1. Department of Oto-Rhino-Laryngology, Plastic, Aesthetic and Reconstructive Head and Neck Surgery and the Comprehensive Hearing Center, University of Würzburg, Würzburg, Germany
2. Department of Diagnostic and Interventional Neuroradiology, University of Würzburg, Würzburg, Germany
3. Department of X-ray Microscopy, University of Würzburg, Würzburg, Germany
4. Fraunhofer Development Center for X-ray Technology, Würzburg, Germany