Definitions and reliability assessment of elementary ultrasound lesions in giant cell arteritis: a study from the OMERACT Large Vessel Vasculitis Ultrasound Working Group

• DOI: 10.1136/rmdopen-2017-000598
• Publication Date: 2018-05-18T06:30:09Z
• Authors: Stavros Chrysidis; Christina Duftner; Christian Dejaco; Valentin S Schäfer; Sofia Ramiro; Greta Carrara; Carlo Alberto Scirè; Alojzija Hocevar; Andreas P Diamant...; Annamaria Iagnocco; Chetan Mukhtyar; Cristina Ponte; Esperanza Naredo; Eugenio De Miguel; George A Bruyn; Kenneth J Warrington; Lene Terslev; Marcin Milchert; Maria Antonietta ...; Mattew J Koster; Naina Rastalsky; Petra Hanova; Pierluigi Macchioni; Tanaz A Kermani; Tove Lorenzen; Uffe Møller Døhn; Ulrich Fredberg; Wolfgang Hartung; Bhaskar Dasgupta; Wolfgang A Schmidt
• Keywords: Arteritis

To define the elementary ultrasound (US) lesions in giant cell arteritis (GCA) and to evaluate reliability of assessment US according these definitions a web-based exercise.Potential normal abnormal findings temporal extracranial large arteries were retrieved by systematic literature review. As subsequent step, structured Delphi exercise was conducted involving an expert panel Outcome Measures Rheumatology (OMERACT) Large Vessel Vasculitis Group agree appearance key vasculitis arteries. The on blood vessels tested 150 still images videos exercise.Twenty-four experts participated both rounds. From originally 25 statements, nine obtained for appearance, arteriosclerosis cranial vessels. 'halo' 'compression' signs GCA. axillary arteries, sign excellent with inter-rater agreements 91-99% mean kappa values 0.83-0.98 intra-rater reliabilities all experts.The are regarded as most important abnormalities agreement new OMERACT GCA excellent.