1 Department of Radiology, Ghent University Hospital, Ghent, Belgium.
2 Department of Rheumatology, Ghent University Hospital, Ghent, Belgium.
3 Department of Rheumatology and VIB Inflammation Research Center, Unit for Molecular Immunology and Inflammation, Ghent University Hospital, Ghent, Belgium.
4 Department of Radiology and Nuclear Medicine, Erasmus University Medical Center, Rotterdam, The Netherlands.