Article

The development of the EULAR–OMERACT rheumatoid arthritis MRI reference image atlas

P Bird¹, P Conaghan², B Ejbjerg³, F McQueen⁴, M Lassere⁵, C Peterfy⁶, J Edmonds⁷, R Shnier⁸, P O’Connor⁹, E A Haavardsholm¹⁰, P Emery¹¹, H Genant¹², M Østergaard¹³

¹ Department of Rheumatology, St George Hospital, University of NSW, Sydney, Australia
² Academic Unit of Musculoskeletal Disease, University of Leeds, Leeds, UK
³ Departments of Rheumatology, Radiology, and MRI, Copenhagen University Hospital at Hvidovre, Copenhagen, Denmark
⁴ Department of Molecular Medicine and Pathology, Faculty of Medicine and Health Sciences, University of Auckland, Auckland, New Zealand
⁵ Department of Rheumatology, St George Hospital, University of NSW, Sydney, Australia
⁶ Synarc Inc, San Francisco, CA, USA
⁷ Department of Rheumatology, St George Hospital, University of NSW, Sydney, Australia
⁸ Department of Diagnostic Imaging, Mayne Nickless, Sydney, Australia
⁹ Department of Radiology, Leeds General Infirmary, Leeds, UK
¹⁰ Department of Rheumatology, Diakonhjemmet Hospital, University of Oslo, Oslo, Norway
¹¹ Academic Unit of Musculoskeletal Disease, University of Leeds, Leeds, UK
¹² Department of Radiology, University of California at San Francisco, San Francisco, CA, USA
¹³ Departments of Rheumatology, Copenhagen University Hospitals at Herlev and Hvidovre, Copenhagen, Denmark

Correspondence to:
Correspondence to:
Prof M Østergaard
Department of Rheumatology, Copenhagen University Hospital at Hvidovre, Kettegaard alle 30, DK-2650 Hvidovre, Denmark; mo{at}dadlnet.dk

Based on a previously developed rheumatoid arthritis MRI scoring system (OMERACT 2002 RAMRIS), the development team agreed which joints, MRI features, MRI sequences, and image planes would best illustrate the scoring system in an atlas. After collecting representative examples for all grades for each abnormality (synovitis, bone oedema, and bone erosion), the team met for a three day period to review the images and choose by consensus the most illustrative set for each feature, site, and grade. A predefined subset of images (for example, for erosion—all coronal slices through the bone) was extracted. These images were then re-read by the group at a different time point to confirm the scores originally assigned. Finally, all selected images were photographed and formatted by one centre and distributed to all readers for final approval.

Abbreviations: EULAR, European League Against Rheumatism; MCP, metacarpophalangeal (joint); MRI, magnetic resonance imaging; RA, rheumatoid arthritis

Keywords: EULAR; magnetic resonance imaging; OMERACT; arthritis; rheumatoid arthritis

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