (가톨릭대학교 의과대학 의공학교실, 생체의공학연구소) ;
  • 최보영 (가톨릭대학교 의과대학 의공학교실, 생체의공학연구소)
  • Received : 2012.12.12
  • Accepted : 2013.03.06
  • Published : 2013.03.31
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Abstract

The aim of this study was to analysis of the pitch and yaw deviations with or without using an aid-pillow for the head and neck cancer on the TomoTherapy. A total of 14 head and neck patients were selected to without-group (n=7) and with-group (n=7). A total of 333 MVCT image sets used to evaluate the translational (lateral, longitudinal and vertical) and rotational adjustments (pitch, roll and yaw) with 153 and 180 MVCT image sets at without- and with-group, respectively. Deviations of without- and with-groups were $0.12^{\circ}$ and $0.09^{\circ}$, respectively at pitch. And, deviations without- and with-groups were $0.47^{\circ}$ and $0.17^{\circ}$, respectively at yaw. In generally, with-group had reduced than without-group for the pitch and yaw deviations. Therefore, using an aid-pillow, it will able to increase the reproducibility of treatment for the head and neck cancer patients on the TomoTherapy.

본 연구의 목적은 두경부암 환자에서 aid-pillow 사용에 따른 pitch와 yaw의 변화를 분석하고자 하였다. 두경부암 환자 총 14명을 선정하여 aid-pillow 미사용 그룹(without, n=7)과 사용 그룹(with, n=7)으로 나누어 비교 분석하였다. 총 333회의 MVCT 영상을 이용하여 미사용 그룹(153 image set)과 사용 그룹(180 image set) 각각 종축 일치도(translational adjustments (lateral, longitudinal, vertical))와 회전축 일치도(rotational adjustments (pitch, roll, yaw))를 구하였다. Pitch의 변화 즉, 편차는 미사용 그룹 $0.12^{\circ}$이고, 사용 그룹 $0.09^{\circ}$였다. 그리고, yaw는 미사용 그룹 $0.47^{\circ}$이고, 사용 그룹 $0.17^{\circ}$였다. 전반적으로 사용 그룹이 미사용 그룹에 비해 편차가 작았다. 따라서, 토모테라피를 이용하여 두경부암 방사선치료 시 aid-pillow를 사용하여 pitch와 yaw의 변화를 줄임으로써, 치료의 재현성을 높일 수 있을 것으로 사료된다.

Keywords

References

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