Table 1

 The example images requested for the EULAR–OMERACT rheumatoid arthritis MRI reference image atlas and the allocated collection centres

SelectionSynovitisBone oedemaBone erosion
MCP jointWristMCP jointWristMCP jointWrist
*In total, 1002 images were included in the atlas.6–8 The origin of the images was as follows: Copenhagen, 48%; Leeds, 45%; Auckland, 4.4%; Oslo, 2.2%; and Sydney, 0.5%.
MCP, metacarpophalangeal; CMC, carpometacarpal; STIR, short tau inversion recovery.
AreasSecond or thirdDistal radioulnarMetacarpal headRadiusMetacarpal headRadius
RadiocarpalPhalangeal baseScaphoidPhalangeal baseScaphoid
Third metacarpal baseSecond or third metacarpal base
GradesAll (0–3)All (0–3)Grade 0–3 + examples of higher grades
MRI sequences
    For scoringAxial precontrast and postcontrast T1 weightedCoronal T2 weighted fat saturated or STIRCoronal T1 weighted
    AdditionalCoronal precontrast and postcontrast T1 weightedAxial T1 weighted (to confirm cortical break)
Centre allocation (primary/secondary)Leeds/SydneyCopenhagen/SydneyLeeds/SydneyAuckland/CopenhagenLeeds/SydneyCopenhagen/Auckland
Origin of final atlas images*LeedsCopenhagen, OsloLeedsCopenhagen, Leeds, OsloLeeds, SydneyCopenhagen, Auckland