1. Faculty of Electrical Engineering, Mathematics and Computer Science, University of Twente, 7522 NB Enschede, The Netherlands
2. Department of Radiology, University Medical Center Groningen, 9713 GZ Groningen, The Netherlands
3. Department of Radiology, Affiliated Hospital of Nanjing University of Chinese Medicine, Nanjing 210023, China
4. Faculty of Medical Sciences, University of Groningen, 9712 CP Groningen, The Netherlands
5. Department of Information Security and Communication Technology, Norwegian University of Science and Technology, 7034 Trondheim, Norway