Hip and Pelvis Region MRI Reference Image Atlas for Scoring Inflammation in Peripheral Joints and Entheses According to the OMERACT-MRI WIPE Scoring System in Patients with Spondyloarthritis.

OBJECTIVE:To develop a reference image atlas for scoring the hip/pelvis region according to the OMERACT whole-body MRI scoring system for inflammation in peripheral joints and entheses (MRI-WIPE).METHODS:We collected image examples of each pathology, location and grade, discussed them at web-based, interactive meetings and, finally, selected reference images by consensus.RESULTS:Reference images for each grade and location of osteitis, synovitis and soft tissue inflammation are provided, as are definitions, reader rules and recommended MRI-sequences.CONCLUSION:A reference image atlas was created to guide scoring whole-body MRIs for arthritis and enthesitis in the hip/pelvis region in spondyloarthritis/psoriatic arthritis clinical trials and cohorts.