Ryuichi Okayasu, PhD
Senior Researcher, Research Center for Radiation Protection/Research Center for Charged Particle Therapy, National Institute of Radiological Sciences, Anagawa, Inage-ku, Chiba-shi, Japan; Faculty Affiliate, Colorado State University, Ft. Collins, CO, USA
Ryuichi Okayasu received his Ph.D. in radiation biology from Colorado State University, USA in 1987 and worked as a post-doctoral fellow at Thomas Jefferson University, Philadelphia and MD Anderson Cancer Center, Houston. He next took a position at Columbia University as an associate research scientist before moving to the University of Texas Medical Branch at Galveston in 1995 as an assistant professor and then onto Colorado State University. In 2002, he moved back to Japan to become a team leader at the International Space Radiation Laboratory (ISRL), National Institute of Radiological Sciences (NIRS). In 2005 he was appointed as Director of ISRL. In 2006, he was transferred to the Research Center for Charged Particle Therapy, NIRS and became Director of the Heavy Ion Radiobiology Research Group. After mandatory retirement in 2011, he was appointed as scientific secretary/research scientist at newly established International Open Laboratory (IOL) at NIRS. He worked at IOL for three years and in 2014 he was appointed as senior researcher at NIRS, continuing his radiobiology/cancer biology research. He also holds a faculty affiliate position at Department of Environmental and Radiological Health Sciences, Colorado State University since 2002. His main interests are cellular and molecular radiation biology and its application to radiation therapy. Particularly, his recent interest extends to heavy ion radiobiology and its clinical applications.