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Position Verification of the RADPOS 4-D <i>In-Vivo</i>Dosimetry System
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作者 Ryosuke Kohno Hidenori Yamaguchi +8 位作者 Kana Motegi Fumiya Tanaka tsunemichi akita Yuki Nagata Kenji Hotta Tomoko Miyagishi Shie Nishioka Takeshi Dohmae Tetsuo Akimoto 《International Journal of Medical Physics, Clinical Engineering and Radiation Oncology》 2015年第4期318-325,共8页
The accuracy of the position measurements obtained by the radiation positioning system (RADPOS) was evaluated under static and dynamic conditions. In the static verifications, the RADPOS was fixed to the treatment cou... The accuracy of the position measurements obtained by the radiation positioning system (RADPOS) was evaluated under static and dynamic conditions. In the static verifications, the RADPOS was fixed to the treatment couch in a photon treatment room and a proton treatment room, and was translocated with the treatment couch in x, y and z directions. Because the presence of magnetic and/or electrically conductive materials can cause a systematic shift in the measured position by distorting the RADPOS transmitted field, the effect of metals on the performance of the positioning system was also investigated. Dynamic verification was performed using the couch drive and a dynamic anthropomorphic thorax phantom. We thus confirmed the utility of RADPOS as a position sensor to perform in vivo dosimetry. 展开更多
关键词 RADPOS MOSFET In-Vivo DOSIMETRY Position Sensor Photon THERAPY Proton Beam THERAPY
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