1. Department of Medical Radiology; Division of Nuclear Medicine
2. Department of Medical Radiology; Clinic of Neuroradiology
3. Department of Radiology and Nuclear Medicine; Lucerne Cantonal Hospital; Lucerne
4. Department of Otolaryngology; Head and Neck Surgery, University Hospital Zurich; Zurich
5. Department of Otolaryngology-Head and Neck Surgery; Microvascular Reconstruction, University Hospital Basel; Basel Switzerland