Article Text

other Versions

PDF
A modification of the Omeract RA MRI score for erosions for use with an extremity MRI system with reduced field of view
  1. Jane E Freeston (medjef{at}leeds.ac.uk)
  1. University of Leeds, United Kingdom
    1. Ewa Olech
    1. University of Oklahoma, United States
      1. David Yocum
      1. Stanford University, United States
        1. Elizabeth M A Hensor
        1. University of Leeds, United Kingdom
          1. Paul Emery (p.emery{at}leeds.ac.uk)
          1. University of Leeds, United Kingdom
            1. Philip G Conaghan (p.conaghan{at}leeds.ac.uk)
            1. University of Leeds, United Kingdom

              Abstract

              Objectives: To develop and test the reliability of a modified version of the OMERACT RA MRI score (RAMRIS) for erosions using extremity MRI (eMRI) with reduced field of view (RAMRIS-RV).

              Methods: Using a MagneVu 0.2 T machine, the preliminary RAMRIS-RV assessed erosions in MCP joints 2-3, bases of metacarpal (MC) 2-5, and all wrist bones excluding base MC 1, pisiform and trapezium. T1 weighted images of ≥ 500 MCP and wrist bony sites from a mixed severity RA and control cohort were evaluated. An inter-reader reliability study evaluating 300 wrist and 160 MCP bony sites was then performed.

              Results: Mean % exact (and close) agreement results were as follows: MCP proximal sites 83.5 (96.2), MCP distal 54.4 (77.2), bases MC 2-4 85.2 (96.7), carpal bones 79.0 (92.1), distal radius/ulna 66.4 (87.8). The base of MCP 5 was visualised in ≤ 50% cases (13/25) and was removed from the final RAMRIS-RV.

              Conclusions: The RAMRIS-RV is a practical tool that can be used with eMRI with a reduced field of view. This study shows excellent inter-reader reliability for erosion assessment, albeit in a reduced number of bony sites.

              • RAMRIS
              • erosions
              • extremity magnetic resonance imaging
              • rheumatoid arthritis

              Statistics from Altmetric.com

              Request permissions

              If you wish to reuse any or all of this article please use the link below which will take you to the Copyright Clearance Center’s RightsLink service. You will be able to get a quick price and instant permission to reuse the content in many different ways.