Ankylosing Spondylitis: Diagnostic Tests

Mandatory medical device diagnostics.

  • Radiographic examination of the spine (pelvis or targeted imaging of the sacroiliac joints) – to examine bony changes in axial spondyloarthritis (axSpA) [gold standard in detecting chronic structural changes in patients with axial spondyloarthritis (axSpA) or suspected axSpA].
  • Magnetic resonance imaging (MRI; computer-assisted cross-sectional imaging (using magnetic fields, that is, without X-rays)) of the spine (spinal MRI) – Indications:
    • Detection of inflammatory changes and fatty degeneration [standard method].
    • Diagnosis or in the course
  • Computed tomography (CT; sectional imaging procedure (X-ray images from different directions with computer-based analysis)) of the spine (spinal CT) – indications:
    • Examination of bony change in axial spondyloarthritis (axSpA).
    • Diagnosis or in the course

Optional medical device diagnostics – depending on the results of the history, physical examination and obligatory laboratory parameters – for differential diagnostic clarification.