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Adelsmayr G, Haidmayer A, Spreizer C, et al. The value of MRI compared to conventional radiography in analysing morphologic changes in the spine in axial spondyloarthritis. Insights Imaging. 2021;12(1):183doi: 10.1186/s13244-021-01127-x.
Adelsmayr, G., Haidmayer, A., Spreizer, C., Janisch, M., Quehenberger, F., Klocker, E., Graninger, W., Fuchsjäger, M., & Hermann, J. (2021). The value of MRI compared to conventional radiography in analysing morphologic changes in the spine in axial spondyloarthritis. Insights into imaging, 12(1), 183. https://doi.org/10.1186/s13244-021-01127-x
Adelsmayr, Gabriel, et al. "The value of MRI compared to conventional radiography in analysing morphologic changes in the spine in axial spondyloarthritis." Insights into imaging vol. 12,1 (2021): 183. doi: https://doi.org/10.1186/s13244-021-01127-x
Adelsmayr G, Haidmayer A, Spreizer C, Janisch M, Quehenberger F, Klocker E, Graninger W, Fuchsjäger M, Hermann J. The value of MRI compared to conventional radiography in analysing morphologic changes in the spine in axial spondyloarthritis. Insights Imaging. 2021 Dec 11;12(1):183. doi: 10.1186/s13244-021-01127-x. PMID: 34894305.
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Insights Imaging. 2021 Dec 11;12(1):183. doi: 10.1186/s13244-021-01127-x.

The value of MRI compared to conventional radiography in analysing morphologic changes in the spine in axial spondyloarthritis.

Insights into imaging

Gabriel Adelsmayr, Andreas Haidmayer, Christopher Spreizer, Michael Janisch, Franz Quehenberger, Eva Klocker, Winfried Graninger, Michael Fuchsjäger, Josef Hermann

Affiliations

  1. Division of General Radiology, Department of Radiology, Medical University of Graz, Auenbruggerplatz 9, 8036, Graz, Austria.
  2. Division of Rheumatology and Immunology, Department of Internal Medicine, Medical University of Graz, Auenbruggerplatz 15, 8036, Graz, Austria.
  3. Department of Internal Medicine, Hospital Southern Styria, Dr.-Schwaiger-Straße 1, 8490, Bad Radkersburg, Austria.
  4. Southeastern CT-Institute, Gleichenberger Str. 35, 8330, Feldbach, Austria.
  5. Institute for Medical Informatics, Statistics and Documentation, Medical University of Graz, Auenbruggerplatz 2/9/V, 8036, Graz, Austria.
  6. Division of Oncology, Department of Internal Medicine, Medical University of Graz, Auenbruggerplatz 15, 8036, Graz, Austria.
  7. Division of General Radiology, Department of Radiology, Medical University of Graz, Auenbruggerplatz 9, 8036, Graz, Austria. [email protected].

PMID: 34894305 DOI: 10.1186/s13244-021-01127-x

Abstract

BACKGROUND: Imaging of morphologic changes in the vertebral spine in axial spondyloarthritis (SpA) is routinely performed with conventional radiography limited by superposition in the thoracic segments and radiation exposure. The objective was to assess the reliability of MRI compared to conventional radiography in depicting morphologic vertebral lesions in patients with axial SpA. Forty patients diagnosed with axial SpA were included in this cross-sectional study. Patients underwent MRI of the whole spine with T1-weighted and TIRM sequences in the sagittal plane and conventional radiography of the cervical and lumbar spine in lateral projections. Morphologic changes (syndesmophytes and erosions) in the anterior vertebral endplates on MRI and conventional radiography were independently evaluated by two radiologists. Inter-modality and interobserver agreement were calculated using Cohen's Kappa.

RESULTS: Inter-modality agreement was low for cervical and lumbar syndesmophytes and erosions (κ ≤ 0.2 ± 0.07-0.1). Interobserver agreement on conventional radiography was highest for cervical and lumbar anterior syndesmophytes/bridging (κ = 0.92 ± 0.02-0.03). Syndesmophytes in thoracic anterior vertebral units were the most frequent MRI finding with a high interobserver agreement (κ = 0.83 ± 0.05).

CONCLUSIONS: In imaging morphologic changes in the spine in patients with axial SpA, MRI was shown to be not an equivalent substitute but a complementary imaging modality to conventional radiography. Conventional radiography seems superior to depict morphologic cervical and lumbar vertebral changes compared to MRI, whereas MRI may visualise morphologic lesions in the thoracic spine.

© 2021. The Author(s).

Keywords: Magnetic resonance imaging; Observer variation; Radiography; Spondyloarthritis

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