作者单位:Univ Ulsan, Asan Med Ctr, Dept Radiol, Coll Med, 88 Olymp Ro 43 Gil, Seoul 05505, South Korea[1]Asan Med Ctr, Biomed Res Ctr, Bioimaging Ctr, Asan Inst Life Sci, Seoul, South Korea[2]MFDS, Clin Res Div, Natl Inst Food & Drug Safety Evaluat, Cheongju, South Korea[3]