1. Department of Radiology, Friedrich-Alexander-University Erlangen-Nuremberg (FAU), Erlangen, Germany
2. Department of Radiology and Nuclear Medicine, Paracelsus Medical University Nuremberg, General Hospital Nuremberg, Germany
3. Department of Respiratory Medicine, Allergology and Sleep Medicine, Paracelsus Medical University Nuremberg, General Hospital Nuremberg, Germany
4. Institute of Medical Physics, General Hospital Nuremberg, Germany