1. Department of RadiologyBeijing Tiantan Hospital, Capital Medical University Beijing China
2. School of Biomedical EngineeringCapital Medical University Beijing China
3. Department of RheumatologyPeking Union Medical College Hospital, Peking Union Medical College & Chinese Academy of Medical Science Beijing China
4. Key Laboratory of Rheumatology and Clinical ImmunologyMinistry of Education, National Clinical Research Center on Rheumatology, Ministry of Science & Technology Beijing China
5. Department of Imaging and Medical InformaticsUniversity Hospitals of Geneva and Faculty of Medicine of the University of Geneva Geneva Switzerland