title: The OMERACT MRI in Arthritis Working Group - Update on Status and Future Research Priorities.
abstract: OBJECTIVE
  To provide an update on the status and future research priorities of the Outcome Measures in Rheumatology (OMERACT) magnetic resonance imaging (MRI) in arthritis working group.
  
  
  METHODS
  A summary is provided of the activities of the group within rheumatoid arthritis (RA), psoriatic arthritis (PsA), and osteoarthritis (OA), and its research priorities.
  
  
  RESULTS
  The OMERACT RA MRI score (RAMRIS) evaluating bone erosion, bone edema (osteitis), and synovitis is now the standard method of quantifying articular pathology in RA trials. Cartilage loss is another important part of joint damage, and at the OMERACT 12 conference, we provided longitudinal data demonstrating reliability and sensitivity to change of the RAMRIS JSN component score, supporting its use in future clinical trials. The MRI group has previously developed a PsA MRI score (PsAMRIS). At OMERACT 12, PsAMRIS was evaluated in a randomized placebo-controlled trial of patients with PsA, demonstrating the responsiveness and discriminatory ability of applying the PsAMRIS to hands and feet. A hand OA MRI score (HOAMRIS) was introduced at OMERACT 11, and has subsequently been further validated. At OMERACT 12, good cross-sectional interreader reliability, but variable reliability of change scores, were reported. Potential future research areas were identified at the MRI session at OMERACT 12 including assessment of tenosynovitis in RA and enthesitis in PsA and focusing on alternative MRI techniques.
  
  
  CONCLUSIONS
  MRI has been further developed and validated as an outcome measure in RA, PsA, and OA. The group will continue its efforts to optimize the value of MRI as a robust biomarker in rheumatology clinical trials.
authors: From the Copenhagen Center for Arthritis Research, Center for Rheumatology and Spine Diseases, Glostrup Hospital, Copenhagen, Denmark; Department of Clinical Medicine, University of Copenhagen, Copenhagen, Denmark; University of New South Wales, Sydney, Australia; Department of Rheumatology, Pitié-Salpêtrière Hospital, APHP, Université Paris 6-UPMC, Paris, France; Sheba Medical Center, Tel Aviv University, Tel Aviv, Israel; Department of Rheumatology, Diakonhjemmet Hospital, Oslo, Norway; Spire Sciences, Boca Raton, Florida, USA; Department of Rheumatology, Slagelse Hospital, Slagelse, Denmark; Division of Rheumatology Research, Swedish Medical Center, University of Washington School of Medicine; and Seattle Rheumatology Associates, Seattle, Washington, USA; Department of Radiology, Charité University Hospital, Berlin, Germany; Institute of Rheumatic and Musculoskeletal Medicine, University of Leeds; National Institute for Health Research (NIHR) Leeds Musculoskeletal Biomedical Research Unit, Leeds, UK; University of California, San Francisco, and Synarc Inc., San Francisco, California, USA. M. Østergaard, MD, PhD, DMSc, Professor of Rheumatology, Copenhagen Center for Arthritis Research, Center for Rheumatology and Spine Diseases, Glostrup Hospital and Department of Clinical Medicine, University of Copenhagen; P. Bird, BMed (Hons), FRACP, PhD, Grad Dip MRI, Senior Lecturer, University of NSW; F. Gandjbakhch, MD, Practicing Rheumatologist, Department of Rheumatology, Pitié-Salpêtrière, APHP, Université Paris 6-UPMC; I. Eshed, MD, Professor of Radiology, Sheba Medical Center, Tel Aviv University; I.K. Haugen, MD, PhD, Postdoctoral Researcher, Department of Rheumatology, Diakonhjemmet Hospital; E.A. Haavardsholm, MD, PhD, Postdoctoral Researcher, Department of Rheumatology, Diakonhjemmet Hospital; S. Lillegraven, MD, PhD, Postdoctoral Researcher, Department of Rheumatology, Diakonhjemmet Hospital, University of Oslo; V. Foltz, MD, Practicing Rheumatologist, 
authors: Mikkel
authors: M
authors: Østergaard
authors: From the Copenhagen Center for Arthritis Research, Center for Rheumatology and Spine Diseases, Glostrup Hospital, Copenhagen, Denmark; Department of Clinical Medicine, University of Copenhagen, Copenhagen, Denmark; University of New South Wales, Sydney, Australia; Department of Rheumatology, Pitié-Salpêtrière Hospital, APHP, Université Paris 6-UPMC, Paris, France; Sheba Medical Center, Tel Aviv University, Tel Aviv, Israel; Department of Rheumatology, Diakonhjemmet Hospital, Oslo, Norway; Spire Sciences, Boca Raton, Florida, USA; Department of Rheumatology, Slagelse Hospital, Slagelse, Denmark; Division of Rheumatology Research, Swedish Medical Center, University of Washington School of Medicine; and Seattle Rheumatology Associates, Seattle, Washington, USA; Department