2021 International Conference on Laser, Optics and Optoelectronic Technology(LOPET 2021)
Prof. Koichi Shimizu



Prof. Koichi Shimizu

Waseda University / Graduate School of Information, Production and Systems

Research Area: Biomedical Optics

Speech Title: Noninvasive measurement of physiological parameters inside living animal using NIR light scattering

Abstract: Near-infrared (NIR, 700-1200 nm wavelength) has relatively high transmission through an animal body. However, the light is strongly scattered in animal tissue that makes quantitative analysis difficult. We have developed some techniques to control and to suppress the scattering effect. Using these techniques, we can visualize the internal structure of animal bodies with the safe and convenient NIR light. This method has been applied to visualization of internal physiological functions and 3D trans-body imaging. Instead of suppressing the scattering, we can also utilize it for biomedical applications. As a result, we can now measure the blood turbidity from body surface without sticking a needle for blood sampling.


Koichi Shimizu received M.S.(1976) and Ph.D.(1979) degrees, from University of Washington (UW), Seattle, USA. He was Research Associate in UW 1974-79. He was an Assistant-, an Associate- Professors, and a Professor in Hokkaido University, Sapporo, Japan in 1979-2016. He is currently a Professor Emeritus of Hokkaido University and a Professor of Waseda University, Kitakyushu, Japan. He has been engaged in the studies of biomedical engineering including those of wave propagation in biological media, optical 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.