A Proton Beam Therapy System Dedicated to Spot-Scanning Increases Accuracy with Moving Tumors by Real-Time Imaging and Gating and Reduces Equipment Size

• Shinichi Shimizu,

  Affiliation Department of Radiation Oncology, Hokkaido University Graduate School of Medicine, Sapporo, Hokkaido, Japan

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• Naoki Miyamoto,

  Affiliation Department of Medical Physics, Hokkaido University Graduate School of Medicine, Sapporo, Hokkaido, Japan

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• Taeko Matsuura ,

  * E-mail: matsuura@med.hokudai.ac.jp

  Affiliation Section of Medical Physics, Hokkaido University Hospital Proton Beam Therapy Center, Sapporo, Hokkaido, Japan

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• Yusuke Fujii,

  Affiliation Hitachi, Ltd., Hitachi Research Laboratory, Omika, Ibaraki, Japan

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• Masumi Umezawa,

  Affiliation Hitachi, Ltd., Hitachi Research Laboratory, Omika, Ibaraki, Japan

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• Kikuo Umegaki,

  Affiliation Division of Quantum Science and Engineering, Hokkaido University Graduate School of Engineering, Sapporo, Hokkaido, Japan

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• Kazuo Hiramoto,

  Affiliation Hitachi, Ltd., Research & Development Group, Omika, Ibaraki, Japan

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• Hiroki Shirato

  Affiliation Department of Radiation Oncology, Hokkaido University Graduate School of Medicine, Sapporo, Hokkaido, Japan

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