title: MRI in seronegative spondyloarthritis: imaging features and differential diagnosis in the spine and sacroiliac joints.
abstract: OBJECTIVE
  Radiologists should be familiar with MRI findings suggestive of spondyloarthritis and its differential diagnosis. Because most publications describing these features are found in the rheumatologic literature, the purpose of this review is to present these imaging findings of axial spondyloarthritis to radiologists.
  
  
  CONCLUSIONS
  New imaging outcomes have improved the diagnosis and follow-up of spondyloarthritis and the assessment of therapeutic modalities. Diagnostic criteria include MRI of the sacroiliac joint, which facilitates earlier diagnosis.
authors.affiliation: Departamento de Radiologia, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brasil. clacanella@yahoo.com.br
authors.forename: Clarissa
authors.initials: C
authors.lastname: Canella
authors.forename: Bruno
authors.initials: B
authors.lastname: Schau
authors.forename: Elisio
authors.initials: E
authors.lastname: Ribeiro
authors.forename: Bruna
authors.initials: B
authors.lastname: Sbaffi
authors.forename: Edson
authors.initials: E
authors.lastname: Marchiori
mesh_terms: D003937:Diagnosis, Differential; D006801:Humans; D008279:Magnetic Resonance Imaging / Q000379:methods; D012446:Sacroiliac Joint / Q000473:pathology; D013131:Spine / Q000473:pathology; D025241:Spondylarthritis / Q000175:diagnosis*