Fig. 1From: Monitoring the efficacy of tumor necrosis factor alpha antagonists in the treatment of Ankylosing spondylarthritis: a pilot study based on MR relaxometry techniqueA male, 32 years old, HLA-B27: + , ASDAS-CRP:1.9, belongs to the moderate activity group. a The coronal plane of PDWI shows high signal intensity of bone marrow under right sacroiliac articular surface. b T1-mapping pseudo-color diagram demonstrates the T1-mapping values of regions of interest is 519.27 msBack to article page