1. Karlsruhe Institute of Technology (KIT), Institute for Inorganic Chemistry, Engesserstrasse 15, 76131 Karlsruhe, Germany
2. University Medical Center Goettingen (UMG), Institute for Diagnostic and Interventional Radiology, Robert Koch Str. 40, 37075 Goettingen, Germany
3. Max Planck Institute for Multidisciplinary Sciences, Translational Molecular Imaging, Hermann-Rein-Strasse 3, 37075 Goettingen, Germany
4. University Medical Center Goettingen (UMG), Clinic for Haematology and Medical Oncology, Robert Koch Str. 40, 37075 Goettingen, Germany