Research
My aim is to develop solutions to the problems of the clinical field by using the knowledge and technology of Science and Engineering. The web, programing and database technique are used for contribution to the clinical field and research. In addition, we are responsible for training the medical physicist who is able to offer the contribution to the society.
I conduct the research about the quality of treatment planning with students of our laboratory. Recent X-ray treatment technique, such as Intensity modulated radiation therapy (IMRT) or Volumatic Modulated Arc Therapy (VMAT) is sophisticated technique. By controlling the treatment device complexly, it enables to deliver the high radiation dose to the target and reduce the dose to the normal tissue. However, planning such complicated dose distribution treatment plan, the planning process becomes complicated as well and planning time and quality of the plan depend on the planner’s knowledge and experiences. Also, optimization of dose distribution depends on the patient’s anatomy and these makes evaluation of plan quality difficult. As a result, in the case of complex site where target is located near the organ at risk, it is considered that the plan quality depends largely on planners. We will try to provide the making decisions for individual treatment planning and making the system less dependency of treatment planner.
Key Publications
Published Papers
- Masaya Tamura, Hideyuki Sakurai, Masashi Mizumoto, Satoshi Kamizawa, Shigeyuki Murayama, Haruo Yamashita, Seishin Takao, Ryusuke Suzuki, Hiroki Shirato and Yoichi M. Ito, Lifetime attributable risk of radiation-induced secondary cancer from proton beam therapy compared with that of intensity-modulated X-ray therapy in randomly sampled pediatric cancer patients, Journal of Radiation Research 55 (2017) 363.
- Takaaki Yoshimura, Rumiko Kinoshita, Shunsuke Onodera, Chie Toramatsu, Ryusuke Suzuki, Yoichi M. Ito, Seishin Takao, Taeko Matsuura, Yuka Matsuzaki, Kikuo Umegaki, Hiroki Shirato, Shinichi Shimizu, NTCP modeling analysis of acute hematologic toxicity in whole pelvic radiation therapy for gynecologic malignancies - A dosimetric comparison of IMRT and spot-scanning proton therapy (SSPT), Physica Medica 32(9) (2016) 1095.
- Keiichi Harada, Norio Katoh, Ryusuke Suzuki, Yoichi M. Ito, Shinichi Shimizu, Rikiya Onimaru, Tetsuya Inoue, Naoki Miyamoto, Hiroki Shirato, Evaluation of the Motion of Lung Tumors During Stereotactic Body Radiation Therapy (SBRT) with Four-Dimensional Computed Tomography (4DCT) using Real-time Tumor-tracking Radiotherapy System (RTRT), Physica Medica 32(2) (2016) 305.
- Masayori Ishikawa, Naomi Nagase, Taeko Matsuura, Junichi Hiratsuka, Ryusuke Suzuki, Naoki Miyamoto, Kenneth Sutherland, Katsuhisa Fujita, Hiroki Shirato, Development of a wavelength-separated type SOF dosimeter to compensate for the Cerenkov radiation effect, Journal of Radiation Research, 56(2) (2015) 372.
- Naoki Miyamoto, Masayori Ishikawa, Kenneth Sutherland, Ryusuke Suzuki, Taeko Matsuura, Chie Toramatsu, Seishin Takao, Hideaki Nihongi, Shinichi Shimizu, Kikuo Umegaki, and Hiroki Shirato, A motion compensated image filter for low dose fluoroscopy in real-time tumor-tracking radiotherapy system, Journal of Radiation Research 56(1) (2015) 186.
Subsidy
- Adoption of “Hotta Memorial research donation” Faculty of Medicine / Graduate School of Medicine, Hokkaido University.