Bárbara Trapp1, Charlie Chia-Tsong Hsu2, Jyoti Panwar1, Timo Krings1. 1. Division of Neuroradiology, University Health Network, Toronto Western Hospital, University of Toronto, Toronto, Canada. 2. Division of Neuroradiology, University Health Network, Toronto Western Hospital, University of Toronto, Toronto, Canada. charlie.ct.hsu@gmail.com.