The Journal of Korean Society for Radiation Therapy (대한방사선치료학회지)
- Volume 22 Issue 2
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- Pages.135-144
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- 2010
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- 1598-8449(pISSN)
Production and Assessing Usefulness of the Moving Phantom for Respiration Gated Radiotherapy
호흡동조 방사선치료용 팬텀의 제작 및 유용성 평가
- Lee, Yang-Hoon (Department of Radiation Oncology, Seoul National University Hospital) ;
- Lee, Jae-Hee (Department of Radiation Oncology, Seoul National University Hospital) ;
- Yoo, Suk-Hyun (Department of Radiation Oncology, Seoul National University Hospital)
- Received : 2010.05.03
- Accepted : 2010.08.20
- Published : 2010.09.30
Abstract
Purpose: The purpose of this study is that through production of phantom for respiration gated radiotherapy, assessing appropriacy of exposure dose for the therapy using RPM (Real-time Position Management). Materials and Methods: We located measurement object on the phantom for respiration gated radiotherapy made of 2 linear actuator, acrylic panel, stanchion, iron plate ets. to drive (up, down, front, back). Using 4D CT scan, we analyzed patient's respiration and reproduced the movement by computer. On the phantom, we located a 2D-Array (PTW) and an White water phantom (4.5 cm) and used DMLC (interval 2 cm) in the field size
목 적: 호흡동조 방사선치료용 팬텀 제작을 통해 실시간움직임관리(RPM, Real-time Position Management)에 의한 치료시 호흡에 따른 방사선 조사선량의 적절성을 평가 하고자 한다. 대상 및 방법: 호흡동조 팬텀은 선형 액츄에이터(SCN6-050-50, Dyadic, Japan) 2개, 아크릴판, 지지대, 철판 등으로 팬텀위에 측정 대상을 위치시켜 구동 가능(상 하, 전 후)하도록 제작하였다. 4D CT를 촬영해 환자의 호흡을 분석하여 컴퓨터를 통해 팬텀의 위치와 속도를 제어하여 움직임을 재현하였다. 호흡동조 팬텀위에 2D-Array (PTW)와 4.5 cm의 팬텀(White water 4.5 cm)을 위치하여 21 EX 15 MV X선을 100 Mu, 조사야