The usefulness of computer-aided joint space analysis in the assessment of rheumatoid arthritis - 16/07/13
, Diane M. Renz b, Andreas Hansch d, Franz Kainberger c, Gabriele Lehmann a, Ansgar Malich e, Gunter Wolf a, Joachim Böttcher fBienvenue sur EM-consulte, la référence des professionnels de santé.
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| pages | 6 |
| Iconographies | 2 |
| Vidéos | 0 |
| Autres | 0 |
Abstract |
Objective |
Computer-aided joint space analysis (CAJSA) is a newly developed technique for the measurement of radiogeometrically detectable joint space widths of the metacarpal-phalangeal (JSD-MCP) and proximal-interphalangeal articulations (JSD-PIP). The aim of this study was to verify the sensitivity and specificity of these CAJSA measurements in the assessment of established RA.
Methods |
Four hundred and fifty-eight participants (248 healthy subjects, 210 RA patients) underwent computerized semi-automated measurements of the JSD-MCP and JSD-PIP articulations (CAJSA, Radiogrammetry Kit, Version 1.3.6) based on digitally performed radiographs. The Sharp joint space narrowing score was also performed to determine RA-related joint space narrowing.
Results |
The significant severity-dependent reduction for JSD-MCP was –44.0% and for JSD-PIP, –25.94% between Sharp scores 0 and 3. The sensitivity and specificity of JSD-MCP (total) was 88.1% versus 77.8%, respectively (AUC=0.920; P<0.001). Furthermore, JSD-PIP (total) revealed a lower sensitivity and specificity with 61.4% and 88.7% (AUC=0.878; P<0.001).
Conclusion |
The CAJSA method presented a reliable assessment of disease-related joint space narrowing in patients suffering from RA with excellent sensitivity and specificity. By providing quantitative data, other scoring methods could be significantly improved, and thereby the accuracy of the diagnosis and a better therapeutic evaluation could be achieved.
Le texte complet de cet article est disponible en PDF.Keywords : Computer-aided diagnosis, Computer-aided joint space analysis, Joint space width, Finger, Rheumatoid arthritis, Sharp score
Abbreviations : AUC, CAD, CAJSA, CV, JSD, JSD-MCP, JSD-PIP, MCP, PIP, RA, SD
Plan
Vol 80 - N° 4
P. 380-385 - juillet 2013 Retour au numéro
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