1. Division of Radiology and Nuclear Medicine Kantonsspital St. Gallen St. Gallen CH‐9007 Switzerland
2. Faculty of Medicine University of Zurich Zurich CH‐8091 Switzerland
3. Department of Orthopaedics and Traumatology Kantonsspital St. Gallen St. Gallen Switzerland
4. Clinical Trials Unit Kantonsspital St. Gallen St. Gallen Switzerland