[1] Univ Ulsan, Coll Med, Asan Med Ctr, Dept Radiol, Seoul 138736, South Korea
[2] Univ Ulsan, Coll Med, Asan Med Ctr, Res Inst Radiol, Seoul 138736, South Korea
[3] Arcispedale Santa Maria Nuova 42123, Div Endocrinol, Reggio Emilia, Italy
[4] Arcispedale Santa Maria Nuova 42123, Thyroid Dis Ctr, Reggio Emilia, Italy
[5] Osped Regina Apostolorum 00041, Diagnost Imaging & Intervent Radiol Dept, Albano Laziale Rome, Italy
[6] Sungkyunkwan Univ, Sch Med, Samsung Med Ctr, Dept Radiol, Seoul 135710, South Korea
[7] Sungkyunkwan Univ, Sch Med, Samsung Med Ctr, Ctr Imaging Sci, Seoul 135710, South Korea
[8] Human Med Imaging & Intervent Ctr, Dept Radiol, Seoul 137902, South Korea