1 Department of Radiology, University Hospital Tulln, Karl Landsteiner University of Health Sciences, Alter Ziegelweg 10, A, 3430, Tulln, Austria. christian.nasel@meduniwien.ac.at.
2 Department of Medical Imaging and Image -guided Therapy, Medical University of Vienna, Vienna, Austria. christian.nasel@meduniwien.ac.at.
3 Center for Medical Physics and Biomedical Engineering, Medical University of Vienna, Vienna, Austria. christian.nasel@meduniwien.ac.at.
4 Department of Radiology, University Hospital Tulln, Karl Landsteiner University of Health Sciences, Alter Ziegelweg 10, A, 3430, Tulln, Austria.
5 Department of Neurology, University Hospital Tulln, Karl Landsteiner University of Health Sciences, Tulln, Austria.
6 Center for Medical Physics and Biomedical Engineering, Medical University of Vienna, Vienna, Austria.