title: Reply to the Letter.
authors.affiliation: Department of Radiology, Soonchunhyang University Bucheon Hospital, 170 Jomaru-ro, Wonmi-gu, Bucheon-si, Gyeonggi-do, 420-767, Bucheon, Republic of Korea.
authors.forename: H
authors.initials: H
authors.lastname: Kim
authors.affiliation: Department of Radiology, Soonchunhyang University Bucheon Hospital, 170 Jomaru-ro, Wonmi-gu, Bucheon-si, Gyeonggi-do, 420-767, Bucheon, Republic of Korea. hshong@schmc.ac.kr.
authors.forename: H S
authors.initials: HS
authors.lastname: Hong