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Radiation Oncology Lab
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The lab researches radiation therapy and particle therapy that can account for organs that move within the body.

AboutAbout the lab
Curing cancer while preserving the body's function.
The lab studies radiation therapy and particle therapy that eliminate tumors while preserving the body's functions.
One challenge is how to deal with internal organs whose positions constantly shift because of breathing, heartbeat, and bowel movement.
Drawing on cutting-edge engineering and science, the lab aims to develop practical, highly effective devices and treatment techniques.
The faculty member in charge belongs to the Faculty of Medicine.
Key terms
- Particle therapy
- Radiation therapy that accelerates particles such as protons and directs them at the tumor. It makes it easier to concentrate the dose on the cancer.
- Real-time tumor-tracking radiotherapy
- Radiation therapy that tracks the position of a tumor moving with breathing and other motion, and delivers radiation only when the tumor is at the targeted position.
- Medical physicist
- A specialist who uses knowledge of physics and engineering to support radiation therapy planning and the quality of equipment.
ResearchResearch themes
Radiation therapy using X-rays and particle therapy using charged particle beams face challenges such as concentrating the dose on the tumor, reducing the dose to normal tissue, and accounting for organs that keep moving inside the body. Drawing on engineering and science, the lab researches devices and treatment techniques that address these challenges.
*Illustrative imageRadiation Therapy for Moving Organs
The lab studies techniques for handling organ motion during radiation therapy, as well as particle therapy. Through the development of new medical technologies, it trains people who can contribute to higher cure rates and better quality of life (QOL) for patients with cancer and other diseases.
*Illustrative imageProton Therapy for Pediatric and Rare Cancers
For pediatric cancers, rare cancers, and hard-to-treat cancers, the lab applies knowledge and technology from science and engineering to medicine, aiming for next-generation radiation therapy and proton therapy that are highly precise and gentle on the body. Research and development is carried out by teams of physicians, medical physicists, and others.
*Illustrative imageUrologic Cancer Treatment and AI
The lab has studied real-time tumor-tracking radiotherapy and proton therapy for prostate cancer and bladder cancer. Current work includes research on balancing treatment with work, improving irradiation accuracy for organs that change shape such as the bladder, and using AI to improve the quality of the MRI images used for treatment planning.
MembersFaculty
- ProfessorHiroki Shirato
- ProfessorTakayuki Hashimoto
- LecturerKeiji Kobashi
- Assistant ProfessorKentaro Nishioka
VoicesStudent voices
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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: “IMRT Oropharyngeal cancer” Michael Goodyear / CC BY-SA 4.0 (cropped)
- Radiation Therapy for Moving Organs: “Comparison of dose profiles for proton v. x-ray radiotherapy” MarkFilipak / CC BY-SA 3.0 (cropped)
- Proton Therapy for Pediatric and Rare Cancers: “Mevions250” Romina.cialdella / CC BY-SA 4.0 (cropped)
- Urologic Cancer Treatment and AI: “Pelvic MRI T1FSE T2frFSE T2FSfrFSE 16” Nevit Dilmen (talk) / CC BY-SA 3.0 (cropped)
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