Spondyloarthritis & psoriatic arthritis

Diagnostic accuracy in axial spondyloarthritis: a systematic evaluation of the role of clinical information in the interpretation of sacroiliac joint imaging

RMD OpenPublished Diagnostic accuracy study

Authors' conclusion

The precision, specificity and diagnostic confidence of radiologic evaluation increased when CI was provided.

Study context

Population
Patients referred for suspected axial spondyloarthritis (axSpA) with complete sacroiliac joints (SIJ) imaging sets (radiographs and MRI); clinical diagnosis as reference standard61 diagnosed with axSpA (56%)
Participants
109 patients
Comparison
Imaging interpretation without vs with clinical information
Outcome
Precision: compatibility of imaging findings with a diagnosis of axSpA, before and after provision of CI
Methodological detailsfour consecutive reading campaigns, three independent radiologists
  • Four consecutive reading campaigns
  • Three independent radiologists

Performance

As reported in the abstract

Precision

Radiographs with CI vs Radiographs without CI: P = 0.008 · Radiographs+MRI with CI vs Radiographs+MRI without CI: P = 1.0

Further findings

Sensitivity and specificity of radiologic findings

Sensitivity

Specificity

OutcomeRadiographs without CIRadiographs with CIRadiographs+MRI without CIRadiographs+MRI with CI
Radiologists' diagnostic confidence (0-10)5.2 ± 1.96.0 ± 1.76.7 ± 1.67.2 ± 1.6

Original publication

Diagnostic accuracy in axial spondyloarthritis: a systematic evaluation of the role of clinical information in the interpretation of sacroiliac joint imaging. RMD Open. Published 4 April 2024. doi:10.1136/rmdopen-2023-004044

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