Juvenile idiopathic arthritis other imaging findings
Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1] ;Associate Editor(s)-in-Chief: Dheeraj Makkar, M.D.[2]
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Other Imaging Modalities
In addition to radiography, ultrasonography, computed tomography, and magnetic resonance imaging, other imaging modalities may be used selectively in juvenile idiopathic arthritis (JIA) to address specific diagnostic or clinical questions.
Nuclear Medicine Imaging
- Bone scintigraphy may demonstrate increased uptake in areas of active inflammation
- Useful for detecting multifocal or clinically occult joint involvement
- Limited specificity and reduced use due to availability of MRI
Positron Emission Tomography (PET)
- Rarely used in routine evaluation of JIA
- May demonstrate increased metabolic activity in inflamed joints or systemic inflammatory states
- Primarily reserved for research settings or evaluation of alternative diagnoses such as malignancy or infection
Dual-Energy X-ray Absorptiometry (DEXA)
- Assessment of bone mineral density in patients with long-standing disease
- Useful for monitoring osteoporosis related to chronic inflammation or glucocorticoid therapy
Overall, these imaging modalities play a supplementary role in JIA and are used selectively based on clinical context. MRI and ultrasonography remain the preferred tools for assessment of inflammatory activity in most patients.
References
- ↑ Sandborg CI, Schulert GS, Kimura Y. Juvenile Idiopathic Arthritis. N Engl J Med. 2025;392:XXX–XXX. doi:10.1056/NEJMra2402073.
- ↑ Malattia C, Damasio MB, Magnaguagno F, et al. Magnetic resonance imaging, ultrasonography, and conventional radiography in the assessment of juvenile idiopathic arthritis. Arthritis Rheum. 2011;63:181–190.
- ↑ Cimaz R, Barbieri F. Imaging in juvenile idiopathic arthritis. Best Pract Res Clin Rheumatol. 2018;32:641–655.
- ↑ Collado P, Jousse-Joulin S, Alcalde M, et al. Ultrasound in the diagnosis and follow-up of juvenile idiopathic arthritis. Rheumatology (Oxford). 2012;51:7–12.
- ↑ Petty RE, Southwood TR, Manners P, et al. International League of Associations for Rheumatology classification of juvenile idiopathic arthritis: second revision. J Rheumatol. 2004;31:390–392.