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Global Center for Biomedical Science and Engineering

Message from Alumni 2

Yusuke Nomura, Ph.D. Postdoctoral scholar, Department of Radiation Oncology, Stanford University My name is Yusuke Nomura. I was a Ph.D. candidate at Department of Radiation Oncology, Graduate School of Medicine, Hokkaido University. During this course, we developed a projection-domain scatter correction method for cone-beam computed tomography (CBCT) using a modified scatter kernel method and evaluated its impact on CBCT-based proton dose calculation. Moreover, a novel CBCT scatter correction method was established using a residual convolutional neural network. These works were partially supported as the GSQ collaborative researches by the Global Institution for Collaborative Research and Education (GI-CoRE) Hub at Hokkaido University. I would like to appreciate Prof. Hiroki Shirato, Prof. Shinichi Shimizu, Prof. Lei Xing, Dr. Qiong Xu, and all GSQ members who supported my works. I also completed a Japanese medical physicist training course certified by the Japanese Board for Medical Physicist Qualification (JBMP). This course covers a broad range of subjects in radiation physics, biomedical engineering and clinical medical physics. Thanks to Hokkaido University Hospital members, I was successfully certified as a medical physicist. After graduating from the Ph.D. course, we established a novel proton dose calculation method using a 3-dimensional convolutional neural network. This network also calculates uncertainty in dose, which improves reliability of deep learning-based techniques for clinical proton therapy. I am currently a postdoctoral scholar at Prof. Xing’s lab of Department of Radiation Oncology, Stanford University School of Medicine. I further try to explore new deep learning-based applications for advanced radiation therapy which can be readily and precisely conducted in clinic. The tremendously valuable skills obtained at Hokkaido University will be useful for future works.
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