Yasuhito Sasaki M.D. Ph.D. Fellow SNMMI was born in1937 in Tokyo Japan, graduated from School of Medicine the University of Tokyo in 1963. He is now directing Radiological Research Division, Shonan Research Institute of Innovative Medicine of Shonan Kamakura General Hospital in Japan, which is affiliated to Graduate School of Medicine, Yokohama City University. He also serves as Consultant for Radiation Effects Association.

Dr. Sasaki was trained as internist and specialized in Nuclear Medicine at the University of Tokyo and Johns Hopkins Hospital in Baltimore, U.S.A. In his professional career of 60 years as Nuclear Medicine Physician Dr. Sasaki has chaired departments of Radiology and Nuclear Medicine at several universities including Gunma University and the University of Tokyo. Later he has served as Director General of National Institute of Radiological Sciences. Dr. Sasaki has severed to ICRP, UNSCEAR and Radiation Council of Japan. He has contributed to the promotion of Nuclear Medicine in Japan, Asia and the World. He received Presidential Distinguished Service Award from the Society of Nuclear Medicine in 2000 for his contribution to the collaborative activities of SNM and JSNM in addition to other distinguished honors and awards including The Order of the Sacred Treasure Gold and Silver Star decorated by  Emperor Akihito (2007), Honorable Recognition of Contributor to Disaster Prevention by the Prime Minister Yasuo Fukuda (2008) and the 13^th Nagasaki Dr. Nagai Peace Memorial Prize Award (2021).