of Radiology, Charité University Hospital, Berlin, Germany; Institute of Rheumatic and Musculoskeletal Medicine, University of Leeds; National Institute for Health Research (NIHR) Leeds Musculoskeletal Biomedical Research Unit, Leeds, UK; University of California, San Francisco, and Synarc Inc., San Francisco, California, USA. M. Østergaard, MD, PhD, DMSc, Professor of Rheumatology, Copenhagen Center for Arthritis Research, Center for Rheumatology and Spine Diseases, Glostrup Hospital and Department of Clinical Medicine, University of Copenhagen; P. Bird, BMed (Hons), FRACP, PhD, Grad Dip MRI, Senior Lecturer, University of NSW; F. Gandjbakhch, MD, Practicing Rheumatologist, Department of Rheumatology, Pitié-Salpêtrière, APHP, Université Paris 6-UPMC; I. Eshed, MD, Professor of Radiology, Sheba Medical Center, Tel Aviv University; I.K. Haugen, MD, PhD, Postdoctoral Researcher, Department of Rheumatology, Diakonhjemmet Hospital; E.A. Haavardsholm, MD, PhD, Postdoctoral Researcher, Department of Rheumatology, Diakonhjemmet Hospital; S. Lillegraven, MD, PhD, Postdoctoral Researcher, Department of Rheumatology, Diakonhjemmet Hospital, University of Oslo; V. Foltz, MD, Practicing Rheumatologist, 
authors: Paul
authors: P
authors: Bird
authors: From the Copenhagen Center for Arthritis Research, Center for Rheumatology and Spine Diseases, Glostrup Hospital, Copenhagen, Denmark; Department of Clinical Medicine, University of Copenhagen, Copenhagen, Denmark; University of New South Wales, Sydney, Australia; Department of Rheumatology, Pitié-Salpêtrière Hospital, APHP, Université Paris 6-UPMC, Paris, France; Sheba Medical Center, Tel Aviv University, Tel Aviv, Israel; Department of Rheumatology, Diakonhjemmet Hospital, Oslo, Norway; Spire Sciences, Boca Raton, Florida, USA; Department of Rheumatology, Slagelse Hospital, Slagelse, Denmark; Division of Rheumatology Research, Swedish Medical Center, University of Washington School of Medicine; and Seattle Rheumatology Associates, Seattle, Washington, USA; Department of Radiology, Charité University Hospital, Berlin, Germany; Institute of Rheumatic and Musculoskeletal Medicine, University of Leeds; National Institute for Health Research (NIHR) Leeds Musculoskeletal Biomedical Research Unit, Leeds, UK; University of California, San Francisco, and Synarc Inc., San Francisco, California, USA. M. Østergaard, MD, PhD, DMSc, Professor of Rheumatology, Copenhagen Center for Arthritis Research, Center for Rheumatology and Spine Diseases, Glostrup Hospital and Department of Clinical Medicine, University of Copenhagen; P. Bird, BMed (Hons), FRACP, PhD, Grad Dip MRI, Senior Lecturer, University of NSW; F. Gandjbakhch, MD, Practicing Rheumatologist, Department of Rheumatology, Pitié-Salpêtrière, APHP, Université Paris 6-UPMC; I. Eshed, MD, Professor of Radiology, Sheba Medical Center, Tel Aviv University; I.K. Haugen, MD, PhD, Postdoctoral Researcher, Department of Rheumatology, Diakonhjemmet Hospital; E.A. Haavardsholm, MD, PhD, Postdoctoral Researcher, Department of Rheumatology, Diakonhjemmet Hospital; S. Lillegraven, MD, PhD, Postdoctoral Researcher, Department of Rheumatology, Diakonhjemmet Hospital, University of Oslo; V. Foltz, MD, Practicing Rheumatologist, 
authors: Frédérique
authors: F
authors: Gandjbakhch
authors: From the Copenhagen Center for Arthritis Research, Center for Rheumatology and Spine Diseases, Glostrup Hospital, Copenhagen, Denmark; Department of Clinical Medicine, University of Copenhagen, Copenhagen, Denmark; University of New South Wales, Sydney, Australia; Department of Rheumatology, Pitié-Salpêtrière Hospital, APHP, Université Paris 6-UPMC, Paris, France; Sheba Medical Center, Tel Aviv University, Tel Aviv, Israel; Department of Rheumatology, Diakonhjemmet Hospital, Oslo, Norway; Spire Sciences, Boca Raton, Florida, USA; Department of Rheumatology, Slagelse Hospital, Slagelse, Denmark; Division of Rheumatology Research, Swedish Medical Center, University of Washington School of Medicine; and Seattle Rheumatology Associates, Seattle, Washington, USA; Department of Radiology, Charité University Hospital, Berlin, Germany; Institute of Rheumatic and Musculoskeletal Medicine, University of Leeds; National Institute for Health Research (NIHR) Leeds Musculoskeletal Biomedical Research Unit, Leeds, UK; University of California, San Francisco, and Synarc Inc., San Francisco, California, USA. M. Østergaard, MD, PhD, DMSc, Professor of Rheumatology, Copenhagen Center for Arthritis Research, Center for Rheumatology and Spine Diseases, Glostrup Hospital and Department of Clinical Medicine, University of Copenhagen; P. Bird, BMed (Hons), FRACP, PhD, Grad Dip MRI, Senior Lecturer, University of NSW; F. Gandjbakhch, MD, Practicing Rheumatologist, Department of Rheumatology, Pitié-Salpêtrière, APHP, Université Paris 6-UPMC; I. Eshed, MD, Professor of Radiology, Sheba Medical Center, Tel Aviv University; I.K. Haugen, MD, PhD, Postdoctoral Researcher, Department of Rheumatology, Diakonhjemmet Hospital; E.A. Haavardsholm, MD, PhD, Postdoctoral Researcher, Department of Rheumatology, Diakonhjemmet Hospital; S. Lillegraven, MD, PhD, Postdoctoral Researcher, Department of Rheumatology, Diakonhjemmet Hospital, University of Oslo; V. Foltz, MD, Practicing Rheumatologist, 
