1. Division of Radiology German Cancer Research Center (DKFZ) Heidelberg Germany
2. Multiple Myeloma Section, Department of Medicine V University Hospital Heidelberg Heidelberg Germany
3. National Center for Tumor Diseases (NCT) University Hospital Heidelberg Heidelberg Germany
4. Division of Biostatistics German Cancer Research Center (DKFZ) Heidelberg Germany
5. Institute of Radiology Friedrich‐Alexander‐University Erlangen‐Nuremberg (FAU) and University Hospital Erlangen Erlangen Germany
6. Division of Medical Physics in Radiology German Cancer Research Center (DKFZ) Heidelberg Germany
7. Department of Medicine Roswell Park Comprehensive Cancer Center Buffalo New York USA