What are MRI findings in SpA?

Early detection, Axial SpA ASAS criteria include inflammation in SI joints seen on MRI, It can produce excellent evidence of sacroilitis and enthesitis. T2 weighted fat suppressed fast spin-echo and short Tao inversion recovery (STIR) sequences. Assessment of bone marrow edema (BMO) represents a sign of inflammation. Positive MRI put by ASAS/OMERACT MRI working group (active inflammation lesion of SI, BMO/osteitis clear located in typical anatomical sites (subchondral/periarticular), solitary BMO there should be 2 consecutive slices, if more BMO lesions on one slice, if we see inflammation it is sufficient, presence of inflammation alone is not enough