authors: Iris
authors: I
authors: Eshed
authors: From the Copenhagen Center for Arthritis Research, Center for Rheumatology and Spine Diseases, Glostrup Hospital, Copenhagen, Denmark; Department of Clinical Medicine, University of Copenhagen, Copenhagen, Denmark; University of New South Wales, Sydney, Australia; Department of Rheumatology, Pitié-Salpêtrière Hospital, APHP, Université Paris 6-UPMC, Paris, France; Sheba Medical Center, Tel Aviv University, Tel Aviv, Israel; Department of Rheumatology, Diakonhjemmet Hospital, Oslo, Norway; Spire Sciences, Boca Raton, Florida, USA; Department of Rheumatology, Slagelse Hospital, Slagelse, Denmark; Division of Rheumatology Research, Swedish Medical Center, University of Washington School of Medicine; and Seattle Rheumatology Associates, Seattle, Washington, USA; Department of Radiology, Charité University Hospital, Berlin, Germany; Institute of Rheumatic and Musculoskeletal Medicine, University of Leeds; National Institute for Health Research (NIHR) Leeds Musculoskeletal Biomedical Research Unit, Leeds, UK; University of California, San Francisco, and Synarc Inc., San Francisco, California, USA. M. Østergaard, MD, PhD, DMSc, Professor of Rheumatology, Copenhagen Center for Arthritis Research, Center for Rheumatology and Spine Diseases, Glostrup Hospital and Department of Clinical Medicine, University of Copenhagen; P. Bird, BMed (Hons), FRACP, PhD, Grad Dip MRI, Senior Lecturer, University of NSW; F. Gandjbakhch, MD, Practicing Rheumatologist, Department of Rheumatology, Pitié-Salpêtrière, APHP, Université Paris 6-UPMC; I. Eshed, MD, Professor of Radiology, Sheba Medical Center, Tel Aviv University; I.K. Haugen, MD, PhD, Postdoctoral Researcher, Department of Rheumatology, Diakonhjemmet Hospital; E.A. Haavardsholm, MD, PhD, Postdoctoral Researcher, Department of Rheumatology, Diakonhjemmet Hospital; S. Lillegraven, MD, PhD, Postdoctoral Researcher, Department of Rheumatology, Diakonhjemmet Hospital, University of Oslo; V. Foltz, MD, Practicing Rheumatologist, 
authors: Ida K
authors: IK
authors: Haugen
authors: From the Copenhagen Center for Arthritis Research, Center for Rheumatology and Spine Diseases, Glostrup Hospital, Copenhagen, Denmark; Department of Clinical Medicine, University of Copenhagen, Copenhagen, Denmark; University of New South Wales, Sydney, Australia; Department of Rheumatology, Pitié-Salpêtrière Hospital, APHP, Université Paris 6-UPMC, Paris, France; Sheba Medical Center, Tel Aviv University, Tel Aviv, Israel; Department of Rheumatology, Diakonhjemmet Hospital, Oslo, Norway; Spire Sciences, Boca Raton, Florida, USA; Department of Rheumatology, Slagelse Hospital, Slagelse, Denmark; Division of Rheumatology Research, Swedish Medical Center, University of Washington School of Medicine; and Seattle Rheumatology Associates, Seattle, Washington, USA; Department of Radiology, Charité University Hospital, Berlin, Germany; Institute of Rheumatic and Musculoskeletal Medicine, University of Leeds; National Institute for Health Research (NIHR) Leeds Musculoskeletal Biomedical Research Unit, Leeds, UK; University of California, San Francisco, and Synarc Inc., San Francisco, California, USA. M. Østergaard, MD, PhD, DMSc, Professor of Rheumatology, Copenhagen Center for Arthritis Research, Center for Rheumatology and Spine Diseases, Glostrup Hospital and Department of Clinical Medicine, University of Copenhagen; P. Bird, BMed (Hons), FRACP, PhD, Grad Dip MRI, Senior Lecturer, University of NSW; F. Gandjbakhch, MD, Practicing Rheumatologist, Department of Rheumatology, Pitié-Salpêtrière, APHP, Université Paris 6-UPMC; I. Eshed, MD, Professor of Radiology, Sheba Medical Center, Tel Aviv University; I.K. Haugen, MD, PhD, Postdoctoral Researcher, Department of Rheumatology, Diakonhjemmet Hospital; E.A. Haavardsholm, MD, PhD, Postdoctoral Researcher, Department of Rheumatology, Diakonhjemmet Hospital; S. Lillegraven, MD, PhD, Postdoctoral Researcher, Department of Rheumatology, Diakonhjemmet Hospital, University of Oslo; V. Foltz, MD, Practicing Rheumatologist, 
