1. Institute of Applied Medical Engineering, Helmholtz Institute, RWTH Aachen University, Aachen, Germany
2. Institute of Materials in Electrical Engineering 1, RWTH Aachen University, Aachen, Germany
3. Sensortechnics GmbH, , Puchheim, Germany
4. Fraunhofer Institute of Microelectronic Circuits and Systems, Duisburg, Germany
5. Osypka AG, Rheinfelden, Germany
6. Department of Diagnostic and Interventional Radiology, RWTH Aachen University Hospital, Aachen, Germany