1 Department of Radiology and Research Institute of Radiology, University of Ulsan College of Medicine, Asan Medical Center, Seoul, Korea. jieunp@gmail.com.
2 Department of Neuroradiology, University of Heidelberg, Heidelberg, Germany.
3 Department of Radiology and Research Institute of Radiology, University of Ulsan College of Medicine, Asan Medical Center, Seoul, Korea.
4 Department of Convergence Medicine, University of Ulsan College of Medicine, Asan Medical Center, Seoul, Korea.