Development and Validation of an OMERACT MRI Whole-Body Score for Inflammation in Peripheral Joints and Entheses in Inflammatory Arthritis (MRI-WIPE).

Krabbe, Simon; Eshed, Iris; Gandjbakhch, Frédérique; Pedersen, Susanne J; Bird, Paul; Mathew, Ashish J; Lambert, Robert G; Maksymowych, Walter P et al. · J Rheumatol · 2019

other · Level V

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Abstract

To develop a whole-body magnetic resonance imaging (MRI) scoring system for peripheral arthritis and enthesitis. After consensus on definitions/locations of MRI pathologies, 4 multireader exercises were performed. Eighty-three joints were scored 0-3 separately for synovitis and osteitis, and 33 entheses 0-3 separately for soft tissue inflammation and osteitis. In the last exercise, reliability was moderate-good for musculoskeletal radiologists and rheumatologists with previously demonstrated good scoring proficiency. Median pairwise single-measure/average-measure ICC were 0.67/0.80 for status scores and 0.69/0.82 for change scores; κ ranged 0.35-0.77. Whole-body MRI scoring of peripheral arthritis and enthesitis is reliable, which encourages further testing and refinement in clinical trials.

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