- Lambert RGW, Bakker PAC, van der Heijde D, et al. Defining active sacroiliitis on MRI for classification of axial spondyloarthritis: update by the ASAS MRI Working group. Ann Rheum Dis 2016;75:1958–63.
- Hermann K-GA, Baraliakos X, van der Heijde DMFM, et al. Descriptions of spinal MRI lesions and definition of a positive MRI of the spine in axial spondyloarthritis: a consensual approach by the ASAS/OMERACT MRI study Group. Ann Rheum Dis 2012;71:1278–88.
- Rudwaleit M, Jurik AG, Hermann K-GA, et al. Defining active sacroiliitis on magnetic resonance imaging (MRI) for classification of axial spondyloarthritis: a consensual approach by the ASAS/OMERACT MRI group. Ann Rheum Dis 2009;68:1520–7.
ASAS MRI update
Key messages
- ASAS have updated and validated definitions for inflammatory and structural spinal lesions in axSpA.
- The definitions were updated by consensus and validated by a group of experienced readers.
- Lesions with the highest frequency and best reliability were fat and monomorphic inflammatory lesions at the vertebral corner.
