To evaluate the diagnostic potential of SPECT imaging in juvenile idiopathic arthritis (JIA) by comparing brightness scores in affected joints of JIA patients and non-JIA controls.
Approach:
Study Design: A retrospective case-control study involving 29 JIA patients and 55 non-JIA controls, all undergoing 99Tc-MDP SPECT imaging.
Data Analysis: Standardized uptake ratio (SUR) calculated for hip, knee, ankle, and wrist joints; differences assessed using Mann-Whitney U test and ROC curves.
Key Findings:
JIA patients exhibited significantly higher median brightness scores in all target joints compared to controls, with the most significant differences observed in the bilateral wrists.
ROC analysis indicated limited diagnostic value for the wrist, knee, and hip joints.
Interpretation:
SPECT-based wrist brightness scoring may serve as an objective imaging tool for diagnosing JIA.
Limitations:
Small sample size may limit the generalizability of findings.
The study only included children who had not received prior treatment, which may not reflect the broader JIA population.
Conclusion:
SPECT imaging shows potential as an auxiliary diagnostic tool for JIA.