authors: Espen A
authors: EA
authors: Haavardsholm
authors: From the Copenhagen Center for Arthritis Research, Center for Rheumatology and Spine Diseases, Glostrup Hospital, Copenhagen, Denmark; Department of Clinical Medicine, University of Copenhagen, Copenhagen, Denmark; University of New South Wales, Sydney, Australia; Department of Rheumatology, Pitié-Salpêtrière Hospital, APHP, Université Paris 6-UPMC, Paris, France; Sheba Medical Center, Tel Aviv University, Tel Aviv, Israel; Department of Rheumatology, Diakonhjemmet Hospital, Oslo, Norway; Spire Sciences, Boca Raton, Florida, USA; Department of Rheumatology, Slagelse Hospital, Slagelse, Denmark; Division of Rheumatology Research, Swedish Medical Center, University of Washington School of Medicine; and Seattle Rheumatology Associates, Seattle, Washington, USA; Department of Radiology, Charité University Hospital, Berlin, Germany; Institute of Rheumatic and Musculoskeletal Medicine, University of Leeds; National Institute for Health Research (NIHR) Leeds Musculoskeletal Biomedical Research Unit, Leeds, UK; University of California, San Francisco, and Synarc Inc., San Francisco, California, USA. M. Østergaard, MD, PhD, DMSc, Professor of Rheumatology, Copenhagen Center for Arthritis Research, Center for Rheumatology and Spine Diseases, Glostrup Hospital and Department of Clinical Medicine, University of Copenhagen; P. Bird, BMed (Hons), FRACP, PhD, Grad Dip MRI, Senior Lecturer, University of NSW; F. Gandjbakhch, MD, Practicing Rheumatologist, Department of Rheumatology, Pitié-Salpêtrière, APHP, Université Paris 6-UPMC; I. Eshed, MD, Professor of Radiology, Sheba Medical Center, Tel Aviv University; I.K. Haugen, MD, PhD, Postdoctoral Researcher, Department of Rheumatology, Diakonhjemmet Hospital; E.A. Haavardsholm, MD, PhD, Postdoctoral Researcher, Department of Rheumatology, Diakonhjemmet Hospital; S. Lillegraven, MD, PhD, Postdoctoral Researcher, Department of Rheumatology, Diakonhjemmet Hospital, University of Oslo; V. Foltz, MD, Practicing Rheumatologist, 
authors: Siri
authors: S
authors: Lillegraven
authors: From the Copenhagen Center for Arthritis Research, Center for Rheumatology and Spine Diseases, Glostrup Hospital, Copenhagen, Denmark; Department of Clinical Medicine, University of Copenhagen, Copenhagen, Denmark; University of New South Wales, Sydney, Australia; Department of Rheumatology, Pitié-Salpêtrière Hospital, APHP, Université Paris 6-UPMC, Paris, France; Sheba Medical Center, Tel Aviv University, Tel Aviv, Israel; Department of Rheumatology, Diakonhjemmet Hospital, Oslo, Norway; Spire Sciences, Boca Raton, Florida, USA; Department of Rheumatology, Slagelse Hospital, Slagelse, Denmark; Division of Rheumatology Research, Swedish Medical Center, University of Washington School of Medicine; and Seattle Rheumatology Associates, Seattle, Washington, USA; Department of Radiology, Charité University Hospital, Berlin, Germany; Institute of Rheumatic and Musculoskeletal Medicine, University of Leeds; National Institute for Health Research (NIHR) Leeds Musculoskeletal Biomedical Research Unit, Leeds, UK; University of California, San Francisco, and Synarc Inc., San Francisco, California, USA. M. Østergaard, MD, PhD, DMSc, Professor of Rheumatology, Copenhagen Center for Arthritis Research, Center for Rheumatology and Spine Diseases, Glostrup Hospital and Department of Clinical Medicine, University of Copenhagen; P. Bird, BMed (Hons), FRACP, PhD, Grad Dip MRI, Senior Lecturer, University of NSW; F. Gandjbakhch, MD, Practicing Rheumatologist, Department of Rheumatology, Pitié-Salpêtrière, APHP, Université Paris 6-UPMC; I. Eshed, MD, Professor of Radiology, Sheba Medical Center, Tel Aviv University; I.K. Haugen, MD, PhD, Postdoctoral Researcher, Department of Rheumatology, Diakonhjemmet Hospital; E.A. Haavardsholm, MD, PhD, Postdoctoral Researcher, Department of Rheumatology, Diakonhjemmet Hospital; S. Lillegraven, MD, PhD, Postdoctoral Researcher, Department of Rheumatology, Diakonhjemmet Hospital, University of Oslo; V. Foltz, MD, Practicing Rheumatologist, 
authors: Violaine
authors: V
authors: Foltz
