Affiliation: | (1) Department of Geriatric Medicine, Tohoku University School of Medicine, Sendai, Japan;(2) Miyama Hospital, Sendai, Japan;(3) Department of Psychology, Tohoku University School of Literature, Sendai, Japan;(4) Department of Radiology and Nuclear Medicine, The Research Institute for Tuberculosis and Cancer, Tohoku University, Sendai, Japan;(5) Cyclotron Radioisotope Center, Tohoku University School of Medicine, Sendai, Japan |