T Beyer1, R J Hicks2, L S Freudenberg3. 1. QIMP Group, Centre Medical Physics and Biomedical Engineering, Medical University Vienna, Währinger Str 18-20/4L, 1090, Vienna, Austria. thomas.beyer@meduniwien.ac.at. 2. The Sir Peter MacCallum Department of Oncology, The University of Melbourne, Melbourne, 3000, Australia. 3. ZRN Rheinland, Ueberseite 88, 41352, Korschenbroich, Germany.