• A 35-year-old patient

  • Patient with chronic back pain

  • Psoriatic arthritis

Fig. 1
figure 1

Axial TSE T2-weighted image with fat saturation (a), axial SE T1-weighted images with fat saturation following the administration of contrast medium (b, c). Different planes. Anterior capsulitis of the right sacroiliac joint (a). Subchondral osteitis on the right sacral side and left iliac side. Multiple foci of contrast enhancement at the sites of attachment of ligaments, indicating enthesitis