Development of the compact proton beam therapy system dedicated to spot scanning with real-time tumor-tracking technology
- Hitachi Research Laboratory, Hitachi, Ltd., 7-2-1 Omika-cho, Hitachi Ibaraki 319-1221 (Japan)
- Hitachi Works, Hitachi, Ltd., 3-1-1 Saiwai-cho, Hitachi Ibaraki 317-8511 (Japan)
- Department of Medical Physics, Hokkaido University Graduate School of Medicine, Kita 15 Nishi 7, Sapporo Hokkaido 060-0815 (Japan)
- Department of Radiation Medicine, Hokkaido University Graduate School of Medicine, Kita 15 Nishi 7, Sapporo Hokkaido 060-0815 (Japan)
Hokkaido University and Hitachi Ltd. have started joint development of the Gated Spot Scanning Proton Therapy with Real-Time Tumor-Tracking System by integrating real-time tumor tracking technology (RTRT) and the proton therapy system dedicated to discrete spot scanning techniques under the {sup F}unding Program for World-Leading Innovative R and D on Science and Technology (FIRST Program){sup .} In this development, we have designed the synchrotron-based accelerator system by using the advantages of the spot scanning technique in order to realize a more compact and lower cost proton therapy system than the conventional system. In the gated irradiation, we have focused on the issues to maximize irradiation efficiency and minimize the dose errors caused by organ motion. In order to understand the interplay effect between scanning beam delivery and target motion, we conducted a simulation study. The newly designed system consists of the synchrotron, beam transport system, one compact rotating gantry treatment room with robotic couch, and one experimental room for future research. To improve the irradiation efficiency, the new control function which enables multiple gated irradiations per synchrotron cycle has been applied and its efficacy was confirmed by the irradiation time estimation. As for the interplay effect, we confirmed that the selection of a strict gating width and scan direction enables formation of the uniform dose distribution.
- OSTI ID:
- 22116982
- Journal Information:
- AIP Conference Proceedings, Vol. 1525, Issue 1; Conference: 22. international conference on application of accelerators in research and industry, Ft. Worth, TX (United States), 5-10 Aug 2012; Other Information: (c) 2013 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); ISSN 0094-243X
- Country of Publication:
- United States
- Language:
- English
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