Progression of Vertebral Artery Dissection: Vessel Wall Enhancement and Aneurysm Dilation. (18th July 2016) - Lee, Song; Choi, Hyun Seok; Jang, Jinhee; Jung, So Lyung; Ahn, Kook-Jin; Kim, Bum-soo; Koo, Jaseong; Shin, Yong Sam