Affiliation: | (1) Department of Radiology, Sendai City Hospital, Sendai, Japan, JP;(2) Department of Orthopedics, Sendai City Hospital, Sendai, Japan, JP;(3) Department of Pathology, Sendai City Hospital, Sendai, Japan, JP;(4) Department of Radiology, Akita Research Institute of Brain and Blood Vessels, 6–10 Senshu-Kubota Machi, Akita 010, Japan, JP |