TY - JOUR T1 - A multireader reliability study comparing conventional high-field magnetic resonance imaging with extremity low-field MRI in rheumatoid arthritis. JF - The Journal of Rheumatology JO - J Rheumatol SP - 854 LP - 856 VL - 34 IS - 4 AU - Paul Bird AU - Bo Ejbjerg AU - Marissa Lassere AU - Mikkel Østergaard AU - Fiona McQueen AU - Charles Peterfy AU - Espen Haavardsholm AU - Philip O'Connor AU - Harry Genant AU - John Edmonds AU - Paul Emery AU - Philip G Conaghan Y1 - 2007/04/01 UR - http://www.jrheum.org/content/34/4/854.abstract N2 - The use of extremity low-field magnetic resonance imaging (E-MRI) is increasing, but relatively few data exist on its reproducibility and accuracy in comparison with high-field MRI, especially for multiple readers. The aim of this multireader exercise of rheumatoid arthritis wrist and metacarpophalangeal joints was to assess the intermachine (high vs low-field) agreement and to assess the interreader agreement on high and low-field images. Study findings suggested that E-MRI performs similarly to conventional high-field MRI regarding assessment of bone erosions. However, for synovitis and bone edema, considerable intermachine and interreader variability was found. Further studies are needed before recommendations on multireader E-MRI assessment of these pathologies can be given. ER -