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Radiation Oncology Lab
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A lab studying radiation therapy that treats cancer with proton beams and high-precision X-rays.

AboutAbout the lab
Toward becoming an oncologist skilled in whole-body cancer care
The Radiation Oncology Lab studies how to treat cancer with radiation.
The lab conducts research on proton therapy at the Proton Beam Therapy Center of Hokkaido University Hospital, and on high-precision radiotherapy such as stereotactic body radiotherapy and intensity-modulated radiation therapy.
Working with medical physicists and basic medical researchers, the lab carries out its research as the radiation therapy division of the Global Center for Biomedical Science and Engineering.
The lab is in charge of the lecture "Radiation Oncology" for fourth-year medical students and of clinical clerkships, and visits are welcome.
Key terms
- Proton therapy
- Radiation therapy that accelerates protons and delivers them from outside the body. The dose peaks at a chosen depth, which makes it easier to limit effects on the surrounding tissue.
- Intensity-modulated radiation therapy
- An irradiation technique that finely varies the intensity of the radiation so that the dose distribution conforms to tumors of complex shape.
- Medical physicist
- A specialist who uses knowledge of physics and engineering to plan radiation therapy and manage the accuracy of the equipment.
NewsLab news
Paper on stereotactic body proton therapy for pancreatic cancer published in Journal of Applied Clinical Medical Physics
Paper on a multicenter study of radiation therapy for lung cancer published in Journal of Radiation Research
Paper on stereotactic radiotherapy for intramedullary spinal cord arteriovenous malformations published in Advances in Radiation Oncology
A doctoral student received the Bronze Medal for Excellent Research Presentation at the Annual Meeting of the Japan Radiological Society
Review paper on radiation therapy for elderly patients with head and neck cancer published in Japanese Journal of Clinical Oncology
ResearchResearch themes
As the radiation therapy division of the Global Center for Biomedical Science and Engineering, the lab's radiation oncologists, medical physicists, and basic medical researchers work together on proton therapy, high-precision X-ray therapy, and radiation biology. The lab also conducts clinical trials of new treatments in cooperation with other clinical departments.
*Illustrative imageProton Therapy
Clinical research on proton therapy at the Proton Beam Therapy Center, which opened in 2014, is a major mission of the lab. The lab carries out this research together with the medical physics section.
*Illustrative imageHigh-Precision X-ray Therapy
The lab studies irradiation techniques and clinical outcomes for stereotactic body radiotherapy, which targets moving tumors such as lung cancer, and for intensity-modulated radiation therapy, which shapes the radiation dose to tumors of complex shape.
*Illustrative imageRadiation Biology
Under the guidance of basic medical researchers, graduate students from the Graduate School of Medicine (physicians) and the Graduate School of Biomedical Science and Engineering conduct radiation biology research on cancer.
*Illustrative imageClinical Trials in Cancer
The lab conducts clinical trials of new treatments in cooperation with other clinical departments, covering cancers of all organs, at scales ranging from single-center studies to studies with affiliated hospitals in Hokkaido, nationwide multicenter studies, and international collaborations.
MembersFaculty
The lab's members are radiation oncology faculty and hospital physicians, medical physics staff, residents, and visiting faculty. The faculty include physicians and medical physicists affiliated with the Department of Radiation Oncology and the Department of Medical Physics at Hokkaido University Hospital. Faculty from the Faculty of Engineering and the Faculty of Health Sciences also provide supervision.As of 2026
- ProfessorHidefumi Aoyama
- ProfessorTakayuki Hashimoto
- Associate ProfessorKoichi Yasuda
- Assistant ProfessorKentaro Nishioka
- Assistant Professor, Department of Radiation OncologyTakashi Mori
- Assistant ProfessorFuki Koizumi
- Assistant ProfessorManami Otsuka
- Assistant Professor, Department of Radiation OncologyShuhei Takahashi
- Assistant Professor, Department of Radiation OncologyTomohiko Miyazaki
- Professor, Quantum Beam Applied Biomedical Engineering Laboratory, Faculty of EngineeringTaeko Matsuura
- Associate Professor, Quantum Beam Applied Biomedical Engineering Laboratory, Faculty of EngineeringNaoki Miyamoto
- Associate ProfessorSeishin Takao
- LecturerKeiji Kobashi
- Assistant Professor, Department of Medical Physics, Hokkaido University HospitalRyusuke Suzuki
- Assistant Professor, Department of Medical Physics, Hokkaido University HospitalMasaya Tamura
- Lecturer, Division of Health Sciences, Graduate School of Health SciencesTakaaki Yoshimura
- Assistant Professor, Department of Medical Physics, Hokkaido University HospitalTakahiro Kanehira
- Assistant ProfessorKohei Yokokawa
- Assistant Professor, Quantum Beam Applied Biomedical Engineering Laboratory, Faculty of EngineeringYe Chen
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Report an errorAbout the images
The top and research theme images are illustrative and were not taken at the lab. They are cropped from Wikimedia Commons images. Cropped CC BY-SA images are provided under the same CC BY-SA license as the original (version shown on each line).
- Top image: “Canadian Science - TRIUMF cyclotron - Flickr - Cargo Cult (10)” Adam Foster / CC BY-SA 2.0 (cropped)
- Proton Therapy: “Harkins 1935 Cyclotron Magnet from University of Chicago, now displayed at Fermilab” Beamjockey / CC0 (cropped)
- High-Precision X-ray Therapy: “Linear Accelerator - Elekta Compact model” Narenfox / CC BY-SA 4.0 (cropped)
- Radiation Biology: “Purple cells” National Cancer Institute / Public domain (cropped)
- Clinical Trials in Cancer: “Комплекс оборудования (линейный ускоритель) TrueBeam STx для проведения лучевой терапии” YuliaNiki / CC BY-SA 4.0 (cropped)
- Related lab (Renal and Genitourinary Surgery Lab): “Kidney noblood” Sheldahl / CC BY-SA 4.0 (cropped)
- Related lab (Neurology Lab): “Neurological tools” Ali Raheem / CC BY-SA 3.0 (cropped)
- Related lab (Pathogenic Microbiology Lab): “HIV-infected H9 T cell2” NIAID/NIH / Public domain (cropped)
- Related lab (Diagnostic Radiology Lab): “Zystenleber 80M - CT KM pv - 001” Hellerhoff / CC BY-SA 4.0 (cropped)
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