RT Journal Article SR Electronic T1 Musculoskeletal ultrasound including definitions for ultrasonographic pathology. JF The Journal of Rheumatology JO J Rheumatol FD The Journal of Rheumatology SP 2485 OP 2487 VO 32 IS 12 A1 Richard J Wakefield A1 Peter V Balint A1 Marcin Szkudlarek A1 Emilio Filippucci A1 Marina Backhaus A1 Maria-Antonietta D'Agostino A1 Esperanza Naredo Sanchez A1 Annamaria Iagnocco A1 Wolfgang A Schmidt A1 George A W Bruyn A1 George Bruyn A1 David Kane A1 Philip J O'Connor A1 Bernhard Manger A1 Fred Joshua A1 Juhani Koski A1 Walter Grassi A1 Marissa N D Lassere A1 Nanno Swen A1 Franz Kainberger A1 Andrea Klauser A1 Mikkel Ostergaard A1 Andrew K Brown A1 Klaus P Machold A1 Philip G Conaghan A1 OMERACT 7 Special Interest Group YR 2005 UL http://www.jrheum.org/content/32/12/2485.abstract AB Ultrasound (US) has great potential as an outcome in rheumatoid arthritis trials for detecting bone erosions, synovitis, tendon disease, and enthesopathy. It has a number of distinct advantages over magnetic resonance imaging, including good patient tolerability and ability to scan multiple joints in a short period of time. However, there are scarce data regarding its validity, reproducibility, and responsiveness to change, making interpretation and comparison of studies difficult. In particular, there are limited data describing standardized scanning methodology and standardized definitions of US pathologies. This article presents the first report from the OMERACT ultrasound special interest group, which has compared US against the criteria of the OMERACT filter. Also proposed for the first time are consensus US definitions for common pathological lesions seen in patients with inflammatory arthritis.