1. Department of Physics of Molecular Imaging systems Institute for Experimental Molecular Imaging RWTH Aachen University Aachen Germany
2. Faculty of Civil Engineering RWTH Aachen University Aachen Germany
3. Philips Research Europe Eindhoven The Netherlands
4. Hyperion Hybrid Imaging Systems GmbH Aachen Germany
5. Physics Institute III B RWTH Aachen University Aachen Germany
6. Fraunhofer Institute for Digital Medicine MEVIS Bremen Germany
7. Center for Analysis Scientific Computing, and Applications Eindhoven University of Technology Eindhoven The Netherlands