1. Division of X‐Ray Imaging and CT German Cancer Research Center (DKFZ) Heidelberg Germany
2. Department of Physics and Astronomy Ruprecht‐Karls‐University Heidelberg Heidelberg Germany
3. Pattern Recognition Lab Friedrich‐Alexander University Erlangen‐Nürnberg Erlangen Germany
4. Medical Faculty Ruprecht‐Karls‐University Heidelberg Heidelberg Germany
5. Department of Radiology and Nuclear Medicine Klinikum Nürnberg Paracelsus Medical University Nürnberg Germany