1 Department of Diagnostic and Interventional Neuroradiology, RWTH Aachen University, 52074, Aachen, Germany. ahmed.e.othman@googlemail.com.
2 Department for Diagnostic and Interventional Radiology, Eberhard Karls University Tuebingen, University Hospital Tuebingen, Hoppe-Seyler-Straße 3, 72076, Tübingen, Germany. ahmed.e.othman@googlemail.com.
3 Department of Diagnostic and Interventional Neuroradiology, RWTH Aachen University, 52074, Aachen, Germany.
4 Department of Transdisciplinary Studies, Graduate School of Convergence Science and Technology, Seoul National University, Suwon, 433-270, South Korea.
5 Department of Radiology, Seoul National University College of Medicine, Seoul, 110-744, South Korea.
6 Center for Medical-IT Convergence Technology Research, Advanced Institute of Convergence Technology, Suwon, 433-270, South Korea.