Identification of calcium pyrophosphate deposition disease (CPPD) by ultrasound: reliability of the OMERACT definitions in an extended set of joints-an international multiobserver study by the OMERACT Calcium Pyrophosphate Deposition Disease Ultrasound Subtask Force.
Georgios FilippouCarlo Alberto ScirèAntonella AdinolfiNemanja S DamjanovGreta CarraraGeorge A W BruynTomas CazenaveMaria Antonietta D'AgostinoAndrea Delle SedieValentina Di SabatinoMario Enrique Diaz CortesEmilio FilippucciFrederique GandjbakhchMarwin GutierrezDaryl K MaccarterMihaela MicuIngrid Möller PareraGaël MouterdeMohamed Atia MortadaEsperanza NaredoCarlos PinedaFrancesco PortaAnthony M ReginatoIulia SatuluWolfgang A SchmidtTeodora SerbanLene TerslevVioleta VladFlorentin Ananu VrejuPascal ZuffereyPanagiotis BoziosCarmela ToscanoValentina PicernoAnnamaria IagnoccoPublished in: Annals of the rheumatic diseases (2018)
Based on the results of our exercise, the OMERACT US definitions for the identification of CPPD demonstrated to be reliable when applied to the TFC and AC. Other sites reached good kappa values in the web-based exercise but failed to achieve good reproducibility at the patient-based exercise, meaning the scanning method must be further refined.