authors: From the Copenhagen Center for Arthritis Research, Center for Rheumatology and Spine Diseases, Glostrup Hospital, Copenhagen, Denmark; Department of Clinical Medicine, University of Copenhagen, Copenhagen, Denmark; University of New South Wales, Sydney, Australia; Department of Rheumatology, Pitié-Salpêtrière Hospital, APHP, Université Paris 6-UPMC, Paris, France; Sheba Medical Center, Tel Aviv University, Tel Aviv, Israel; Department of Rheumatology, Diakonhjemmet Hospital, Oslo, Norway; Spire Sciences, Boca Raton, Florida, USA; Department of Rheumatology, Slagelse Hospital, Slagelse, Denmark; Division of Rheumatology Research, Swedish Medical Center, University of Washington School of Medicine; and Seattle Rheumatology Associates, Seattle, Washington, USA; Department of Radiology, Charité University Hospital, Berlin, Germany; Institute of Rheumatic and Musculoskeletal Medicine, University of Leeds; National Institute for Health Research (NIHR) Leeds Musculoskeletal Biomedical Research Unit, Leeds, UK; University of California, San Francisco, and Synarc Inc., San Francisco, California, USA. M. Østergaard, MD, PhD, DMSc, Professor of Rheumatology, Copenhagen Center for Arthritis Research, Center for Rheumatology and Spine Diseases, Glostrup Hospital and Department of Clinical Medicine, University of Copenhagen; P. Bird, BMed (Hons), FRACP, PhD, Grad Dip MRI, Senior Lecturer, University of NSW; F. Gandjbakhch, MD, Practicing Rheumatologist, Department of Rheumatology, Pitié-Salpêtrière, APHP, Université Paris 6-UPMC; I. Eshed, MD, Professor of Radiology, Sheba Medical Center, Tel Aviv University; I.K. Haugen, MD, PhD, Postdoctoral Researcher, Department of Rheumatology, Diakonhjemmet Hospital; E.A. Haavardsholm, MD, PhD, Postdoctoral Researcher, Department of Rheumatology, Diakonhjemmet Hospital; S. Lillegraven, MD, PhD, Postdoctoral Researcher, Department of Rheumatology, Diakonhjemmet Hospital, University of Oslo; V. Foltz, MD, Practicing Rheumatologist, 
authors: Daniel
authors: D
authors: Glinatsi
authors: From the Copenhagen Center for Arthritis Research, Center for Rheumatology and Spine Diseases, Glostrup Hospital, Copenhagen, Denmark; Department of Clinical Medicine, University of Copenhagen, Copenhagen, Denmark; University of New South Wales, Sydney, Australia; Department of Rheumatology, Pitié-Salpêtrière Hospital, APHP, Université Paris 6-UPMC, Paris, France; Sheba Medical Center, Tel Aviv University, Tel Aviv, Israel; Department of Rheumatology, Diakonhjemmet Hospital, Oslo, Norway; Spire Sciences, Boca Raton, Florida, USA; Department of Rheumatology, Slagelse Hospital, Slagelse, Denmark; Division of Rheumatology Research, Swedish Medical Center, University of Washington School of Medicine; and Seattle Rheumatology Associates, Seattle, Washington, USA; Department of Radiology, Charité University Hospital, Berlin, Germany; Institute of Rheumatic and Musculoskeletal Medicine, University of Leeds; National Institute for Health Research (NIHR) Leeds Musculoskeletal Biomedical Research Unit, Leeds, UK; University of California, San Francisco, and Synarc Inc., San Francisco, California, USA. M. Østergaard, MD, PhD, DMSc, Professor of Rheumatology, Copenhagen Center for Arthritis Research, Center for Rheumatology and Spine Diseases, Glostrup Hospital and Department of Clinical Medicine, University of Copenhagen; P. Bird, BMed (Hons), FRACP, PhD, Grad Dip MRI, Senior Lecturer, University of NSW; F. Gandjbakhch, MD, Practicing Rheumatologist, Department of Rheumatology, Pitié-Salpêtrière, APHP, Université Paris 6-UPMC; I. Eshed, MD, Professor of Radiology, Sheba Medical Center, Tel Aviv University; I.K. Haugen, MD, PhD, Postdoctoral Researcher, Department of Rheumatology, Diakonhjemmet Hospital; E.A. Haavardsholm, MD, PhD, Postdoctoral Researcher, Department of Rheumatology, Diakonhjemmet Hospital; S. Lillegraven, MD, PhD, Postdoctoral Researcher, Department of Rheumatology, Diakonhjemmet Hospital, University of Oslo; V. Foltz, MD, Practicing Rheumatologist, 
authors: Charles
authors: C
authors: Peterfy
authors: From the Copenhagen Center for Arthritis Research, Center for Rheumatology and Spine Diseases, Glostrup Hospital, Copenhagen, Denmark; Department of Clinical Medicine, University of Copenhagen, Copenhagen, Denmark; University of New South Wales, Sydney, Australia; Department of Rheumatology, Pitié-Salpêtrière Hospital, APHP, Université Paris 6-UPMC, Paris, France; Sheba Medical Center, Tel Aviv University, Tel Aviv, Israel; Department of Rheumatology, Diakonhjemmet Hospital, Oslo, Norway; Spire Sciences, Boca Raton, Florida, USA; Department of Rheumatology, Slagelse Hospital, Slagelse, Denmark; Division of Rheumatology Research, Swedish Medical Center, University of Washington School of Medicine; and Seattle Rheumatology Associates, Seattle, Washington, USA; Department of Radiology, Charité University Hospital, Berlin, Germany; Institute of Rheumatic and Musculoskeletal Medicine, University of Leeds; National Institute for Health Research (NIHR) Leeds Musculoskeletal Biomedical Research Unit, Leeds, UK; University