1. Biomedical Laser and Optics Group, Department of Biomedical Engineering University of Basel Gewerbestrasse 14 Allschwil 4123 Switzerland
2. Department of Ultrasonic and Sensors Technologies, Information and Physical Technologies Institute ITEFI Spanish National Research Council (CSIC) Serrano 144 Madrid 28006 Spain
3. Brain Ischemia and Regeneration, Department of Biomedicine University of Basel, University Hospital of Basel Basel 4031 Switzerland
4. Neurosurgery Group, Department of Biomedical Engineering University of Basel Allschwil 4123 Switzerland
5. Department of Biomedical Engineering, Center for Medical Image Analysis and Navigation University of Basel Gewerbestrasse 14 Allschwil 4123 Switzerland