P003 A dedicated short MRI protocol for assessing synovitis: evaluating patient acceptability and rheumatologist perceptions
Authors: Thorley Natasha , Dwyer-Hemmings Louis , Singh Saurabh , Bray Timothy J P , Bida Lisa , Hall-Craggs Margaret A 
Published: April 2023

Abstract

Background/Aims
Magnetic resonance imaging (MRI) plays an increasingly important role in diagnosing and monitoring patients with inflammatory arthropathies due to its ability to detect early, sometimes subclinical, inflammatory changes, including synovitis. It is a sensitive, accurate and relatively non-operator dependent modality. However, it is typically perceived as expensive and time-consuming, and is used infrequently for evaluation of synovitis in clinical care. MRI is thought to be generally well-tolerated by patients, however, there is a paucity of research on patient experience of MRI, particularly in rheumatology where patients may have complex and/or chronic pain. To improve the acceptability, cost-effectiveness and overall utility of MRI for clinicians and patients, we introduced a short synovitis MRI protocol (MRI-SSP) for rapid assessment of synovitis in the hands and feet. Here, we evaluated the acceptability of MRI-SSP to patients and the perceived utility of the protocol for rheumatologists.

Methods
Different structured questionnaires were designed for patients and rheumatologists which contained qualitative (free-text) and quantitative (five-point Likert-scale) questions. All patients undergoing MRI-SSP of the hand or wrist at University College London Hospital (UCLH) between 01/02/22 to 01/07/22 were prospectively invited to participate and completed the questionnaire via telephone within four weeks of their scan. All rheumatologists at our centre were invited to respond to an online questionnaire. Likert scores were analysed quantitatively and thematic analysis was performed on free-text comments.

Results
Patient experience - 30 patients agreed to participate (mean age 48 years, range 21-74; 87% female). Average patient Numerical Pain Rating Scale score was 5.1/10 (range 1-10). We found that: 90% found the scan length acceptable; 90% had no or mild side-effects from intravenous contrast; 40% had no pain during the scan; 57% had no anxiety during the scan; 97% found the scan acceptable overall; 97% would be happy to have the scan again; scan length and comfort were important for patients; good radiographer communication helped to alleviate patient anxiety. Rheumatologist perception - 10 rheumatologists responded. Of these, 40% perform ultrasound to assess for synovitis in clinic. We found that: 90% strongly agreed that the MRI-SSP report was helpful in answering clinical questions; 90% strongly agreed that the MRI-SSP influenced clinical decision making; there was a mixed response regarding which modality rheumatologists preferred for assessing synovitis (40% no preference, 30% MRI, 30% ultrasound) and this was independent of which rheumatologists performed ultrasound in clinic.

Conclusion
Overall, patients found MRI-SSP to be an acceptable investigation, and rheumatologists felt it helpful in clinical decision-making. Important factors affecting patient acceptability were scan length and comfort. In general, our results suggest that dedicated short MRI scanning protocols have the potential to improve the acceptability and accessibility of MRI for rheumatology patients.
Disclosure
N. Thorley: None. L. Dwyer-Hemmings: None. S. Singh: None. T.J.P. Bray: None. L. Bida: None. M.A. Hall-Craggs: None.