title: [MRI of axial spondyloarthritis: diagnostic role and pitfalls].
abstract: MRI has become a major tool for the diagnosis of axial spondyloarthritis and provides objective signs based on which therapy can be initiated. In clinical practice, ASAS classification criteria are often applied for the diagnosis of spondyloarthritis at a pre-radiographic stage. However, MRI signs of spondyloarthritis as stated in ASAS criteria lack specificity, and can be encountered in a wide array of diagnoses, in particular degenerative and mechanical conditions. In this article, we will review the role of MRI in the diagnosis and classification of spondyloarthritis, general technical considerations, the elementary MRI signs of axial spondyloarthritis, as well as diagnostic pitfalls. We also provide a practical approach on how to avoid overdiagnosis of spondyloarthritis and to improve the diagnostic value of MRI.
authors.forename: Patrick
authors.initials: P
authors.lastname: Omoumi
authors.forename: Ahmed
authors.initials: A
authors.lastname: Larbi
authors.forename: Pascal
authors.initials: P
authors.lastname: Zufferey
authors.forename: Alexander
authors.initials: A
authors.lastname: So
authors.forename: Fabio
authors.initials: F
authors.lastname: Becce
authors.forename: Bruno
authors.initials: B
authors.lastname: Vande Berg
authors.forename: Jacques
authors.initials: J
authors.lastname: Malghem
mesh_terms: D003937:Diagnosis, Differential; D006801:Humans; D008279:Magnetic Resonance Imaging; D000069342:Medical Overuse / Q000517:prevention & control; D011237:Predictive Value of Tests; D011379:Prognosis; D012680:Sensitivity and Specificity; D012720:Severity of Illness Index; D013167:Spondylitis, Ankylosing / Q000145:classification* / Q000175:diagnosis*