. 2019 Aug 23;20(9):1381–1389. doi: 10.3348/kjr.2018.0814
Copyright © 2019 The Korean Society of Radiology
This is an Open Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/4.0/) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.