Fig. 2From: Monitoring the efficacy of tumor necrosis factor alpha antagonists in the treatment of Ankylosing spondylarthritis: a pilot study based on MR relaxometry techniqueA male, 27 years old, HLA-B27: ± , ASDAS-CRP:2.5, belongs to the high disease activity group. a The coronal plane of PDWI shows high signal intensity of bone marrow under left sacroiliac articular surface. b T1-mapping pseudo-color diagram demonstrates the T1-mapping values of regions of interest is 725.77 msBack to article page