Affiliation: | 1. Musculoskeletal and Quantitative Imaging Research, Department of Radiology and Biomedical Imaging, University of California, San Francisco, San Francisco, California, USA;2. Department of Diagnostic and Interventional Radiology, Technische Universit?t München, Munich, Germany;3. Department of Orthopaedic Surgery, University of California, San Francisco, San Francisco, California, USA;4. Department of Radiology, University of Brescia, Brescia, Italy |