1. From the Departments of Radiology (Y.B., X.F., M.Z., J. Yu, H.Z., J.L., C.S.) and Pathology (H.J.), Changhai Hospital, 168 Changhai Road, Shanghai 200433, China; Ping An Technology, Shanghai, China (Z.Z.); and PAII Inc, Bethesda, Md (L.Z., J. Yao, L.L.).