RT Journal Article SR Electronic T1 OMERACT Definitions for Ultrasonographic Pathology and Elementary Lesions Of Rheumatic Disorders Fifteen Years On JF The Journal of Rheumatology JO J Rheumatol FD The Journal of Rheumatology SP jrheum.181095 DO 10.3899/jrheum.181095 A1 George A. Bruyn A1 Annamaria Iagnocco A1 Esperanza Naredo A1 Peter V. Balint A1 Marwin Gutierrez A1 Hilde B. Hammer A1 Paz Collado A1 Georgios Filippou A1 Wolfgang A. Schmidt A1 Sandrine Jousse-Joulin A1 Peter Mandl A1 Philip Conaghan A1 Richard J. Wakefield A1 Helen I. Keen A1 Lene Terslev A1 Maria Antonietta D’Agostino YR 2019 UL http://www.jrheum.org/content/early/2019/01/23/jrheum.181095.abstract AB Objective The Outcome Measures in Rheumatology (OMERACT) ultrasound (US) working group (WG) operates research activities for the validation of US as an outcome measurement instrument according to the Filter 2.0 framework Methods From the onset of the WG research in 2005 through now, original publications on definitions and scoring systems for pathophysiological manifestations and elementary lesions of various rheumatic disorders were reviewed Results Definitions and scoring systems according to new terminology are provided Conclusion We have redefined OMERACT definitions of US pathology and elementary lesions as well as scoring systems which are now proposed for OMERACT approval for application in clinical trials