of California, San Francisco, and Synarc Inc., San Francisco, California, USA. M. Østergaard, MD, PhD, DMSc, Professor of Rheumatology, Copenhagen Center for Arthritis Research, Center for Rheumatology and Spine Diseases, Glostrup Hospital and Department of Clinical Medicine, University of Copenhagen; P. Bird, BMed (Hons), FRACP, PhD, Grad Dip MRI, Senior Lecturer, University of NSW; F. Gandjbakhch, MD, Practicing Rheumatologist, Department of Rheumatology, Pitié-Salpêtrière, APHP, Université Paris 6-UPMC; I. Eshed, MD, Professor of Radiology, Sheba Medical Center, Tel Aviv University; I.K. Haugen, MD, PhD, Postdoctoral Researcher, Department of Rheumatology, Diakonhjemmet Hospital; E.A. Haavardsholm, MD, PhD, Postdoctoral Researcher, Department of Rheumatology, Diakonhjemmet Hospital; S. Lillegraven, MD, PhD, Postdoctoral Researcher, Department of Rheumatology, Diakonhjemmet Hospital, University of Oslo; V. Foltz, MD, Practicing Rheumatologist, 
authors: Bo
authors: B
authors: Ejbjerg
authors: From the Copenhagen Center for Arthritis Research, Center for Rheumatology and Spine Diseases, Glostrup Hospital, Copenhagen, Denmark; Department of Clinical Medicine, University of Copenhagen, Copenhagen, Denmark; University of New South Wales, Sydney, Australia; Department of Rheumatology, Pitié-Salpêtrière Hospital, APHP, Université Paris 6-UPMC, Paris, France; Sheba Medical Center, Tel Aviv University, Tel Aviv, Israel; Department of Rheumatology, Diakonhjemmet Hospital, Oslo, Norway; Spire Sciences, Boca Raton, Florida, USA; Department of Rheumatology, Slagelse Hospital, Slagelse, Denmark; Division of Rheumatology Research, Swedish Medical Center, University of Washington School of Medicine; and Seattle Rheumatology Associates, Seattle, Washington, USA; Department of Radiology, Charité University Hospital, Berlin, Germany; Institute of Rheumatic and Musculoskeletal Medicine, University of Leeds; National Institute for Health Research (NIHR) Leeds Musculoskeletal Biomedical Research Unit, Leeds, UK; University of California, San Francisco, and Synarc Inc., San Francisco, California, USA. M. Østergaard, MD, PhD, DMSc, Professor of Rheumatology, Copenhagen Center for Arthritis Research, Center for Rheumatology and Spine Diseases, Glostrup Hospital and Department of Clinical Medicine, University of Copenhagen; P. Bird, BMed (Hons), FRACP, PhD, Grad Dip MRI, Senior Lecturer, University of NSW; F. Gandjbakhch, MD, Practicing Rheumatologist, Department of Rheumatology, Pitié-Salpêtrière, APHP, Université Paris 6-UPMC; I. Eshed, MD, Professor of Radiology, Sheba Medical Center, Tel Aviv University; I.K. Haugen, MD, PhD, Postdoctoral Researcher, Department of Rheumatology, Diakonhjemmet Hospital; E.A. Haavardsholm, MD, PhD, Postdoctoral Researcher, Department of Rheumatology, Diakonhjemmet Hospital; S. Lillegraven, MD, PhD, Postdoctoral Researcher, Department of Rheumatology, Diakonhjemmet Hospital, University of Oslo; V. Foltz, MD, Practicing Rheumatologist, 
authors: Pernille
authors: P
authors: Bøyesen
authors: From the Copenhagen Center for Arthritis Research, Center for Rheumatology and Spine Diseases, Glostrup Hospital, Copenhagen, Denmark; Department of Clinical Medicine, University of Copenhagen, Copenhagen, Denmark; University of New South Wales, Sydney, Australia; Department of Rheumatology, Pitié-Salpêtrière Hospital, APHP, Université Paris 6-UPMC, Paris, France; Sheba Medical Center, Tel Aviv University, Tel Aviv, Israel; Department of Rheumatology, Diakonhjemmet Hospital, Oslo, Norway; Spire Sciences, Boca Raton, Florida, USA; Department of Rheumatology, Slagelse Hospital, Slagelse, Denmark; Division of Rheumatology Research, Swedish Medical Center, University of Washington School of Medicine; and Seattle Rheumatology Associates, Seattle, Washington, USA; Department of Radiology, Charité University Hospital, Berlin, Germany; Institute of Rheumatic and Musculoskeletal Medicine, University of Leeds; National Institute for Health Research (NIHR) Leeds Musculoskeletal Biomedical Research Unit, Leeds, UK; University of California, San Francisco, and Synarc Inc., San Francisco, California, USA. M. Østergaard, MD, PhD, DMSc, Professor of Rheumatology, Copenhagen Center for Arthritis Research, Center for Rheumatology and Spine Diseases, Glostrup Hospital and Department of Clinical Medicine, University of Copenhagen; P. Bird, BMed (Hons), FRACP, PhD, Grad Dip MRI, Senior Lecturer, University of NSW; F. Gandjbakhch, MD, Practicing Rheumatologist, Department of Rheumatology, Pitié-Salpêtrière, APHP, Université Paris 6-UPMC; I. Eshed, MD, Professor of Radiology, Sheba Medical Center, Tel Aviv University; I.K. Haugen, MD, PhD, Postdoctoral Researcher, Department of Rheumatology, Diakonhjemmet Hospital; E.A. Haavardsholm, MD, PhD, Postdoctoral Researcher, Department of Rheumatology, Diakonhjemmet Hospital; S. Lillegraven, MD, PhD, Postdoctoral Researcher, Department of Rheumatology, Diakonhjemmet Hospital, University of Oslo; V. Foltz, MD, Practicing Rheumatologist, 
