Koichi Shimizu received M.S. and Ph.D. degrees, from University of Washington (UW), Seattle, USA in 1976 and 1979, respectively. He was a Research Associate in University of Washington in 1974-79. He was an Assistant Professor, an Associate Professor, and a Professor in Hokkaido University, Sapporo, Japan in 1979-2016. He was a Professor in Waseda University in 2016-2021. He is currently a Professor of Xidian University, China, an Invited Research Professor of Waseda University, Japan, and a Professor Emeritus of Hokkaido University, Japan. He has been engaged in the studies of biomedical engineering including those of wave propagation in biological media, optical imaging and measurement, biotelemetry, and biological effects of electromagnetic field. He served as an associate editor of IEEE Trans. ITB in 1999–2007. He has been a Fellow of the Electromagnetics Academy, and an editorial board member of Scientific Reports, Nature.