Design of an adaptive radiation therapy system for target movement compensation_Journal of Biomedical Engineering

Authors：

 CHEN Renjin , WU Jingbo , SUN Xiaoyang , YANG Bo , PANG Haowen

Department of Oncology, The Affiliated Hospital of Southwest Medical University, Luzhou, Sichuan 646000, P.R.China;

Corresponding author：

CHEN Renjin, Email: chenjin1022@163.com

Keywords：

radiation therapy; control system; treatment couch; target movement

DOI：

10.7507/1001-5515.201603038

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In order to decrease the radiotherapy error caused by target motion, an adaptive radiation therapy system for target movement compensation has been designed and passed by simulation test. The real-time position of the target labelled by a mark was captured by the control system and compared with the reference point. Then the treatment couch was controlled to move in the opposite direction for compensation according to that position information. The three dimensional movement of the treatment bed relied on three independent stepping motors which were controlled by a control system. Experiments showed that the adaptive radiation therapy system was able to reduce the therapy error caused by target movement. It would be useful in radiotherapy clinical practice with high real-time position precision.

Citation： CHEN Renjin, WU Jingbo, SUN Xiaoyang, YANG Bo, PANG Haowen. Design of an adaptive radiation therapy system for target movement compensation. Journal of Biomedical Engineering, 2017, 34(2): 297-302. doi: 10.7507/1001-5515.201603038 Copy

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1. 于金明, 姚春萍. 呼吸控制技术用于放射治疗的研究进展. 中华肿瘤杂志, 2006, 28(1): 1-3.
2. Wong J W, Sharpe M B, Jaffray D A, et al. The use of active breathing control (ABC) to reduce margin for breathing motion. Int J Radiat Oncol Biol Phys, 1999, 44(4): 911-919.
3. Minohara S, Kanai T, Endo M, et al. Respiratory gated irradiation system for heavy-ion radiotherapy. Int J Radiat Oncol Biol Phys, 2000, 47(4): 1097-1103.
4. 饶运涛, 邹继军, 郑勇芸. 现场总线 CAN 原理与应用技术. 北京: 北京航空航天大学出版社, 2003.
5. Erridge S C, Seppenwoolde Y, Muller S H, et al. Portal imaging to assess set-up errors, tumor motion and tumor shrinkage during conformal radiotherapy of non-small cell lung cancer. Radiother Oncol, 2003, 66(1): 75-85.
6. 杨敬渠, 李庆刚. 医科达医用直线加速器电路板故障维修. 医疗卫生装备, 2009, 30(10): 129.

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