authors: Philip J
authors: PJ
authors: Mease
authors: From the Copenhagen Center for Arthritis Research, Center for Rheumatology and Spine Diseases, Glostrup Hospital, Copenhagen, Denmark; Department of Clinical Medicine, University of Copenhagen, Copenhagen, Denmark; University of New South Wales, Sydney, Australia; Department of Rheumatology, Pitié-Salpêtrière Hospital, APHP, Université Paris 6-UPMC, Paris, France; Sheba Medical Center, Tel Aviv University, Tel Aviv, Israel; Department of Rheumatology, Diakonhjemmet Hospital, Oslo, Norway; Spire Sciences, Boca Raton, Florida, USA; Department of Rheumatology, Slagelse Hospital, Slagelse, Denmark; Division of Rheumatology Research, Swedish Medical Center, University of Washington School of Medicine; and Seattle Rheumatology Associates, Seattle, Washington, USA; Department of Radiology, Charité University Hospital, Berlin, Germany; Institute of Rheumatic and Musculoskeletal Medicine, University of Leeds; National Institute for Health Research (NIHR) Leeds Musculoskeletal Biomedical Research Unit, Leeds, UK; University of California, San Francisco, and Synarc Inc., San Francisco, California, USA. M. Østergaard, MD, PhD, DMSc, Professor of Rheumatology, Copenhagen Center for Arthritis Research, Center for Rheumatology and Spine Diseases, Glostrup Hospital and Department of Clinical Medicine, University of Copenhagen; P. Bird, BMed (Hons), FRACP, PhD, Grad Dip MRI, Senior Lecturer, University of NSW; F. Gandjbakhch, MD, Practicing Rheumatologist, Department of Rheumatology, Pitié-Salpêtrière, APHP, Université Paris 6-UPMC; I. Eshed, MD, Professor of Radiology, Sheba Medical Center, Tel Aviv University; I.K. Haugen, MD, PhD, Postdoctoral Researcher, Department of Rheumatology, Diakonhjemmet Hospital; E.A. Haavardsholm, MD, PhD, Postdoctoral Researcher, Department of Rheumatology, Diakonhjemmet Hospital; S. Lillegraven, MD, PhD, Postdoctoral Researcher, Department of Rheumatology, Diakonhjemmet Hospital, University of Oslo; V. Foltz, MD, Practicing Rheumatologist, 
authors: Kay-Geert
authors: KG
authors: Hermann
authors: From the Copenhagen Center for Arthritis Research, Center for Rheumatology and Spine Diseases, Glostrup Hospital, Copenhagen, Denmark; Department of Clinical Medicine, University of Copenhagen, Copenhagen, Denmark; University of New South Wales, Sydney, Australia; Department of Rheumatology, Pitié-Salpêtrière Hospital, APHP, Université Paris 6-UPMC, Paris, France; Sheba Medical Center, Tel Aviv University, Tel Aviv, Israel; Department of Rheumatology, Diakonhjemmet Hospital, Oslo, Norway; Spire Sciences, Boca Raton, Florida, USA; Department of Rheumatology, Slagelse Hospital, Slagelse, Denmark; Division of Rheumatology Research, Swedish Medical Center, University of Washington School of Medicine; and Seattle Rheumatology Associates, Seattle, Washington, USA; Department of Radiology, Charité University Hospital, Berlin, Germany; Institute of Rheumatic and Musculoskeletal Medicine, University of Leeds; National Institute for Health Research (NIHR) Leeds Musculoskeletal Biomedical Research Unit, Leeds, UK; University of California, San Francisco, and Synarc Inc., San Francisco, California, USA. M. Østergaard, MD, PhD, DMSc, Professor of Rheumatology, Copenhagen Center for Arthritis Research, Center for Rheumatology and Spine Diseases, Glostrup Hospital and Department of Clinical Medicine, University of Copenhagen; P. Bird, BMed (Hons), FRACP, PhD, Grad Dip MRI, Senior Lecturer, University of NSW; F. Gandjbakhch, MD, Practicing Rheumatologist, Department of Rheumatology, Pitié-Salpêtrière, APHP, Université Paris 6-UPMC; I. Eshed, MD, Professor of Radiology, Sheba Medical Center, Tel Aviv University; I.K. Haugen, MD, PhD, Postdoctoral Researcher, Department of Rheumatology, Diakonhjemmet Hospital; E.A. Haavardsholm, MD, PhD, Postdoctoral Researcher, Department of Rheumatology, Diakonhjemmet Hospital; S. Lillegraven, MD, PhD, Postdoctoral Researcher, Department of Rheumatology, Diakonhjemmet Hospital, University of Oslo; V. Foltz, MD, Practicing Rheumatologist, 
authors: Paul
authors: P
authors: Emery
