About the Authors
- Shinichi Shimizu
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Affiliation Department of Radiation Oncology, Hokkaido University Graduate School of Medicine, Sapporo, Hokkaido, Japan
- Naoki Miyamoto
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Affiliation Department of Medical Physics, Hokkaido University Graduate School of Medicine, Sapporo, Hokkaido, Japan
- Taeko Matsuura
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* E-mail: matsuura@med.hokudai.ac.jp
Affiliation Section of Medical Physics, Hokkaido University Hospital Proton Beam Therapy Center, Sapporo, Hokkaido, Japan
- Yusuke Fujii
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Affiliation Hitachi, Ltd., Hitachi Research Laboratory, Omika, Ibaraki, Japan
- Masumi Umezawa
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Affiliation Hitachi, Ltd., Hitachi Research Laboratory, Omika, Ibaraki, Japan
- Kikuo Umegaki
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Affiliation Division of Quantum Science and Engineering, Hokkaido University Graduate School of Engineering, Sapporo, Hokkaido, Japan
- Kazuo Hiramoto
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Affiliation Hitachi, Ltd., Research & Development Group, Omika, Ibaraki, Japan
- Hiroki Shirato
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Affiliation Department of Radiation Oncology, Hokkaido University Graduate School of Medicine, Sapporo, Hokkaido, Japan
Competing Interests
The following is the patent relating to material pertinent to this article: “Moving body pursuit irradiating device and positioning method using this device”; Number: US6307914 B1; Issue Date: 2001-10-23; Inventors: Tatsuya Kunieda, Hiroki Shirato. Yusuke Fujii, Masumi Umezawa, and Kazuo Hiramoto are the permanent employees of Hitachi, Ltd. Their affiliation is as follows: Yusuke Fujii Hitachi, Ltd., Hitachi Research Laboratory. Masumi Umezawa Hitachi, Ltd., Hitachi Research Laboratory. Kazuo Hiramoto Hitachi, Ltd., Research & Development Group. The authors declare this does not alter their adherence to PLOS ONE policies on sharing data and materials.
Author Contributions
Conceived and designed the experiments: MU KU KH HS. Analyzed the data: SS NM TM. Contributed reagents/materials/analysis tools: SS NM YF. Wrote the paper: TM HS.