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Current status of MR imaging of juvenile idiopathic arthritis
Clara Malattia1, Mirkamal Tolend2, Marta Mazzoni1
1Clinica Pediatrica e Reumatologia, Istituto Giannina Gaslini, Genoa, Italy; Department of Neurosciences, Rehabilitation, Ophthalmology, Genetic and Maternal Infantile Sciences (DINOGMI), University of Genoa, Italy.
Insights
Juvenile idiopathic arthritis (JIA) diagnosis benefits from MRI, especially for difficult joints and whole-body screening. Research focuses on standardizing MRI protocols and techniques for accurate assessment in growing children.
Area of Science:
- Pediatric Rheumatology
- Medical Imaging
- Orthopedics
Background:
- Juvenile idiopathic arthritis (JIA) is the most prevalent chronic joint disease in children.
- Clinical diagnosis is common, but MRI is crucial for evaluating challenging joints and systemic inflammation.
- Distinguishing pathological from physiological changes in pediatric patients presents unique imaging challenges.
Purpose of the Study:
- To discuss current trends in JIA diagnosis and management.
- To review challenges in detecting pathological changes in pediatric joints using MRI.
- To summarize MRI protocol standardization and scoring systems for JIA joint pathology quantification.
- To outline novel MR imaging techniques for JIA joint evaluation.
Main Methods:
- Review of current literature and trends in JIA diagnosis and management.
- Discussion of challenges specific to pediatric musculoskeletal MRI.
- Summary of efforts in standardizing MRI acquisition protocols and scoring systems.
- Exploration of emerging MR imaging techniques for JIA assessment.
Main Results:
- MRI is vital for assessing difficult-to-evaluate joints (e.g., temporomandibular, sacroiliac) and for whole-body screening in JIA.
- Standardization of MRI protocols and validated scoring systems are essential for reliable cross-sectional and longitudinal assessment.
- Ongoing research aims to optimize MRI as a biomarker and outcome measure in JIA.
Conclusions:
- MRI plays a critical role in the comprehensive evaluation of JIA, complementing clinical assessment.
- Standardization and novel techniques are key to overcoming challenges in pediatric JIA imaging.
- Further research is needed to fully leverage MRI's potential as a robust biomarker for JIA.
Abstract:
Juvenile idiopathic arthritis (JIA) is the most common chronic arthropathy in the pediatric population. Although the diagnosis is essentially clinical for many affected joints, MR imaging has become an important tool for the assessment of joints that are difficult to evaluate clinically, such as temporomandibular and sacroiliac joints, and for screening of inflammatory changes in the entire body by whole body MRI (WBMRI) assessment. The utilization of MR imaging is challenging in the pediatric population given the need for discrimination between pathological and physiological changes in the growing skeleton. Several multicentric multidisciplinary organizations have made major efforts over the past decades to standardize, quantify, and validate scoring systems to measure joint changes both cross-sectionally and longitudinally according to rigorous methodological standards. In this paper, we (1) discuss current trends for the diagnosis and management of JIA, (2) review challenges for detecting real pathological changes in growing joints, (3) summarize the current status of standardization of MRI protocols for data acquisition and the quantification of joint pathology in JIA by means of scoring systems, and (4) outline novel MR imaging techniques for the evaluation of anatomy and function of joints in JIA. Optimizing the role of MRI as a robust biomarker and outcome measure remains a priority of future research in this field.
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