Radiographic Progression in Axial Spondyloarthritis

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Magnetic resonance imaging (MRI) of the sacroiliac joints (same patient as depicted in Figure 1) demonstrates bilateral irregularity of the joint margins, and subchondral bone marrow edema appearing as a hypointense signal on T1-weighted (T1w) sequence (A) and as a hyperintense signal on short tau inversion recovery (STIR) sequence (B), fulfilling the Assessment of SpondyloArthritis Society criteria for positive MRI for sacroiliitis. An area of subchondral sclerosis with hypointense signal on both sequences (arrow), and an active erosion with hypointense signal on T1w sequence and hyperintense on STIR sequence (arrowhead), are visible in the left ilium.
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17 April 2018
The Role of Imaging in Diagnosing Axial Spondyloarthritis
Nikita Khmelinskii
1 more and 
Xenofon Baraliakos

Imaging has a central role in the diagnosis, management, and follow-up of patients with axial spondyloarthritis (axSpA). For the early diagnosis of axSpA, magnetic resonance imaging is of utmost relevance. While no novel imaging techniques were developed during the past decade, improvements to the existing modalities have been introduced. This report provides an overview of the applications and limitations of the existing imaging modalities.

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