authors: From the Copenhagen Center for Arthritis Research, Center for Rheumatology and Spine Diseases, Glostrup Hospital, Copenhagen, Denmark; Department of Clinical Medicine, University of Copenhagen, Copenhagen, Denmark; University of New South Wales, Sydney, Australia; Department of Rheumatology, Pitié-Salpêtrière Hospital, APHP, Université Paris 6-UPMC, Paris, France; Sheba Medical Center, Tel Aviv University, Tel Aviv, Israel; Department of Rheumatology, Diakonhjemmet Hospital, Oslo, Norway; Spire Sciences, Boca Raton, Florida, USA; Department of Rheumatology, Slagelse Hospital, Slagelse, Denmark; Division of Rheumatology Research, Swedish Medical Center, University of Washington School of Medicine; and Seattle Rheumatology Associates, Seattle, Washington, USA; Department of Radiology, Charité University Hospital, Berlin, Germany; Institute of Rheumatic and Musculoskeletal Medicine, University of Leeds; National Institute for Health Research (NIHR) Leeds Musculoskeletal Biomedical Research Unit, Leeds, UK; University of California, San Francisco, and Synarc Inc., San Francisco, California, USA. M. Østergaard, MD, PhD, DMSc, Professor of Rheumatology, Copenhagen Center for Arthritis Research, Center for Rheumatology and Spine Diseases, Glostrup Hospital and Department of Clinical Medicine, University of Copenhagen; P. Bird, BMed (Hons), FRACP, PhD, Grad Dip MRI, Senior Lecturer, University of NSW; F. Gandjbakhch, MD, Practicing Rheumatologist, Department of Rheumatology, Pitié-Salpêtrière, APHP, Université Paris 6-UPMC; I. Eshed, MD, Professor of Radiology, Sheba Medical Center, Tel Aviv University; I.K. Haugen, MD, PhD, Postdoctoral Researcher, Department of Rheumatology, Diakonhjemmet Hospital; E.A. Haavardsholm, MD, PhD, Postdoctoral Researcher, Department of Rheumatology, Diakonhjemmet Hospital; S. Lillegraven, MD, PhD, Postdoctoral Researcher, Department of Rheumatology, Diakonhjemmet Hospital, University of Oslo; V. Foltz, MD, Practicing Rheumatologist, 
authors: Harry K
authors: HK
authors: Genant
authors: From the Copenhagen Center for Arthritis Research, Center for Rheumatology and Spine Diseases, Glostrup Hospital, Copenhagen, Denmark; Department of Clinical Medicine, University of Copenhagen, Copenhagen, Denmark; University of New South Wales, Sydney, Australia; Department of Rheumatology, Pitié-Salpêtrière Hospital, APHP, Université Paris 6-UPMC, Paris, France; Sheba Medical Center, Tel Aviv University, Tel Aviv, Israel; Department of Rheumatology, Diakonhjemmet Hospital, Oslo, Norway; Spire Sciences, Boca Raton, Florida, USA; Department of Rheumatology, Slagelse Hospital, Slagelse, Denmark; Division of Rheumatology Research, Swedish Medical Center, University of Washington School of Medicine; and Seattle Rheumatology Associates, Seattle, Washington, USA; Department of Radiology, Charité University Hospital, Berlin, Germany; Institute of Rheumatic and Musculoskeletal Medicine, University of Leeds; National Institute for Health Research (NIHR) Leeds Musculoskeletal Biomedical Research Unit, Leeds, UK; University of California, San Francisco, and Synarc Inc., San Francisco, California, USA. M. Østergaard, MD, PhD, DMSc, Professor of Rheumatology, Copenhagen Center for Arthritis Research, Center for Rheumatology and Spine Diseases, Glostrup Hospital and Department of Clinical Medicine, University of Copenhagen; P. Bird, BMed (Hons), FRACP, PhD, Grad Dip MRI, Senior Lecturer, University of NSW; F. Gandjbakhch, MD, Practicing Rheumatologist, Department of Rheumatology, Pitié-Salpêtrière, APHP, Université Paris 6-UPMC; I. Eshed, MD, Professor of Radiology, Sheba Medical Center, Tel Aviv University; I.K. Haugen, MD, PhD, Postdoctoral Researcher, Department of Rheumatology, Diakonhjemmet Hospital; E.A. Haavardsholm, MD, PhD, Postdoctoral Researcher, Department of Rheumatology, Diakonhjemmet Hospital; S. Lillegraven, MD, PhD, Postdoctoral Researcher, Department of Rheumatology, Diakonhjemmet Hospital, University of Oslo; V. Foltz, MD, Practicing Rheumatologist, 
authors: Philip G
authors: PG
authors: Conaghan
mesh_terms: D000328:Adult; D000368:Aged; D015535:Arthritis, Psoriatic / Q000175:diagnosis* / Q000628:therapy; D001172:Arthritis, Rheumatoid / Q000175:diagnosis* / Q000628:therapy; D003245:Consensus Statements as Topic; D005260:Female; D006801:Humans; D008279:Magnetic Resonance Imaging / Q000379:methods* / Q000592:standards; D008297:Male; D008875:Middle Aged; D010003:Osteoarthritis / Q000175:diagnosis* / Q000628:therapy; D017063:Outcome Assessment, Health Care; D017410:Practice Guidelines as Topic; D036301:Qualitative Research; D015203:Reproducibility of Results; D012720:Severity of Illness Index
keywords: JOINT SPACE NARROWING; MAGNETIC RESONANCE IMAGING; OMERACT; OSTEOARTHRITIS; PSORIATIC ARTHRITIS; RHEUMATOID ARTHRITIS